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 calling cleanup handlers, flushing stdio buffers, etc. 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
Python3
# Python program to explain os._exit() method# importing os module import os# Create a child process# using os.fork() methodpid = os.fork()# pid greater than 0# indicates the parent processif 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) |
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
