Can't find my file with with open(filename, 'w') on Windows

Question

I'm studying python at school and I would like to test some scripts. However, the computers at school use Linux but at home I use Windows. I find my solution to practice at home but at least, my only problem is when I use with open to create a file in Python.

The program works fine because I verify the correction at school but I can't find my file on my computer.

The program I work on is to clean a text without space or "#" so I just put the list lines here :

with open(deck, 'r') as data: 
    with open('output.txt', 'w') as output: 
        for line in data: 
            if (not ligne_commentee(line)) and (not ligne_vide(line)):
                output.write(supprime_caracteres_commentes(line))

PS : I'm french, so the names of the file are in french...

Deck is deck = "C:\\Users\\CHLOE\\Desktop\\mes\\texte_test.txt" .

This is how I can read my file but I don't find a solution to find the find I create with output.write() .

Can you help me ? Thank you !

Answer 1

Since you didn't specify an absolute path for output like you did with deck , Python creates output.txt based on your current directory (which will always differ based on where you are running the script).

Put in an absolute path for output.txt :

with open('C:\\Users\\CHLOE\\Desktop\\mes\\output.txt', 'w') as output: 

# ... rest of your code

If output.txt is always relative to your deck input, you can also do this:

import os

output_path = os.path.dirname(deck)
with open(deck, 'r') as data: 
    with open(os.path.join(output_path, 'output.txt'), 'w') as output:

# ... rest of your code