python标准库介绍——37 signal 模块详解

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==signal 模块==     你可以使用 ``signal`` 模块配置你自己的信号处理器 (signal handler), 如 [Example 3-11 #eg-3-11] 所示. 当解释器收到某个信号时, 信号处理器会立即执行.   ====Example 3-11. 使用 signal 模块====[eg-3-11]   ``` 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"   *B*got signal 14 slept for 1.99262607098 seconds*b* ```