Isupper in python – Python String isupper() Method

Isupper in python: A Python string is a collection of characters surrounded by single, double, or triple quotes. The computer does not understand the characters; instead, it stores the manipulated character as a combination of 0’s and 1’s internally.

In this article we are going to discuss about isupper() method

String isupper() method in Python

1)isupper() method

Isupper python: If all of the characters are in upper case, the isupper() method returns True otherwise, it returns False.

Only alphabet characters are checked, not numbers, symbols, or spaces.

Syntax:

given_string.isupper()

Parameters:

No parameters are passed

Return:

If all cased characters in the string are uppercase and there is at least one cased character, this method returns true; otherwise, it returns false.

Examples:

2)Checking if given string is an uppercase or not

Using the isuuper() function, we can determine whether a string is uppercase or lowercase. If all of the string characters are upper case, the function isupper() returns True.

Below is the implementation:

# given string
string = "BTECHGEEKS"
# determining whether the given string is uppercase
if(string.isupper()):
    print("Given string is in uppercase")
else:
    print("Given string is not in uppercase")

Output:

Given string is in uppercase

EX-2)

# given string
string = "Btechgeeks"
# determining whether the given string is uppercase
if(string.isupper()):
    print("Given string is in uppercase")
else:
    print("Given string is not in uppercase")

Output:

Given string is not in uppercase

3)Checking if given number string is an uppercase or not

Assume we have a string that only contains numbers. Let’s use isupper to see if this string is uppercase or not ().

Below is the implementation:

# given string
string = "28112001"
# determining whether the given string is uppercase
if(string.isupper()):
    print("Given string is in uppercase")
else:
    print("Given string is not in uppercase")

Output:

Given string is not in uppercase

4)Checking if given string containing letters and numbers an uppercase or not

Assume we have a string that contains numbers and uppercase letters. Let’s use isupper to see if this string is uppercase or not ()

Below is the implementation:

# given string
string = "BTECH-28112001"
# determining whether the given string is uppercase
if(string.isupper()):
    print("Given string is in uppercase")
else:
    print("Given string is not in uppercase")

Output:

Given string is in uppercase

Explanation:

As string contains one or more upper case characters but no lower case characters. As a result, isupper() returned True.

5)Checking if given character is in uppercase or not

Individual characters have no data type in Python. A python string object can also be a single character. As a result, we can use the isupper() method to determine whether a character is upper case or not.

Below is the implementation:

# given string
string = "S"
# determining whether the given string is uppercase
if(string.isupper()):
    print("Given char is in uppercase")
else:
    print("Given char is not in uppercase")

Output:

Given char is in uppercase

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