How to get the return value from a thread in python?

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The function foo below returns a string "foo". How can I get the value "foo" which is returned from the thread"s target?

from threading import Thread

def foo(bar):
    print("hello {}".format(bar))
    return "foo"

thread = Thread(target=foo, args=("world!",))
thread.start()
return_value = thread.join()

The "one obvious way to do it", shown above, doesn"t work: thread.join() returned None.

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We hope this article has helped you to resolve the problem. Apart from How to get the return value from a thread in python?, check other _thread Python module-related topics.

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