Python Program to Read Char-by-Char from File

Files In Python:

Python read file char by char: A file is a piece of data or information stored on a computer’s hard drive. You’re already familiar with a variety of file kinds, including music, video, and text files. Manipulation of these files is trivial with Python. Text files and binary files are the two types of files that are commonly used. Binary files contain binary data that can only be read by a computer, whereas text files include plain text.

For programmers and automation testers, Python file handling (also known as File I/O) is a crucial topic. Working with files is required in order to write to or read data from them.

In addition, if you didn’t know, I/O activities are the most expensive techniques via which software might fail. As a result, when implementing file processing for reporting or any other reason, you should proceed with caution. The construction of a high-performance application or a robust solution for automated software testing can benefit from optimizing a single file activity.

Program to Read Char-by-Char from File in Python

Approach:

Make a single variable to store the path of the file. This is a constant value. This value must be replaced with the file path from your own system in the example below.
Open the file in read-only mode. In this case, we’re simply reading the contents of the file.
Iterate through the lines of the file using the For loop.
Split the words of the line using the split() function and store them in a variable(it is of type list).
Loop in the above list using another Nested For loop.
Print all the characters of the word using another Nested For loop and print function.
The Exit of the Program.

Below is the implementation:

# Make a single variable to store the path of the file. This is a constant value.
# This value must be replaced with the file path from your own system in the example below.
givenFilename = "samplefile.txt"
# Open the file in read-only mode. In this case, we're simply reading the contents of the file.
with open(givenFilename, 'r') as givenfilecontent:
    # Iterate through the lines of the file using the For loop.
    print('The Characters in the given file : ')
    for gvnfileline in givenfilecontent:
      # Split the words of the line using the split() function and store them in a variable(it is of type list).
        gvnfilewords = gvnfileline.split()
        # Loop in the above list using another Nested For loop.
        for words in gvnfilewords:
            # Print all the characters of the word using another Nested For loop and print function.
            for charactrs in words:
                print(charactrs)

Output:

The words in the given file : 
H
e
l
l
o
B
t
e
c
h
G
e
e
k
s

Explanation:

The file path is stored in the variable ‘file name.’ Change the value of this variable to the path of your own file.
Dragging and dropping a file onto the terminal will show its path. The code will not run unless you change the value of this variable.
The file will be opened in reading mode. Use the open() function to open a file. The path to the file is the method’s first parameter, and the mode to open the file is the method’s second parameter.
When we open the file, we use the character ‘r’ to signify read-mode.
The split() method separates all of the words in the given file.
Iterate in the given words using For loop and print all the characters in it using the print() function.

samplefile.txt

Hello BtechGeeks

Sample Implementation in google colab:

Program to Read Char-by-Char from File in Python

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