python-2.7 - python simpy错误返回生成器内部的值

Question

运行以下代码时出现错误

File "simpy.py", line 4
    return 'Monty Pythons Flying Circus'
SyntaxError: 'return' with argument inside generator

这是一个code sample from simpy official site

我尝试了this solution given to a similar looking question，但随后出现以下错误:

Invalid yield value "Monty Pythons Flying Circus"

来自simpy网站的代码:

import simpy
def my_proc(env):
  yield env.timeout(1)
  return 'Monty Pythons Flying Circus'

env = simpy.Environment()
proc = env.process(my_proc(env))
env.run(until=proc)

我按照上面引用的解决方案尝试过的修改后的代码如下:

import simpy
def my_proc(env):
  yield env.timeout(1)
  yield 'Monty Pythons Flying Circus'
  return
env = simpy.Environment()
proc = env.process(my_proc(env))
env.run(until=proc)

此代码给出了错误Invalid yield value "Monty Pythons Flying Circus"
如何解决这个问题？

Answer 1

我遇到了同样的错误，并将其跟踪到代码here
读取Process类的代码和文档字符串:

A generator (also known as a coroutine) can suspend its execution by yielding an event. Process will take care of resuming the generator with the value of that event once it has happened.

我了解问题是您没有产生事件，而是一个字符串