remove \n in a text file in python

To remove the newlines (\n) in a text file using Python, you can read in the file line by line and remove the newline characters using the rstrip() string method, then write the modified lines back to the file. Here's an example code block:

main.py
with open('filename.txt', 'r') as file:
    lines = file.readlines()

with open('filename.txt', 'w') as file:
    for line in lines:
        file.write(line.rstrip('\n'))
171 chars
7 lines

In the first with open() block, we open the file in read mode and use the readlines() method to read its contents into a list of lines. In the second with open() block, we open the same file again, but this time in write mode, which will overwrite its contents. Then, we loop through the lines list, remove the newline character from each line using rstrip('\n'), and write the modified line back to the file using the write() method.