相关疑难解决方法(0)

#!/usr/bin/python3.2
import sys

def match_text(pattern):
    line = (yield)
    if pattern in line:
        print(line)

x = match_text('apple')
x.next()

for line in input('>>>> '):
    if x.send(line):
        print(line)

x.close()

这是一个协程,但Python3.2将其视为生成器 - 为什么？这里发生了什么？我指的是David Beazeley编写的Python Essential Reference:20.

引用相关部分:

Normally, functions operate on a single set of input arguments. However, a function can
also be written to operate as a task that processes a sequence of inputs sent to
it.This type of function is known as a coroutine and is created by using the yield 
statement …

我正在尝试分析一个实例方法,所以我做了类似的事情:

import cProfile

class Test():

    def __init__(self):
        pass

    def method(self):
        cProfile.runctx("self.method_actual()", globals(), locals())

    def method_actual(self):
        print "Run"

if __name__ == "__main__":
    Test().method()

但是现在当我希望"method"返回由"method_actual"计算的值时出现问题.我真的不想两次调用"method_actual".

还有其他方法,可以线程安全吗？(在我的应用程序中,cProfile数据被保存到由其中一个args命名的数据文件中,因此它们不会被破坏,我可以在以后组合它们.)