Hi, Here is my script :
It propose to replace some words in a file with a regular expression. It create a copy to write on it, and if there isn't an error, it delete the original by the copy with "os.rename" at the end. My problem is, if I work on a huge file, I'll try to avoid to read the file because it will be crash my computer :) and I would to verify if the regex enter by the user, exist. I don't know if it's possible, I'm looking for a solution since few hours... so sorry if the question is easy or wtf :) ------------------------------------ import re import os try: path = raw_input('Please enter the path of your file that you want to correct : \n') print("------------------------") print('Which regex ? \n') regex = raw_input('----- : ') print('By what ? \n') new_word = raw_input('----- : ') # Creating copy file filenames_regex = re.findall(r'[a-zA-Z0-9]+\.', path) filename = filenames_regex[len(filenames_regex)-1] new_filename = filename + 'copy.txt' # Replace regex by new word line by line on copy file with open(path) as rf, open(new_filename, 'w') as wf: for line in rf: wf.write(re.sub(regex, new_word, line)) except OSError: print("Permission denied") except IOError: print("This file doesn't exist") else: os.rename(new_filename, filename + 'txt') python 2.7.10 Thanks ! Best regards, François. -- https://mail.python.org/mailman/listinfo/python-list