deleting words from a file and saving the rest to the same file

May 7, 2022

I have a trivial problem

I want the words that were removed to all be uploaded to the same file where I’m making a mistake: D

infile = "tada.txt"
outfile = "tada.txt"

word = "vul"
tada=(''.join(word))

delete_list = tada
with open(infile) as fin, open(outfile, "w+") as fout:
    for line in fin:
        for word in delete_list:
            line = line.replace(word, "")
        fout.write(line)

from text

this is vul great

if there is a word vul in the file

output is

this is great

so I want the same output to be in the same file

but the problem is that the script deletes everything and the file remains empty

>Solution :

You can effectively change a file "in place" by using Python’s fileinput module. Here’s how it could be used to what you want (i.e. remove words from each line).

Note that unlike your code, the following will delete whole words not letters of one in each line.

import fileinput

filepath = "tada.txt"
delete_list = ["vul"]

with fileinput.input(files=filepath, inplace=True) as file:
    for line in file:
        words = [word for word in line.split() if word not in delete_list]
        print(' '.join(words))