Python | os.wait() 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.wait() method in Python is used by a process to wait for completion of a child process.
This method returns a tuple containing its PID and exit status indication. The exit status of child process is indicated by a 16 bit number whose lower byte is the signal number that killed the process and higher byte is the exit status (if the signal number is zero).
Syntax: os.wait()
Parameter: No parameter is required.
Return type: This method returns a tuple which contains terminated child’s PID and exit status indication.
Code: Use of os.wait() method
import os
pid = os.fork()
if pid :
status = os.wait()
print("\nIn parent process-")
print("Terminated child's process id:", status[0])
print("Signal number that killed the child process:", status[1])
else :
print("In Child process-")
print("Process ID:", os.getpid())
print("Hello ! Geeks")
print("Exiting")
|
Output:
In Child process-
Process ID: 6276
Hello! Geeks
Exiting
In parent process-
Terminated child's process id: 6276
Signal number that killed the child process: 0
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