How to exit a python script in an if statement

54.3K Asked by ClareMatthews in Python , Asked on Jul 27, 2021

I'm using Python 3.2 and trying to exit it after the user inputs that they don't want to continue, is there code that will exit it in an if statement inside a while loop? I've already tried using exit(), sys.exit(), sys.quit(), quit(), and raise SystemExit

Answered by Deepa bhawana

To stop code execution in Python you first need to import the sys object. After this, you can then call the exit() method to stop the program from running.

You can follow this:

while True:

   answer = input('Do you want to continue?:')

   if answer.lower().startswith("y"):

      print("ok, carry on then")

   elif answer.lower().startswith("n"):

      print("ok, sayonnara")

      exit()

edit: use input in python 3.2 instead of raw_input

Your Answer

Answers (2)

Ranjana

If you’re trying to exit a Python script when a condition in an if statement is met, there are a few ways to do it. Here’s how you can handle it:

Use sys.exit():

Import the sys module and call sys.exit() to exit the script. This is one of the most common ways to terminate a program.

  import sysif some_condition:    print("Exiting the script...")    sys.exit()

You can optionally pass an exit code (e.g., sys.exit(1)) to indicate an error or sys.exit(0) for a normal exit.

Use quit() or exit():

These are built-in functions and work similarly to sys.exit().

  if some_condition:    print("Quitting the script...")    quit()

However, these are intended for use in interactive sessions, so using sys.exit() in production code is generally preferred.

Use raise SystemExit:

This raises the SystemExit exception directly, which stops the script.

  if some_condition:    print("Raising SystemExit...")    raise SystemExit

Best Practices:

Always ensure that exiting the script is the right approach. It’s generally better to handle conditions gracefully unless an immediate termination is necessary.
Add meaningful messages or logging before exiting so users know why the script stopped.

By using any of these methods, you can cleanly exit your Python script when an if condition is met. Let me know if you’d like to dive into more details!

1 Day

Ranjana

To exit a Python script within an if statement, you can use the sys.exit() function from the sys module. This function terminates the script and returns an optional status code.

Here's an example:

import sys

# Your if statement

if condition:

    print("Exiting the script")

    sys.exit()  # Exiting the script here

# Code continues here if condition is not met

print("Script continues after the if statement")

Make sure to import the sys module at the beginning of your script. When sys.exit() is called, the script will terminate immediately, and any code following the call will not be executed.

9 Months