I am getting a strange error with this script:
$ cat doctest-threads.py
"""
>>> import time, threading
>>> def example():
... thread.out = []
... while thread.running:
... time.sleep(.01)
... thread.out.append(".")
>>> thread = threading.Thread(None, example)
>>> thread.running = True; thread.start()
>>> time.sleep(.1)
>>> thread.running = False
>>> print thread.out
['.', '.', '.', '.', '.', '.', '.', '.', '.']
"""
if __name__ == "__main__":
import doctest; doctest.testmod()
$ python doctest-threads.py
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python2.4/threading.py", line 442, in __bootstrap
self.run()
File "/usr/lib/python2.4/threading.py", line 422, in run
self.__target(*self.__args, **self.__kwargs)
File "<doctest __main__[1]>", line 5, in example
NameError: global name 'thread' is not defined
I have found out a workaround, putting 'thread' in the main program
(i.e.
in the globals):
$ cat doctest-threads2.py
"""
>>> thread.running = True
>>> thread.start()
>>> time.sleep(.1)
>>> thread.running = False
>>> print thread.out
['.', '.', '.', '.', '.', '.', '.', '.', '.']
"""
import time, threading
def example():
thread.out = []
while thread.running:
time.sleep(.01)
thread.out.append(".")
thread = threading.Thread(None, example)
if __name__ == "__main__":
import doctest; doctest.testmod()
However this is strange, since replacing in the first script
>>> globals()["thread"] = threading.Thread(None, example)
does NOT work, so it is not just putting stuff in the globals.
Also, it seems that I cannot reproduce the same error in absense of
threads.
Any idea of what is happening?
Thanks for sharing,
Michele Simionato
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