How do you replace a word after a match from a list of words in each line of a file?

[baquerik]

Hello vijjuu,

there are so many stars in your output because this line of code returns nothing and every character is then a match

list1 = re.compile(r'%s\s+((?:\w+(?:\s+!$)) {1})' %checkWords[i]).findall(line)

There must be way better ways of doing this, but this code gives the output you were asking for:

f1=open('testinput.txt', 'r')
f2=open('testoutput.txt', 'w')
checkWords = ["Manager","Director"]
repWords = ("*")
 
for line in f1:
    words = line.split(" ")
    for i in range(len(words)):
        for checkword in checkWords:
            if words[i] == checkword:
            	words[i+1] = repWords
    newline = ""
    for word in words:
        newline = newline + word + " "
    print(newline)
    f2.write(newline)
f1.close()
f2.close()

Output:
This is Manager * speaking.Hello, how are you? I am Fine. this is Director * Nice to Meet you Manager *

Problems: It does not "understand" what a word is, so if punctuation symbols are involved (in the matched word or in the replacement) it fails.