python program to return exit code 0 if passes and 1 if fails

Question

I have a text file that includes a word like "test". Now what i am trying to do is using python i am opening that text file and search for that word. If the word exists then the python program should return exit code 0 or else 1.

This is the code that i have written that returns 0 or 1.

word = "test"

def check():
    with open("tex.txt", "r") as file:
        for line_number, line in enumerate(file, start=1):  
            if word in line:

                return 0
            else:
                return 1

print(check())

output

0

what I want is I want to store this exit code in some variable so that i can pass this to a yaml file. Can someone guide me here how can i store this exit code in a variable? thanks in advance

Are you sure your code is indented properly? The way it appears here, it will always return 1 unless the word is in the first line — gimix
– gimix, Commented Nov 30, 2022 at 13:47
This program does not what is written in the descripition. return 0 immediately when the word is found in a line, but return 1 only at the end when the whole file has been read without finding the word. — VPfB
– VPfB, Commented Nov 30, 2022 at 13:49
yes i want to return 1 if the text is not found in the whole file — Zykxpython
– Zykxpython, Commented Nov 30, 2022 at 13:52

Guillaume · Accepted Answer · 2022-11-30 13:54:08Z

1

I think you are looking for sys.exit(), but since you edited your question, I am not sure anymore. Try this:

import sys

word = "test"

def check():
    with open("tex.txt", "r") as file:
        for line_number, line in enumerate(file, start=1):  
            if word in line:
                return 0
     
    return 1

is_word_found = check() # store the return value of check() in variable `is_word_found`
print(is_word_found) # prints value of `is_word_found` to standard output
sys.exit(is_word_found) # exit the program with status code `is_word_found`

BTW: as @gimix and @VPfB mentioned, your check() function did return a value immediately after it checked the first line of your file. I included a fix for that, now 1 is returned only if the word is not found is any line of your file.

edited Nov 30, 2022 at 13:54

answered Nov 30, 2022 at 13:45

Guillaume

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3 Comments

Zykxpython Over a year ago

how can i see the output?

Guillaume Over a year ago

what output do you expect?

Zykxpython Over a year ago

I want to save the return value in some variable for example a = output and then want to print the variable a

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