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Python Program to Compute a Polynomial Equation given that the Coefficients of the Polynomial are stored in a List

October 16, 2024October 15, 2024 by Vikram Chiluka

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Given Coefficients of the polynomial and x which are stored in the list, the task is to compute the value of the polynomial equation with given x from the given Coefficients in Python.

Examples:

Example1:

Input:

given coefficient list = [7, 1, 3, 2]

Output:

The total value of the given polynomial 7 x^3 +1 x^2 +3 x +2 with the given value of x=5 is 917

Example2:

Input:

 given coefficient list = [3, 9, 1, 2]

Output:

The total value of the given polynomial 3 x^3 +9 x^2 +1 x +2 with the given value of x 6 = 980

Program to Compute a Polynomial Equation given that the Coefficients of the Polynomial are stored in a List

There are several ways to compute the value of the polynomial equation with given x from the given Coefficients in Python some of them are:

Using for and while loop(User Input)
Using for and while loop(Static Input)

Method #1:Using for and while loop(User Input)

Approach:

Import the math module.
Take a empty list.
Loop from 1 to 4 using for loop as there are 4 coefficients terms in the equation.
Scan the coefficient as user input using int(input()) function.
Add this to the list using append() function.
Scan the value of x as user input using int(input()) function.
To compute the value of the polynomial expression for the first three terms, use a for loop and a while loop and store it in a sum variable.
To the total variable, add the fourth term.
The computed value should be printed.
Exit of program.

Below is the implementation:

import math
# Take a empty list.
coefflist = []
# Loop from 1 to 4 using for loop as there are 4 coefficients terms in the equation.
for t in range(4):
    # Scan the coefficient as user input using int(input()) function.
    elemen = int(input('Enter some random coefficient ='))
    # Add this to the list using append() function.
    coefflist.append(elemen)
# Scan the value of x as user input using int(input()) function.
x = int(input('Enter some random value of x ='))
# Taking a variable which stores totalValue and initialize it with 0
totalValue = 0
temp = 3
for k in range(0, 3):
    while(temp > 0):
        totalValue = totalValue+(coefflist[k]*(x**temp))
        # breaking the while looop
        break
    temp = temp-1
# To the total variable, add the fourth term.
totalValue = totalValue+coefflist[3]
print("The total value of the given polynomial " +
      str(coefflist[0])+' x^3 +'+str(coefflist[1])+' x^2 +'+str(coefflist[2])+' x +' +
      str(coefflist[3]), 'with the given value of x=', x, 'is', totalValue)

Output:

Enter some random coefficient =1
Enter some random coefficient =9
Enter some random coefficient =3
Enter some random coefficient =5
Enter some random value of x =8
The total value of the given polynomial 1 x^3 +9 x^2 +3 x +5 with the given value of x= 8 is 1117

Explanation:

The math module has been imported.
The user must enter the polynomial coefficients, which are saved in a list.
In addition, the user must input the value of x.
The for loop, which is used to retrieve the coefficients in the list, changes the value of I from 0 to 2.
The power for the value of x is determined by the value of j, which varies from 3 to 1.
This method is used to compute the values of the first three terms.
The final term is added to the total.
The final calculated value is printed.

Method #2: Using for and while loop(Static Input)

Approach:

Import the math module.
Take in the polynomial equation coefficients as static input in given list.
Give the value of x as static input.
To compute the value of the polynomial expression for the first three terms, use a for loop and a while loop and store it in a sum variable.
To the total variable, add the fourth term.
The computed value should be printed.
Exit of program.

Below is the implementation:

import math
# Take in the polynomial equation coefficients as static input in given list.
coefflist = [7, 1, 3, 2]
# Give the value of x as static input.
x = 5
# Taking a variable which stores totalValue and initialize it with 0
totalValue = 0
temp = 3
for k in range(0, 3):
    while(temp > 0):
        totalValue = totalValue+(coefflist[k]*(x**temp))
        # breaking the while looop
        break
    temp = temp-1
# To the total variable, add the fourth term.
totalValue = totalValue+coefflist[3]
print("The total value of the given polynomial " +
      str(coefflist[0])+' x^3 +'+str(coefflist[1])+' x^2 +'+str(coefflist[2])+' x +' +
      str(coefflist[3]), 'with the given value of x=', x, 'is', totalValue)

Output:

The total value of the given polynomial 7 x^3 +1 x^2 +3 x +2 with the given value of x=5 is 917

Explanation:

The for loop, which is used to retrieve the coefficients in the list, changes the value of I from 0 to 2.
The power for the value of x is determined by the value of j, which varies from 3 to 1.
This method is used to compute the values of the first three terms.
The final term is added to the total.
The final calculated value is printed.

Answer these:

Python program to print polynomial equation?
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Write a python code to generate a polynomial function and then plot the same?
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Related Programs:

Python Program to Find Minimum Number of Steps to Reach M from N

October 16, 2024October 15, 2024 by Vikram Chiluka

Given two numbers m and n the task is to get the lowest number of steps to get from M to N in Python We’ll only use two operations to get from M to N.

Multiply the given number by 2.
Subtract 1 from the given number.

Examples:

Example1:

Input:

Given Number M=10
Given Number N=6

Output:

The result is 2

Example2:

Input:

Given Number M=12
Given Number N=19

Output:

The result is 7

Program to Find Minimum Number of Steps to Reach M from N in Python

Below are the ways to find the minimum number of steps to reach M from N in Python.

Using While loop (Static Input)
Using While loop (User Input)

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Method #1: Using While loop (Static Input)

Approach:

Give the two numbers m and n as static input and store them in two separate variables.
Take a variable result and initialize the variable with 0.
Loop till M is greater than N using while loop.
Check if M is even or odd using the If statement.
If it is true then increment the value of M by 1 and result by 1.
Divide the M by 2 after the end of the If statement.
Increment the result by 1.
Print the result +N-M.
The Exit of the Program.

Below is the implementation:

# Give the two numbers m and n as static input and store them in two separate variables.
mNumb = 10
nNumb = 6
# Take a variable result and initialize the variable with 0.
resu = 0
# Loop till M is greater than N using while loop.
while(mNumb > nNumb):
    # Check if M is even or odd using the If statement.
    if (mNumb & 1):
        # If it is true then increment the value of M by 1 and result by 1.
        mNumb += 1
        resu += 1
    # Divide the M by 2 after the end of the If statement.
    mNumb //= 2
    # Increment the result by 1.
    resu += 1
# Print the result +N-M.
resu = resu+nNumb-mNumb
print('The result is', resu)

Output:

The result is 2

Method #2: Using While loop (User Input)

Approach:

Give the two numbers m and n as user input using map(), int(), and split() functions.
Store them in two separate variables.
Take a variable result and initialize the variable with 0.
Loop till M is greater than N using while loop.
Check if M is even or odd using the If statement.
If it is true then increment the value of M by 1 and result by 1.
Divide the M by 2 after the end of the If statement.
Increment the result by 1.
Print the result +N-M.
The Exit of the Program.

Below is the implementation:

# Give the two numbers m and n as user input using map(), int(), and split() functions.
# Store them in two separate variables.
mNumb, nNumb = map(int, input('Enter some random numbers M and N =').split())
# Take a variable result and initialize the variable with 0.
resu = 0
# Loop till M is greater than N using while loop.
while(mNumb > nNumb):
    # Check if M is even or odd using the If statement.
    if (mNumb & 1):
        # If it is true then increment the value of M by 1 and result by 1.
        mNumb += 1
        resu += 1
    # Divide the M by 2 after the end of the If statement.
    mNumb //= 2
    # Increment the result by 1.
    resu += 1
# Print the result +N-M.
resu = resu+nNumb-mNumb
print('The result is', resu)

Output:

Enter some random numbers M and N =12 19
The result is 7

Try yourselsf:

Find The Minimum Number Of Steps To Reach M From N
Find-The-Minimum-Number-Of-Steps-To-Reach-M-From-N
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Python Program to Take in the Marks of 5 Subjects and Display the Grade

October 16, 2024October 15, 2024 by Vikram Chiluka

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Given the marks of 5 subjects of the student, the task is to display the grade of the student based on the marks in Python.

Examples:

Example1:

Input:

Enter first subject marks as integer = 75
Enter second subject marks as integer = 79
Enter third subject marks as integer = 65
Enter fourth subject marks as integer = 82
Enter fifth subject marks as integer = 63

Output:

Average of 5 marks = 72.8 Grade =C

Example2:

Input:

Enter first subject marks as integer = 63
Enter second subject marks as integer = 19
Enter third subject marks as integer = 99
Enter fourth subject marks as integer = 85
Enter fifth subject marks as integer = 73

Output:

Average of 5 marks = 67.8 Grade =D

Program to Take in the Marks of 5 Subjects and Display the Grade in Python

There are several ways to calculate the grade of the student based on the marks of 5 subjects in Python some of them are:

Using IF..elif..else Statements(Static Input)
Using IF..elif..else Statements (User Input separated by newline)
Using IF..elif..else Statements and map(),split() functions (User Input separated by spaces)

Method #1:Using IF..elif..else Statements(Static Input)

Approach:

Give the 5 subject marks as static input and store them in 5 variables.
Calculate the sum of the 5 subject marks and store it in a variable.
Divide the sum by 5 to get the average of all the given marks.
To determine the grade based on the average of the marks, use an if…Elif..else conditions.
Print the grade.
The Exit of the Program.

Below is the implementation:

# Give the 5 subject marks as static input and store them in 5 variables.
marks1 = 95
marks2 = 85
marks3 = 89
marks4 = 93
marks5 = 87
# Calculate the sum of the 5 subject marks and store it in a variable.
summarks = marks1+marks2+marks3+marks4+marks5
# Divide the sum of marks by 5 to get the average of all the given marks.
avgmark = summarks/5
# To determine the grade based on the average of the marks, use an if...Elif..else conditions.
if(avgmark >= 90):
    print("Average of 5 marks =", avgmark, 'Grade =A')
elif(avgmark >= 80 and avgmark < 90):
    print("Average of 5 marks =", avgmark, 'Grade =B')
elif(avgmark >= 70 and avgmark < 80):
    print("Average of 5 marks =", avgmark, 'Grade =C')
elif(avgmark >= 60 and avgmark < 70):
    print("Average of 5 marks =", avgmark, 'Grade =D')
else:
    print("Average of 5 marks =", avgmark, 'Grade =E')

Output:

Average of 5 marks = 89.8 Grade =B

Explanation:

The user must enter 5 different values as static input and store them in different variables.
Then add together all five marks and divide by five to get the average.
If the average is more than 90, the grade is displayed as “A.”
If the average is between 80 and 90, the letter “B” is printed.
If the average is between 70 and 80, the letter “C” is printed.
If the average is between 60 and 70, the letter “D” is printed.
If the average falls below 60, the letter “F” is printed.

Method #2:Using IF..elif..else Statements (User Input separated by newline)

Approach:

Give the 5 subject marks as user input using int(input()) which converts the string to an integer.
Store them in 5 separate variables.
Calculate the sum of the 5 subject marks and store it in a variable.
Divide the sum by 5 to get the average of all the given marks.
To determine the grade based on the average of the marks, use an if…Elif..else conditions.
Print the grade.
The Exit of the Program.

Below is the implementation:

# Give the 5 subject marks as user input using int(input()) which converts the string to an integer.
# Store them in 5 separate variables.
marks1 = int(input('Enter first subject marks as integer = '))
marks2 = int(input('Enter second subject marks as integer = '))
marks3 = int(input('Enter third subject marks as integer = '))
marks4 = int(input('Enter fourth subject marks as integer = '))
marks5 = int(input('Enter fifth subject marks as integer = '))
# Calculate the sum of the 5 subject marks and store it in a variable.
summarks = marks1+marks2+marks3+marks4+marks5
# Divide the sum of marks by 5 to get the average of all the given marks.
avgmark = summarks/5
# To determine the grade based on the average of the marks, use an if...Elif..else conditions.
if(avgmark >= 90):
    print("Average of 5 marks =", avgmark, 'Grade =A')
elif(avgmark >= 80 and avgmark < 90):
    print("Average of 5 marks =", avgmark, 'Grade =B')
elif(avgmark >= 70 and avgmark < 80):
    print("Average of 5 marks =", avgmark, 'Grade =C')
elif(avgmark >= 60 and avgmark < 70):
    print("Average of 5 marks =", avgmark, 'Grade =D')
else:
    print("Average of 5 marks =", avgmark, 'Grade =E')

Output:

Enter first subject marks as integer = 75
Enter second subject marks as integer = 79
Enter third subject marks as integer = 65
Enter fourth subject marks as integer = 82
Enter fifth subject marks as integer = 63
Average of 5 marks = 72.8 Grade =C

Method #3:Using IF..elif..else Statements and map(),split() functions (User Input separated by spaces)

Approach:

Give the 5 subject marks as user input separated by spaces using map(), split() functions.
Store them in 5 separate variables.
Calculate the sum of the 5 subject marks and store it in a variable.
Divide the sum by 5 to get the average of all the given marks.
To determine the grade based on the average of the marks, use an if…Elif..else conditions.
Print the grade.
The Exit of the Program.

Below is the implementation:

# Give the 5 subject marks as user input separated by spaces using map(), split() functions.
# Store them in 5 separate variables.
marks1, marks2, marks3, marks4, marks5 = map(int, input(
    'Enter 5 subject marks separated by spaces = ').split())
# Calculate the sum of the 5 subject marks and store it in a variable.
summarks = marks1+marks2+marks3+marks4+marks5
# Divide the sum of marks by 5 to get the average of all the given marks.
avgmark = summarks/5
# To determine the grade based on the average of the marks, use an if...Elif..else conditions.
if(avgmark >= 90):
    print("Average of 5 marks =", avgmark, 'Grade =A')
elif(avgmark >= 80 and avgmark < 90):
    print("Average of 5 marks =", avgmark, 'Grade =B')
elif(avgmark >= 70 and avgmark < 80):
    print("Average of 5 marks =", avgmark, 'Grade =C')
elif(avgmark >= 60 and avgmark < 70):
    print("Average of 5 marks =", avgmark, 'Grade =D')
else:
    print("Average of 5 marks =", avgmark, 'Grade =E')

Output:

Enter 5 subject marks separated by spaces = 45 96 78 99 92
Average of 5 marks = 82.0 Grade =B

Read Also:

Python program to create grade calculator?
Python program to find grade of a student using if else?
Student mark list program in python using for loop?
Python program to find average and grade for given marks?
Write a program to take in the marks of 5 subjects and display the grade in c?
Python program to calculate total marks percentage and grade of a student?
Student mark list program in python using function?
Student mark list program in python using class?
Write a program to enter marks of 5 subjects and calculate percentage and division?
Write a program to display student name and marks in python?
Python program to create grade calculator?
Python program to take in the marks of 5 subjects and display the grade?
Write a python program to take in the marks of 5 subjects and display the grade?

Related Programs:

Python Program to Count Non Palindrome words in a Sentence

October 16, 2024October 15, 2024 by Vikram Chiluka

In the previous article, we have discussed Python Program to Find Leaders in an Array/List
Given a string and the task is to count all the Non-palindromic words in a given sentence.

Palindrome:

If the reverse of a string is the same as the string, it is said to be a palindrome.

Example :

Given string = “sos asked to bring the madam “.

Output :

Explanation: In this “madam”, “sos” are the palindromic words. By sorting them we get {“madam”,”sos”}

Examples:

Example1:

Input:

Given String = "dad and mom both ordered to bring sos in malayalam"

Output:

The count of all the Non-palindromic words in a given sentence = 6

Example2:

Input:

Given String = "My mom and dad treats me in equal level"

Output:

The count of all the Non-palindromic words in a given sentence = 6

Program to Count Non-Palindrome words in a Sentence

Below are the ways to count all the Non-palindromic words in a given sentence.

Using For Loop (Static Input)
Using For loop (User Input)

Method #1: Using For Loop (Static Input)

Approach:

Give the string as static input and store it in a variable.
Take an empty list say “lst” and store it in another variable.
Split the given string using the split() function and store it in another variable.
Loop in the above-obtained split list of words using the for loop.
Check if the iterator value is not equal to the reverse of the iterator value using the if conditional statement.
If the statement is true, then append the respective iterator value to the above initialized empty list using the append() method.
Calculate the length above initialized list “lst” using the len() function and store it in a variable.
Print the count of all the Non-palindromic words in a given sentence.
The Exit of the Program.

Below is the implementation:

# Give the string as static input and store it in a variable.
gvn_str = "dad and mom both ordered to bring sos in malayalam"
# Take an empty list and store it in another variable.
lst = []
# Split the given string using the split() function and store it in another variable.
splt_str = gvn_str.split()
# Loop in the above-obtained split list of words using the for loop.
for wrd in splt_str:
    # Check if the iterator value is not equal to the reverse of the iterator value using
    # the if conditional statement.
    if wrd != wrd[::-1]:
     # If the statement is true, then append the respective iterator value to the
        # above initialized empty list using the append() method.
        lst.append(wrd)
# Calculate the length above initialized list "lst" using the len() function
# and store it in a variable.
# Print the count of all the Non-palindromic words in a given sentence.
count = len(lst)
# Print the count of all the Non-palindromic words in a given sentence.
print("The count of all the Non-palindromic words in a given sentence =", count)

Output:

The count of all the Non-palindromic words in a given sentence = 6

Method #2: Using For loop (User Input)

Approach:

Give the string as user input using the input() function and store it in a variable.
Take an empty list say “lst” and store it in another variable.
Split the given string using the split() function and store it in another variable.
Loop in the above-obtained split list of words using the for loop.
Check if the iterator value is not equal to the reverse of the iterator value using the if conditional statement.
If the statement is true, then append the respective iterator value to the above initialized empty list using the append() method.
Calculate the length above initialized list “lst” using the len() function and store it in a variable.
Print the count of all the Non-palindromic words in a given sentence.
The Exit of the Program.

Below is the implementation:

# Give the string as user input using the input() function and store it in a variable.
gvn_str = input("Enter some random string = ")
# Take an empty list and store it in another variable.
lst = []
# Split the given string using the split() function and store it in another variable.
splt_str = gvn_str.split()
# Loop in the above-obtained split list of words using the for loop.
for wrd in splt_str:
    # Check if the iterator value is notequal to the reverse of the iterator value using
    # the if conditional statement.
    if wrd != wrd[::-1]:
     # If the statement is true, then append the respective iterator value to the
        # above initialized empty list using the append() method.
        lst.append(wrd)
# Calculate the length above initialized list "lst" using the len() function
# and store it in a variable.
# Print the count of all the Non-palindromic words in a given sentence.
count = len(lst)
# Print the count of all the Non-palindromic words in a given sentence.
print("The count of all the Non-palindromic words in a given sentence =", count)

Output:

Enter some random string = My mom and dad treats me in equal level
The count of all the Non-palindromic words in a given sentence = 6

Explore more instances related to python concepts from Python Programming Examples Guide and get promoted from beginner to professional programmer level in Python Programming Language.

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Python Program to Find Leaders in an Array/List

October 16, 2024October 15, 2024 by Vikram Chiluka

In the previous article, we have discussed Python Program to Check Automorphic Number or Not
Leader:

If an element is greater than all of the elements on its right side, it is the leader. And the last element is always a leader.

Examples:

Example1:

Input:

Given list =[23, 11, 1, 7, 8, 6, 3]

Output:

The leaders of the given list [23, 11, 1, 7, 8, 6, 3] are :
23
11
8
6
3

Example2:

Input:

Given List =  [1, 2, 3, 7, 8, 6]

Output:

The leaders of the given list [1, 2, 3, 7, 8, 6] are :
8
6

Given a list, the task is to find all the leaders of the given list in python.

Program to Find Leaders in an Array/List in Python

Below are the ways to find all the leaders of the given list in python some of them are:

Using For Loop (Static Input)
Using For loop (User Input)

Method #1: Using For Loop (Static Input)

Approach:

Give the list as static input and store it in a variable.
Calculate the length of the list and store it in another variable.
Loop from 0 to the length of the list using the For loop.
Loop from parent loop iterator value to the length of the list using another Nested for loop(Inner For loop)
Check if the element at the index of the parent loop iterator value is less than or equal to the element at the index of the inner loop iterator value.(gvnlist [ m ] <= gvnlist [ n ] ) using the if conditional statement.
If it is true then break the inner loop using the break keyword.
After the end of the inner For loop check if the inner loop iterator value is equal to the length of the given list -1 using the if conditional statement.
If it is true then it is the leader so print it.
The Exit of the Program.

Below is the implementation:

# Give the list as static input and store it in a variable.
gvnlstt = [23, 11, 1, 7, 8, 6, 3]
# Calculate the length of the list and store it in another variable.
lstleng = len(gvnlstt)
print('The leaders of the given list', gvnlstt, 'are :')
# Loop from 0 to the length of the list using the For loop.
for m in range(lstleng):
    # Loop from parent loop iterator value to the length of the list
    # using another Nested for loop(Inner For loop)
    for n in range(m+1, lstleng):
            # Check if the element at the index of the parent loop iterator value
        # is less than or equal to the element at the index of the inner loop iterator value.
        # (gvnlist[m] <= gvnlist[n]) using the if conditional statement.
        if (gvnlstt[m] <= gvnlstt[n]):
            # If it is true then break the inner loop using the break keyword.
            break

            # After the end of the inner For loop check if the inner loop iterator value
        # is equal to the length of the given list - 1 using the if conditional statement.
    if(n == lstleng-1):
        # If it is true then it is the leader so print it.
        print(gvnlstt[m])

Output:

The leaders of the given list [23, 11, 1, 7, 8, 6, 3] are :
23
11
8
6
3

Method #2: Using For loop (User Input)

Approach:

Give the list as user input using list(),map(),input(),and split() functions.
Store it in a variable.
Calculate the length of the list and store it in another variable.
Loop from 0 to the length of the list using the For loop.
Loop from parent loop iterator value to the length of the list using another Nested for loop(Inner For loop)
Check if the element at the index of the parent loop iterator value is less than or equal to the element at the index of the inner loop iterator value.(gvnlist [ m ] <= gvnlist [ n ] ) using the if conditional statement.
If it is true then break the inner loop using the break keyword.
After the end of the inner For loop check if the inner loop iterator value is equal to the length of the given list -1 using the if conditional statement.
If it is true then it is the leader so print it.
The Exit of the Program.

Below is the implementation:

# Give the list as user input using list(),map(),input(),and split() functions.
# Store it in a variable.
gvnlstt = list(map(int, input(
    'Enter some random List Elements separated by spaces = ').split()))
# Calculate the length of the list and store it in another variable.
lstleng = len(gvnlstt)
print('The leaders of the given list', gvnlstt, 'are :')
# Loop from 0 to the length of the list using the For loop.
for m in range(lstleng):
    # Loop from parent loop iterator value to the length of the list
    # using another Nested for loop(Inner For loop)
    for n in range(m+1, lstleng):
            # Check if the element at the index of the parent loop iterator value
        # is less than or equal to the element at the index of the inner loop iterator value.
        # (gvnlist[m] <= gvnlist[n]) using the if conditional statement.
        if (gvnlstt[m] <= gvnlstt[n]):
            # If it is true then break the inner loop using the break keyword.
            break

            # After the end of the inner For loop check if the inner loop iterator value
        # is equal to the length of the given list - 1 using the if conditional statement.
    if(n == lstleng-1):
        # If it is true then it is the leader so print it.
        print(gvnlstt[m])

Output:

Enter some random List Elements separated by spaces = 1 2 3 7 8 6
The leaders of the given list [1, 2, 3, 7, 8, 6] are :
8
6

Explore more instances related to python concepts from Python Programming Examples Guide and get promoted from beginner to professional programmer level in Python Programming Language.

Answer these:

Write a program to print all the leaders in the array in python?
Leaders in array coding ninjas?
Write a program to print all the leaders in the array in c?
Leaders in an array java program?
Leaders in array coding ninjas github?
Sum of leaders in an array?
Leaders in an array gfg practice?
Leaders in an array leetcode?
Leaders in array coding ninjas?
Leaders in an array java program?
Leaders in array coding ninjas github?
Lum of leaders in an array?
Leaders in an array gfg practice?
Leaders in an array leetcode?
Find leaders in array?
How to find leaders in an array?
Find leaders in an array leetcode?
Python program to find an element in a list?
Python program to find adjacent elements in a list?

Related Posts On

Object oriented programming python interview questions – Python Interview Questions on Classes and Inheritance

October 16, 2024October 15, 2024 by Prasanna

Object oriented programming python interview questions: We have compiled most frequently asked Python Interview Questions which will help you with different expertise levels. Inheritance in python interview questions, Python oops interview questions, Oops concepts in python interview questions, Inheritance interview questions, Python viva questions, Questions On Inheritance In Python, Interview questions in python, Oops Questions In Python, Inheritance in python, Python inheritance questions.

Python Interview Questions on Classes and Inheritance

Modules

Modules are used to create a group of functions that can be used by anyone on various projects.
Any file that has python code in it can be thought of as a Module.
Whenever we have to use a module we have to import it into the code.
Syntax:

import module_name

Object Orientation

Object Orientation programming helps in maintaining the concept of reusability of code.
Object-Oriented Programming languages are required to create readable and reusable code for complex programs.

Classes

A class is a blueprint for the object.
To create a class we use the Keyword class.
The class definition is followed by the function definitions, class class_name:

def function_name(self):

Components of a class
A class would consist of the following components:

class Keyword
instance and class attributes
self keyword
__init__function

Instance and class attribute

Python object oriented programming interview questions: Class attributes remain the same for all objects of the class whereas instance variables are parameters of__init__( ) method. These values are different for different objects.

The self

It is similar to this in Java or pointers in C++.
All functions in Python have one extra first parameter (the ‘self’) in the function definition, even when any function is invoked no value is passed for this parameter.
If there a function that takes no arguments, we will have to still mention one parameter – the “self’ in the function definition.
The__init__( ) method:
Similar to the constructor in Java
__init__( ) is called as soon as an object is instantiated. It is used to
initialize an object.

Question:
What will be the output of the following code?

class BirthdayWishes:
   def__init__(self, name):
        self.name = name
   def bday_wishes(self):
        print("Happy Birthday ", self.name,"!!")
bdaywishes = BirthdayWishes("Christopher")
bdaywishes.bday_wishes( )

Answer:

The output will be as follows:
Happy Birthday, Christopher !!

Question:
What are class variables and instance variables?
Answer:

Class and instance variables are defined as follows:

 class Class_name:
     class_variable_name = static_value

     def__init__(instance_variable_val):
           Instance_variable_name = instance_ variable val

Class variables have the following features:

They are defined within class construction
They are owned by the class itself
They are shared by all instances in class
Generally have the same value for every instance
They are defined right under the class header
Class variables can be accessed using the dot operator along with the class name as shown below:

Class name. class_variable_name

The instance variables on the other hand:

Are owned by instances.
Different instances will have different values for instance variables.
To access the instance variable it is important to create an instance of the class:

instance_name = Class_name( )
instance_name. Instance variable name

Question:
What would be the output of the following code:

class sum_total:
      def calculation(self, number1,number2 = 8,):
         return number1 + number2
st = sum_total( )
print(st.calculation(10,2))

Answer:

Question:
When is__init__( ) function called ?
Answer.
The__init__( ) function is called when the new object is instantiated.

Question:
What will be the output of the following code?

class Point:
   def__init__(self, x=0,y=10,z=0):
        self.x = x + 2
        self.y = y + 6
        self.z = z + 4
p = Point(10, 20,30)
print (p.x, p.y, p.z)

Answer:

12 26 34

Question:
What will be the output for the following code?

class StudentData:
    def__init__(self, name, score, subject):
         self.name = name
         self.score = score
         self.subject = subject
    def getData(self):
         print("the result is {0}, {1}, {2}".
format(self.name, self.score, self.subject))
sd = StudentData("Alice",90,"Maths")
sd.getData( )

Answer:

the result is Alice, 90, Maths

Question:
What will be the output for the following code?

class Number__Value:
    def init (self, num):
      self.num = num 
      num = 500
num = Number_Value(78.6)
print(num.num)

Answer:

78.6

Inheritance

Object-Oriented languages allow us to reuse the code. Inheritance is one such way that takes code reusability to another level altogether. In an inheritance, we have a superclass and a subclass. The subclass will have attributes that are not present in the superclass. So, imagine that we are making a software program for a Dog Kennel. For this, we can have a dog class that has features that are common in all dogs. However, when we move on to specific breeds there will be differences in each breed.

So, we can now create classes for each breed. These classes will inherit common features of the dog class and to those features, it will add its own attributes that make one breed different from the other. Now, let’s try something. Let’s go step by step. Create a class and then create a subclass to see how things work. Let’s use a simple example so that it is easy for you to understand the mechanism behind it.

Step 1:
Let’s first define a class using the “Class” Keyword as shown below:

class dog( ):

Step 2:
Now that a class has been created, we can create a method for it. For this example, we create one simple method which when invoked prints a simple message I belong to a family of Dogs.

def family(self):
      print("I belong to the family of Dogs")

The code so far looks like the following:

class dog( ):
      def family(self):
            print("I belong to the family of Dogs")

Step 3:
In this step we create an object of the class dog as shown in the following code:

c = dog( )

Step 4:
The object of the class can be used to invoke the method family( ) using the dot ‘.’ operator as shown in the following code:

c.family( )

At the end of step 4 the code would look like the following:

class dog( ):
   def family(self):
       print("I belong to the family of Dogs")

c = dog( )
c.family( )

When we execute the program we get the following output:

I belong to the family of Dogs

From here we move on to the implementation of the concept of inheritance. It is widely used in object-oriented programming. By using the concept of inheritance you can create a new class without making any modification to the existing class. The existing class is called the base and the new class that inherits it will be called the derived class. The features of the base class will be accessible to the derived class.
We can now create a class german shepherd that inherits the class dog as shown in the following code:

class germanShepherd(dog):
     def breed(self):
         print ("I am a German Shepherd")

The object of a class german shepherd can be used to invoke methods of the class dog as shown in the following code:

Final program
class dog():
     def family(self):
           print ("I belong to the family of Dogs")
class german shepherd(dog):
    def breed(self) :
           print ("I am a German Shepherd")
c = germanShepherd!)
c.family( )
c.breed( )

Output

I belong to the family of Dogs 
I am a German Shepherd

If you look at the code above, you can see that object of class germanShepherd can be used to invoke the method of the class.
Here are few things that you need to know about inheritance.
Any number of classes can be derived from a class using inheritance.
In the following code, we create another derived class Husky. Both the classes germaShepherd and husky call the family method of dog class and breed method of their own class.

class dog( ):
   def family(self):
       print("I belong to the family of Dogs")

class germanShepherd(dog):
    def breed(self):
         print("I am a German Shepherd")

class husky(dog):
   def breed(self):
       print("I am a husky")
g = germanShepherd()
g.family()
g. breed()
h = husky ()
h. family()
h .breed()

Output

I belong to family of Dogs 
I am a German Shepherd 
I belong to family of Dogs 
I am a husky

A derived class can override any method of its base class.

class dog( ):
   def family(self):
       print ("I belong to family of Dogs")

class germanShepherd(dog):
    def breed(self):
        print("I am a German Shepherd")
class husky(dog):
    def breed(self):

print("I am a husky")
def family(self):
print ("I am class apart")
g = germanShepherd()
g.family()
g. breed()
h = husky ()
h. family() h.breed()

Output

I belong to the family of Dogs 
I am a German Shepherd 
I am class apart 
I am a husky

A method can call a method of the base class with the same name.

Look at the following code, the class husky has a method family( ) which call the family( ) method of the base class and adds its own code after that.

class dog( ):
  def family(self):
        print("I belong to family of Dogs")

class germanShepherd(dog):
   def breed(self) :
      print ("I am a German Shepherd")

class husky(dog):
   def breed(self):
       print("I am a husky")
   def family(self):
        super().family()
       print("but I am class apart")

g = germanShepherd( )
g.family( )
g. breed( )
h = husky( )
h. family( ) h.breed( )

Output

I belong to the family of Dogs 
I am a German Shepherd 
I belong to the family of Dogs 
but I am class apart 
I am a husky

Question:
What are multiple inheritances?
Answer:
If a class is derived from more than one class, it is called multiple inheritances.

Question:
A is a subclass of B. How can one invoke the__init__function in B from A?
Answer:
The__init__function in B can be invoked from A by any of the two methods:

super( ).__init__( )
__init__(self)

Question:
How in Python can you define a relationship between a bird and a parrot.
Answer:
Inheritance. Parrot is a subclass of birds.

Question:
What would be the relationship between a train and a window?
Answer:
Composition

Question:
What is the relationship between a student and a subject?
Answer:
Association

Question:
What would be the relationship between a school and a teacher?
Answer:
Composition

Question:
What will be the output for the following code:

class Twice_multiply:
def __init__(self):
self.calculate (500)

def calculate(self, num):
self.num = 2 * num;
class Thrice_multiply(Twice_multiply):
def__init__(self):
super ( ) .__init__( )
print("num from Thrice_multiply is", self. num)

def calculate(self, num):
self.num = 3 * num;
tm = Thrice_multiply()

Answer:

num from Thrice_multiply is 1500
>>>

Question:
For the following code is there any method to verify whether tm is an object of Thrice_multiply class?

class Twice_multiply:
   def__init__(self) :
       self.calculate(500)
   def calculate(self, num) :
        self.num = 2 * num;
class Thrice_multiply(Twice_multiply):
    def __init__(self) :
      super () .__init__()
      print("num from Thrice_multiply is", self. num)
def calculate(self, num):
     self.num = 3 * num;
tm = Thrice_multiply( )

Answer:
Yes, one can check whether an instance belongs to a class or not using isinstance( ) function.

isinstance(tm,Thrice_multiply)

Try yourself:

Questions About Inheritance
What Is Oops In Python Interview Questions
Python Inheritance Interview Questions
Python Oops Questions

Evaluation of postfix expression – Python Program to Evaluate a Postfix Expression Using Stack

October 16, 2024October 15, 2024 by Vikram Chiluka

Evaluation of postfix expression: Don’t miss the chance of Java programs examples with output pdf free download as it is very essential for all beginners to experienced programmers for cracking the interviews.

Postfix Expression:

Evaluating postfix expression java: A postfix expression (also known as Reverse Polish Notation) consists of a single letter or operator followed by two postfix strings. Every postfix string that is longer than a single variable has two operands followed by an operator.

Algebraic expressions are represented using the Postfix notation. Because parenthesis is not required in postfix notation, expressions written in postfix form are evaluated faster than expressions written in infix notation. We’ve talked about infix-to-postfix conversion. The evaluation of postfix expressions is described in this post.

Examples:

Example1:

Input:

given postfix Expression=”91-82×63+”

Output:

The value of the given postfix expression = 9

Example2:

Input:

given postfix Expression="72/96-8+"

Output:

The value of the given postfix expression = 11

Given a Postfix Expression, the task is to evaluate the given postfix Expression using a stack in Python.

Program to Evaluate a Postfix Expression Using a Stack in Python

Algorithm:
Implementation(Static Input)
Implementation(User Input)

1)Algorithm:

Using a stack, we can quickly compute a postfix expression. The objective is to go from left to right via the given postfix phrase. Push the operand into the stack if the current character in the expression is an operand; otherwise, if the current character is an operator, pop the top two elements from the stack, evaluate them using the current operator, and push the result back into the stack. After we’ve processed all of the expression characters, there will be only one element in the stack carrying the value of a postfix expression.

2)Implementation(Static Input)

Approach:

Give the postfix Expression as static input and store it in a variable.
Pass the given postfix Expression as an argument to evalpostfix function
Create a stack by taking an empty list which acts as a stack in this case to hold operands (or values).
Traverse the given postfix expression using For loop.
Do the following for each scanned element.
a) Push the element into the stack if it is a number.
b) Evaluate the operator and return the answer to the stack.
If the operator is ‘+’ then perform an addition operation on the top two elements by popping them out.
If the operator is ‘-‘ then perform a subtraction operation on the top two elements by popping them out.
If the operator is ‘/’ then perform a division operation on the top two elements by popping them out.
If the operator is ‘*’ then perform a multiplication operation on the top two elements by popping them out.
The only number in the stack is the final answer when the expression is traversed.
The Exit of the Program.

Below is the implementation:

# Function which accepts the given postfix expression as argument
# and evaluates the expression using stack and return the value


def evaluatePostfix(givenExp):

    # Create a stack by taking an empty list which acts
    # as a stack in this case to hold operands (or values).
    givenstack = []

    # Traverse the given postfix expression using For loop.
    for charact in givenExp:

        # Push the element into the given stack if it is a number.
        if charact.isdigit():
            givenstack.append(int(charact))

        # if the character is operator
        else:
            # remove the top two elements from the stack
            topfirst = givenstack.pop()
            topsecond = givenstack.pop()

            # Evaluate the operator and return the answer to the stack using append() funtion.
            # If the operator is '+' then perform an addition operation on
            # the top two elements by popping them out.
            if charact == '+':
                givenstack.append(topsecond + topfirst)
            # If the operator is '-' then perform a subtraction operation
            # on the top two elements by popping them out.
            elif charact == '-':
                givenstack.append(topsecond - topfirst)
            # If the operator is '/' then perform a division operation on
            # the top two elements by popping them out.
            elif charact == '×':
                givenstack.append(topsecond * topfirst)
            # If the operator is '*' then perform a multiplication operation
            # on the top two elements by popping them out.
            elif charact == '/':
                givenstack.append(topsecond // topfirst)

    # The only number in the stack is the final answer when the expression is traversed.
    # return the answer to the main function
    return givenstack.pop()


# Driver code
# Give the postfix Expression as static input and store it in a variable.
givenExp = "91-82×63+"
# Pass the given postfix Expression as an argument to evalpostfix function
print('The value of the given postfix expression =', evaluatePostfix(givenExp))

Output:

The value of the given postfix expression = 9

3)Implementation(User Input)

Approach:

Give the postfix Expression as user input using the input() function and store it in a variable.
Pass the given postfix Expression as an argument to evalpostfix function
Create a stack by taking an empty list which acts as a stack in this case to hold operands (or values).
Traverse the given postfix expression using For loop.
Do the following for each scanned element.
a) Push the element into the stack if it is a number.
b) Evaluate the operator and return the answer to the stack.
If the operator is ‘+’ then perform an addition operation on the top two elements by popping them out.
If the operator is ‘-‘ then perform a subtraction operation on the top two elements by popping them out.
If the operator is ‘/’ then perform a division operation on the top two elements by popping them out.
If the operator is ‘*’ then perform a multiplication operation on the top two elements by popping them out.
The only number in the stack is the final answer when the expression is traversed.
The Exit of the Program.

Below is the implementation:

# Function which accepts the given postfix expression as argument
# and evaluates the expression using stack and return the value


def evaluatePostfix(givenExp):

    # Create a stack by taking an empty list which acts
    # as a stack in this case to hold operands (or values).
    givenstack = []

    # Traverse the given postfix expression using For loop.
    for charact in givenExp:

        # Push the element into the given stack if it is a number.
        if charact.isdigit():
            givenstack.append(int(charact))

        # if the character is operator
        else:
            # remove the top two elements from the stack
            topfirst = givenstack.pop()
            topsecond = givenstack.pop()

            # Evaluate the operator and return the answer to the stack using append() funtion.
            # If the operator is '+' then perform an addition operation on
            # the top two elements by popping them out.
            if charact == '+':
                givenstack.append(topsecond + topfirst)
            # If the operator is '-' then perform a subtraction operation
            # on the top two elements by popping them out.
            elif charact == '-':
                givenstack.append(topsecond - topfirst)
            # If the operator is '/' then perform a division operation on
            # the top two elements by popping them out.
            elif charact == '×':
                givenstack.append(topsecond * topfirst)
            # If the operator is '*' then perform a multiplication operation
            # on the top two elements by popping them out.
            elif charact == '/':
                givenstack.append(topsecond // topfirst)

    # The only number in the stack is the final answer when the expression is traversed.
    # return the answer to the main function
    return givenstack.pop()


# Driver code
# Give the postfix Expression as user input using input() function and store it in a variable.
givenExp = input('Enter some random postfix Expression = ')
# Pass the given postfix Expression as an argument to evalpostfix function
print('The value of the given postfix expression =', evaluatePostfix(givenExp))

Output:

Enter some random postfix Expression = 72/96-8+
The value of the given postfix expression = 11

Answer these:

Evaluate postfix expression using stack example?
Write a program to evaluate postfix expression using stack in c?
Evaluation of postfix expression using stack in c?
Postfix evaluation calculator?
Postfix evaluation of 12 39 4 is?
Program to evaluate postfix expression in c?
Postfix expression evaluation example?
Evaluation of postfix expression program in c?
Python program to evaluate a postfix expression using stack?

Related Programs:

Python make list of odd numbers – Python Program to Find Sum of Odd Numbers Using Recursion in a List/Array

October 16, 2024October 15, 2024 by Vikram Chiluka

Python make list of odd numbers: In the previous article, we have discussed Python Program to Check Armstrong Number using Recursion

Given a list and the task is to find the sum of odd numbers using recursion in a given list in python.

Recursion:

Recursion is the process by which a function calls itself directly or indirectly, and the associated function is known as a recursive function. Certain issues can be addressed fairly easily using a recursive approach. Towers of Hanoi (TOH), Inorder /Preorder/Postorder Tree Traversals, DFS of Graph, and other analogous issues are examples.

Some of them are:

Sum of array using recursion in python
Sum of array elements using recursion in c
Sum of array using recursion coding ninjas
Sum of array elements using recursion javascript

Examples:

Example1:

Input:

Given List = [6, 12, 4, 2, 3, 9, 1, 5]

Output:

The Sum of Odd Elements in a given list [6, 12, 4, 2, 3, 9, 1, 5] = 18

Example2:

Input:

Given List = [4, 3, 1, 5, 11]

Output:

The Sum of Odd Elements in a given list [4, 3, 1, 5, 11] = 20

Program to Find Sum of Odd Numbers Using Recursion in a List/Array in Python

Below are the ways to find the sum of odd numbers using recursion in a given list in python:

Using Recursion (Static Input)
Using Recursion (User Input)

Method #1: Using Recursion (Static Input)

Approach:

Give the list as static input and store it in a variable.
Calculate the length of the given list and store it in another variable.
Take a variable say rslt_sum and initialize its value to 0.
Pass the given list and length of the given list as the arguments to the oddelemt_sum function.
Create a recursive function to say oddelemt_sum which takes the given list and length of the given list as the arguments and returns the sum of odd numbers in a given list using recursion.
Make the rslt_sum a global declaration.
Check if the length of the given list is greater than 0 using the if conditional statement.
If the statement is true, then subtract 1 from the length of the given list and store it in a variable k.
Check if the element present at the index k of the given list is odd using the modulus operator and if conditional statement.
If the statement is true, add the element present at the index k of the given list to the above-initialized rslt_sum.
Store it in the same variable.
Pass the given list and k value as the arguments to the oddelemt_sum function.{Recursive Logic}
Return rslt_sum.
Print the sum of odd numbers in the above-given list.
The Exit of the Program.

Below is the implementation:

# Create a recursive function to say oddelemt_sum which takes the given list and length
# of the given list as the arguments and returns the sum of odd numbers in a given list
# using recursion.


def oddelemt_sum(gven_lst, len_lst):
    # Make the rslt_sum a global declaration.
    global rslt_sum
    # Check if the length of the given list is greater than 0 using the if conditional
    # statement.
    if(len_lst > 0):
        # If the statement is true, then subtract 1 from the length of the given list and
        # store it in a variable k.
        k = len_lst-1
   # Check if the element present at the index k of the given list is odd using modulus
   # operator and if conditional statement.
        if(gven_lst[k] % 2 != 0):
            # If the statement is true, add the element present at the index k of the
            # given list to the above-initialized rslt_sum.
            # Store it in the same variable.
            rslt_sum = rslt_sum+gven_lst[k]
           # Pass the given list and k value as the arguments to the oddelemt_sum function
           # {Recursive Logic}.
        oddelemt_sum(gven_lst, k)
       # Return rslt_sum.
    return rslt_sum


# Give the list as static input and store it in a variable.
gven_lst = [6, 12, 4, 2, 3, 9, 1, 5]
# Calculate the length of the given list and store it in another variable.
len_lst = len(gven_lst)
# Take a variable say rslt_sum and initialize its value to 0.
rslt_sum = 0
# Pass the given list and length of the given list as the arguments to the oddelemt_sum
# function.
# Print the sum of odd numbers in the above-given list.
print("The Sum of Odd Elements in a given list",
      gven_lst, "=", oddelemt_sum(gven_lst, len_lst))

Output:

The Sum of Odd Elements in a given list [6, 12, 4, 2, 3, 9, 1, 5] = 18

Method #2: Using Recursion (User Input)

Approach:

Give the list as user input using list(),map(),input(),and split() functions.
Store it in a variable.
Calculate the length of the given list and store it in another variable.
Take a variable say rslt_sum and initialize its value to 0.
Pass the given list and length of the given list as the arguments to the oddelemt_sum function.
Create a recursive function to say oddelemt_sum which takes the given list and length of the given list as the arguments and returns the sum of odd numbers in a given list using recursion.
Make the rslt_sum a global declaration.
Check if the length of the given list is greater than 0 using the if conditional statement.
If the statement is true, then subtract 1 from the length of the given list and store it in a variable k.
Check if the element present at the index k of the given list is odd using the modulus operator and if conditional statement.
If the statement is true, add the element present at the index k of the given list to the above-initialized rslt_sum.
Store it in the same variable.
Pass the given list and k value as the arguments to the oddelemt_sum function.{Recursive Logic}
Return rslt_sum.
Print the sum of odd numbers in the above-given list.
The Exit of the Program.

Below is the implementation:

# Create a recursive function to say oddelemt_sum which takes the given list and length
# of the given list as the arguments and returns the sum of odd numbers in a given list
# using recursion.


def oddelemt_sum(gven_lst, len_lst):
    # Make the rslt_sum a global declaration.
    global rslt_sum
    # Check if the length of the given list is greater than 0 using the if conditional
    # statement.
    if(len_lst > 0):
        # If the statement is true, then subtract 1 from the length of the given list and
        # store it in a variable k.
        k = len_lst-1
   # Check if the element present at the index k of the given list is odd using modulus
   # operator and if conditional statement.
        if(gven_lst[k] % 2 != 0):
            # If the statement is true, add the element present at the index k of the
            # given list to the above-initialized rslt_sum.
            # Store it in the same variable.
            rslt_sum = rslt_sum+gven_lst[k]
           # Pass the given list and k value as the arguments to the oddelemt_sum function
           # {Recursive Logic}.
        oddelemt_sum(gven_lst, k)
       # Return rslt_sum.
    return rslt_sum


# Give the list as user input using list(),map(),input(),and split() functions.
# Store it in a variable.
gven_lst = list(map(int, input(
   'Enter some random List Elements separated by spaces = ').split()))
# Calculate the length of the given list and store it in another variable.
len_lst = len(gven_lst)
# Take a variable say rslt_sum and initialize its value to 0.
rslt_sum = 0
# Pass the given list and length of the given list as the arguments to the oddelemt_sum
# function.
# Print the sum of odd numbers in the above-given list.
print("The Sum of Odd Elements in a given list",
      gven_lst, "=", oddelemt_sum(gven_lst, len_lst))

Output:

Enter some random List Elements separated by spaces = 4 3 1 5 11
The Sum of Odd Elements in a given list [4, 3, 1, 5, 11] = 20

Find the best practical and ready-to-use Python Programming Examples that you can simply run on a variety of platforms and never stop learning.

Test Yourself:

Write a python program to calculate the sum of a list of numbers using recursion?
Check number in array using recursion in python?
Check number in array using recursion in java?
Write a python program to calculate the sum of a list of numbers using recursion?
Python program to find sum of odd numbers using recursion in a list/array?

Related Posts On:

Eulers number excel – Python Program to Compute the Value of Euler’s Number ,Using the Formula: e = 1 + 1/1! + 1/2! + …… 1/n!

October 16, 2024October 15, 2024 by Vikram Chiluka

Euler’s number python: Our website provided core java programs examples with output aid beginners and expert coders to test their knowledge gap and learn accordingly.

Refer these:

Python program to compute the value of eulers number e use the formula e 1 1 1 12 1n.
Python program to compute sum of 1 x2 x23 xnn1.
1122 33 python.
1/1/2/2 3/3 python.

Given a number numb, the task is to compute the value of the Euler’s number expansion in Python.

Examples:

Example1:

Input:

given number =3

Output:

Enter some random number = 3
The total sum of euler's value of the series 2.67

Example2:

Input:

given number =5

Output:

The total sum of euler's value of the series  2.72

Program to Compute the Value of Euler’s Number ,Using the Formula: e = 1 + 1/1! + 1/2! + …… 1/n! in Python

Eulers number excel: There are several ways to calculate the value of the euler’s number some of them are:

Using factorial function and for loop(Static Input)
Using factorial function and for loop(User Input)
Using factorial function and while loop(Static Input)
Using factorial function and while loop(User Input)

Method #1:Using factorial function and for loop(Static Input)

Approach:

Give the number as static input.
Set the value of the totalsum variable to 1.
Find the total of the series using a for loop ranging from 1 to the number.
Compute the factorial using math. factorial() function.
After rounding to two decimal places, print the totalsum of the series.
Exit of program.

Below is the implementation:

import math
# Give the number of terms as static input.
numb = 5
# Set a totalsum variable which calculates the total sum and initialize it to 1.
totalsum = 1
# Find the total of the series using a for loop ranging from 1 to the number.
for val in range(1, numb+1):
  # Compute the factorial using math. factorial() function.
    totalsum = totalsum+(1/math.factorial(val))
# Print the totalsum value of the euler's series, rounded to two decimal places.
print("The total sum of euler's value of the series ", round(totalsum, 2))

Output:

The total sum of euler's value of the series  2.72

Method #2:Using factorial function and for loop(User Input)

Approach:

Scan the given number as user input by using int(input()) function.
Set the value of the totalsum variable to 1.
Find the total of the series using a for loop ranging from 1 to the number.
Compute the factorial using math. factorial() function.
After rounding to two decimal places, print the totalsum of the series.
Exit of program.

Below is the implementation:

import math
#  Scan the number as user input by using int(input()) function
numb = int(input('Enter some random number = '))
# Set a totalsum variable which calculates the total sum and initialize it to 1.
totalsum = 1
# Find the total of the series using a for loop ranging from 1 to the number.
for val in range(1, numb+1):
  # Compute the factorial using math. factorial() function.
    totalsum = totalsum+(1/math.factorial(val))
# Print the totalsum value of the euler's series, rounded to two decimal places.
print("The total sum of euler's value of the series ", round(totalsum, 2))

Output:

Enter some random number = 13
The total sum of euler's value of the series 2.72

Method #3:Using factorial function and while loop(Static Input)

Approach:

Give the number as static input.
Set a totalsum variable which calculates the total sum and initialize it to 0.
Take a variable say value and initialize it to 1.
Using while loop calculate the total sum till value greater than given number
Compute the factorial using math. factorial() function.
Calculate the totalsum by incrementing it value with 1/factorial value.
Increment the value by 1.
Print the totalsum of the series, rounded to two decimal places.
Exit of program.

Below is the implementation:

import math
# Give the number of terms as static input.
numb = 3
# Take a variable say value and initialize it to 1.
value = 1
# Set a totalsum variable which calculates the total sum and initialize it to 1.
totalsum = 1
# Using while loop calculate the total sum till value greater than given number
while(value <= numb):
   # Compute the factorial using math. factorial() function.
    totalsum = totalsum+(1/math.factorial(value))
    # Increment the value by 1.
    value = value+1
# Print the totalsum value of the euler's series, rounded to two decimal places.
print("The total sum of euler's value of the series ", round(totalsum, 2))

Output:

The total sum of euler's value of the series 2.67

Method #4:Using factorial function and while loop(User Input)

Approach:

Scan the given number as user input by using int(input()) function.
Set a totalsum variable which calculates the total sum and initialize it to 0.
Take a variable say value and initialize it to 1.
Using while loop calculate the total sum till value greater than given number
Compute the factorial using math. factorial() function.
Calculate the totalsum by incrementing it value with 1/factorial value.
Increment the value by 1.
Print the totalsum of the series, rounded to two decimal places.
Exit of program.

Below is the implementation:

import math
# Scan the number as user input by using int(input()) function
numb = int(input('Enter some random number = '))
# Take a variable say value and initialize it to 1.
value = 1
# Set a totalsum variable which calculates the total sum and initialize it to 1.
totalsum = 1
# Using while loop calculate the total sum till value greater than given number
while(value <= numb):
   # Compute the factorial using math. factorial() function.
    totalsum = totalsum+(1/math.factorial(value))
    # Increment the value by 1.
    value = value+1
# Print the totalsum value of the euler's series, rounded to two decimal places.
print("The total sum of euler's value of the series ", round(totalsum, 2))

Output:

Enter some random number = 3
The total sum of euler's value of the series 2.67

Test yourself:

Write a python program to find the value of e using infinite series of the function?
Write a program to compute 122334 nn1 in python?
Write ac program to compute the value of eulers number e use the formula e 11 1 12 13 1n?
Write a program to compute 1/2/2/3+3/4 n/n+1 in python?
Write ac program to compute the value of euler’s number e use the formula e 1/1 + 1 + 1/2 1/3 1/n?
Python program to find sum of series 1 + x + x^2?
Python program to compute the value of euler’s number e use the formula e = 1 + 1 + 1 + 1/2 1/n?
Python program to find sum of the series 1/1/1/2 + 1/3 + 1/n?
Python program to find sum of the series 1112 13 1n?
Python program to find sum of series 1 x x2?

Related Programs:

Printing dictionary python – Python: Print items of a dictionary line by line (4 ways)

October 15, 2024October 14, 2024 by Satyabrata Jena

How to print items of a dictionary line by line in python ?

Printing dictionary python: In python a dictionary is one of the important datatype which is used to store data values in key : value pair. Generally keys and values are mapped one-to-one. But it is not impossible that we can not map multiple values to a single key. So in this article we will discuss how we can map multiple values per key in dictionary. Let’s see left what else, python print dictionary keys and values, Python print dictionary pretty, Python print dictionary as table, Python print dictionary value, Print list of dictionaries python, Print nested dictionary python, Python print items of a dictionary line by line 4 ways *0#, Print dictionary items line by line python, Print dictionary line by line python, Print dictionary python in one line, Print list items line by line python, Print list in line python.

Syntax of dictionary :

dictionary_name = {key1: value1, key2: value2}

where,

key1, key2… represents keys in a dictionary. These keys can be a string, integer, tuple, etc. But keys needs to be unique.
value1, value2… represents values in dictionary. These values can be strings, numbers, list or list within a list etc.
key and value is separated by : (colon) symbol.
key-value pair symbol is separated by , (comma) symbol.

Example of a dictionary population where multiple values are associated with single key.

population = {"Odisha": 40000000, "Telangana": 50000000, "Delhi": 80000000, "Goa": 10000000}

So, let’s first create a dictionary and we will see how it prints the dictionary in a single line.

#Program

#dictionary created
population = {"Odisha": 40000000, "Telangana": 50000000, "Delhi": 80000000, "Goa": 10000000} 
#printing dictionary in a line
print("Printing dictionary in a single line :") 
print(population)

Output :
Printing dictionary in a single line :
population = {"Odisha": 40000000, "Telangana": 50000000, "Delhi": 80000000, "Goa": 10000000}

It was very easy to print dictionary in a single line as to print the dictionary we just passed the dictionary name i.e population in the print statement. As the dictionary is small so we printed it in a single line also we understood it easily.

But think about a situation when the dictionary is too big and we need to print the dictionary line by line means one key-value pair in a single line then next key-value pair in next line and so on. It will be very easy for us also to understand a big dictionary very easily. So, in this article we will discuss how we can print items of a dictionary in line by line.

Method -1 : Print a dictionary line by line using for loop & dict.items()

Python print a dictionary: In python there is a function items( ), we can use that along with for loop to print the items of dictionary line by line. Actually dict.items( ) returns an iterable view object of the dictionary which is used to iterate over key-value pairs in the dictionary.

So, let’s take an example to understand it more clearly.

#Program

#dictionary created
population = {"Odisha": 40000000, "Telangana": 50000000, "Delhi": 80000000, "Goa": 10000000} 
#printing dictionary in line by line
# Iterating over key-value pairs in dictionary and printing them
for key, value in population.items():
    print(key, ' : ', value)

Output :
Odisha: 40000000
Telangana: 50000000
Delhi: 80000000
Goa: 10000000

Method -2 : Print a dictionary line by line by iterating over keys

Python print dict: Like in method-1 we did iterate over key-value pair, in method-2 we can only iterate over key and for each key we can access its value and print the respective value.

So, let’s take an example to understand it more clearly.

#Program

#dictionary created
population = {"Odisha": 40000000, "Telangana": 50000000, "Delhi": 80000000, "Goa": 10000000} 
#printing dictionary in line by line
# Iterating over key in dictionary and printing the value of that key
for key in population:
    print(key, ' : ', population[key])

Output :
Odisha: 40000000
Telangana: 50000000
Delhi: 80000000
Goa: 10000000

Method -3 : Print a dictionary line by line using List Comprehension

Print python dictionary: Using list comprehension and dict.items(), the contents of a dictionary can be printed line by line.

So, let’s take an example to understand it more clearly.

#Program

#dictionary created
population = {"Odisha": 40000000, "Telangana": 50000000, "Delhi": 80000000, "Goa": 10000000} 
#printing dictionary in line by line
[print(key,':',value) for key, value in population.items()]

Output : 
Odisha: 40000000 
Telangana: 50000000 
Delhi: 80000000 
Goa: 10000000

Method -4 : Print a dictionary line by line using json.dumps()

Python print dictionary: In python, json.dumps( ) is provided by json module to serialize the passed object to a json like string. So to print the dictionary line by line we can pass that dictionary in json.dumps( ).

So, let’s take an example to understand it more clearly.

#Program

import json
#dictionary created
population = {"Odisha": 40000000, "Telangana": 50000000, "Delhi": 80000000, "Goa": 10000000} 
#printing in json format
print(json.dumps(population, indent=1))

Output : 
Odisha: 40000000 
Telangana: 50000000 
Delhi: 80000000 
Goa: 10000000

Answer these:

How to print a dictionary line by line in python
Hrint dictionary line by line
How to print dictionary values in python line by line
How to print dictionary values in python using for loop