Skip to content
Related Articles

Related Articles

Improve Article
Save Article
Like Article

Python | os._exit() method

  • Last Updated : 26 Aug, 2019

OS module in Python provides functions for interacting with the operating system. OS comes under Python’s standard utility modules. This module provides a portable way of using operating system dependent functionality.

os._exit() method in Python is used to exit the process with specified status without without calling cleanup handlers, flushing stdio buffers, etc.

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning - Basic Level Course

Note: This method is normally used in child process after os.fork() system call. The standard way to exit the process is sys.exit(n) method.



Syntax: os._exit(status)

Parameter:
status: An integer value or above defined values representing the exit status.

Return type: This method does not return any value in the calling process.

Code: Use of os._exit() method




# Python program to explain os._exit() method 
  
# importing os module  
import os
  
# Create a child process
# using os.fork() method 
pid = os.fork()
  
  
# pid greater than 0
# indicates the parent process 
if pid > 0:
  
    print("\nIn parent process")
    # Wait for the completion 
    # of child process and    
    # get its pid and 
    # exit status indication using
    # os.wait() method
    info = os.waitpid(pid, 0)
  
      
    # os.waitpid() method returns a tuple
    # first attribute represents child's pid
    # while second one represents
    # exit status indication
  
    # Get the Exit code 
    # used by the child process
    # in os._exit() method
      
    # firstly check if
    # os.WIFEXITED() is True or not
    if os.WIFEXITED(info[1]) :
        code = os.WEXITSTATUS(info[1])
        print("Child's exit code:", code)
  
else :
    print("In child process")
    print("Process ID:", os.getpid())
    print("Hello ! Geeks")
    print("Child exiting..")
      
    # Exit with status os.EX_OK
    # using os._exit() method
    # The value of os.EX_OK is 0        
    os._exit(os.EX_OK)
Output:
In child process
Process ID: 15240
Hello! Geeks
Child exiting..


In parent process
Child's exit code: 0

References: https://docs.python.org/3/library/os.html#os._exit




My Personal Notes arrow_drop_up
Recommended Articles
Page :