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I am Recently quite new to python and am trying to write a script. What would be the easiest way to search for a string in a file and replace the whole line. I have found that re.sub can achieve this, but nothing is specific enough that I can do it.

For example:

 #configuration file Stuff that configures a file

to

 #configuration file Port 22

by searching for configures

Also does this command have different functions such as searching for a string in the middle of a line and replacing everything after it.

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1 Answer 1

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You can use replace() to replace the port number.

with open('resume.txt', 'r') as file: file_data = file.read() upd_port = file_data.replace('22', '4832') with open('resume.txt', 'w') as file: file.write(upd_port)
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