find and replace multiple words in a file python

Question

I took example code from here.

f1 = open(\'file1.txt\', \'r\')
f2 = open(\'file2.txt\', \'w\')
for line in f1:
    f2.write(line.replace(\'old_text\', \'new         


        

Answer 1

I've learned that this script works very well and much faster then the ones that i've used in the past.

import re

def word_replace(text, replace_dict):
rc = re.compile(r"[A-Za-z_]\w*")

def translate(match):
    word = match.group(0).lower()
    print(word)
    return replace_dict.get(word, word)

return rc.sub(translate, text)

old_text = open('YOUR_FILE').read()

replace_dict = {
"old_word1" : 'new_word1',
"old_word2" : 'new_word2',
"old_word3" : 'new_word3',
"old_word4" : 'new_word4',
"old_word5" : 'new_word5'

 }                            # {"words_to_find" : 'word_to_replace'}

output = word_replace(old_text, replace_dict)
f = open("YOUR_FILE", 'w')                   #what file you want to write to
f.write(output)                              #write to the file
print(output)                                #check that it worked in the console