I used to be a QA engineer and when I first got into Python, one of the first questions that came to my mind while working on Python scripts was: “How Do You Change A Specific Line In A Text File In Python?” We will discuss the answer to this question in much detail below.
How Do You Change A Specific Line In A Text File In Python?
To change a specific line in a text file in Python, you can use the
replace() method on strings, which allows you to specify the text you want to replace and the text you want to replace it with.
Here is a quick example:
# Open the file in read mode with open('your_text_file_path.txt', 'r') as f: # Read the contents of the file into a list of lines lines = f.readlines() # Use for loop to go through each line in a "your_text_file_path.txt" for line_index, line in enumerate(lines): # Check each line for "old_text" and replace it # with "new_text" if it is found lines[line_index] = ( lines[line_index] .replace('old_text', 'new_text') ) # Open a new file in writing mode (this will create a new file) with open('your_new_text_file_path.txt', 'w') as f: # Write the modified lines to the new "your_new_text_file_path.txt" f.writelines(lines)