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
# 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)
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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