The signal Module

The signal module is used to install your own signal handlers, as Example 3-11 shows. When the interpreter sees a signal, the signal handler is executed as soon as possible.

Example 3-11. Using the signal Module

File: signal-example-1.py

import signal
import time

def handler(signo, frame):
 print "got signal", signo

signal.signal(signal.SIGALRM, handler)

# wake me up in two seconds
signal.alarm(2)

now = time.time()

time.sleep(200)

print "slept for", time.time() - now, "seconds"

got signal 14
slept for 1.99262607098 seconds

Core Modules

More Standard Modules

Threads and Processes

Data Representation

File Formats

Mail and News Message Processing

Network Protocols

Internationalization

Multimedia Modules

Data Storage

Tools and Utilities

Platform-Specific Modules

Implementation Support Modules

Other Modules



Python Standard Library
Python Standard Library (Nutshell Handbooks) with
ISBN: 0596000960
EAN: 2147483647
Year: 2000
Pages: 252
Authors: Fredrik Lundh

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