I need to do a small program in python to edit a file with superuser permissions. I think it's pretty simple but I've never worked with file management in python.
I have a file that according to an entry or value of a variable, I would have to remove a comment one line (delete //), and comment another (add //). This file allows you to configure another small program.
Thank you very much for your help and comments.
Greetings,
daniel
Finally, by researching and testing some solutions, I'm left with this:
def replace_line (file_name, line_num, text):
lines = open(file_name, 'r').readlines()
lines[line_num] = text
out = open(file_name, 'w')
out.writelines(lines)
out.close()
replace_line ('/ home / pi / test.txt', 5, 'Line 5 \ n') ## overwrite on line 5 **
Better to overwrite the line than to try to delete and insert // of the comments.
Thank you!
Greetings,
daniel