python协程用法实例分析

WBOY
Release: 2016-06-10 15:10:50
Original
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本文实例讲述了python协程用法。分享给大家供大家参考。具体如下:

把函数编写为一个任务,从而能处理发送给他的一系列输入,这种函数称为协程

def print_matchs(matchtext):
  print "looking for",matchtext
  while True:
    line = (yield)
    #用 yield语句并以表达式(yield)的形式创建协程
    if matchtext in line:
      print line
>>> matcher = print_matchs('python')
>>> matcher.next()
looking for python
>>> matcher.send('hello python')#看生成器那片,关于send()跟next()的区别
hello python
>>> matcher.send('test')
>>> matcher.send('python is cool')
python is cool
>>>matcher.close()

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希望本文所述对大家的Python程序设计有所帮助。

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