Threads and import

[Diez B. Roggisch]

rsoh.woodhouse at googlemail.com schrieb:
> On May 28, 8:52 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>> rsoh.woodho... at googlemail.com schrieb:
>>
>>
>>
>>> On May 28, 8:26 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>>>> rsoh.woodho... at googlemail.com schrieb:
>>>>> Hi,
>>>>> I'm trying to work out some strange (to me) behaviour that I see when
>>>>> running a python script in two different ways (I've inherited some
>>>>> code that needs to be maintained and integrated with another lump of
>>>>> code). The sample script is:
>>>>> # Sample script, simply create a new thread and run a
>>>>> # regular expression match in it.
>>>>> import re
>>>>> import threading
>>>>> class TestThread(threading.Thread):
>>>>>     def run(self):
>>>>>         print('start')
>>>>>         try:
>>>>>             re.search('mmm', 'mmmm')
>>>>>         except Exception, e:
>>>>>             print e
>>>>>         print('finish')
>>>>> tmpThread = TestThread()
>>>>> tmpThread.start()
>>>>> tmpThread.join()
>>>>> import time
>>>>> for i in range(10):
>>>>>     time.sleep(0.5)
>>>>>     print i
>>>>> # end of sample script
>>>>> Now if I run this using:
>>>>> $ python ThreadTest.py
>>>>> then it behaves as expected, ie an output like:
>>>>> start
>>>>> finish
>>>>> 0
>>>>> 1
>>>>> 2
>>>>> ...
>>>>> But if I run it as follows (how the inherited code was started):
>>>>> $ python -c "import TestThread"
>>>>> then I just get:
>>>>> start
>>>>> I know how to get around the problem but could someone with more
>>>>> knowledge of how python works explain why this is the case?
>>>> Works for me. And I don't see any reason why it shouldn't for you -
>>>> unless you didn't show us the actual code.
>>>> Diez
>>> Strange. That is the code exactly as I run it using python 2.4.4 2.5.1
>>> on Ubuntu 7.10. Which version of python/what platform were you using?
>> mac-dir:/tmp deets$ python
>> Python 2.5.1 (r251:54869, Apr 18 2007, 22:08:04)
>> [GCC 4.0.1 (Apple Computer, Inc. build 5367)] on darwin
>> Type "help", "copyright", "credits" or "license" for more information.
>> Welcome to rlcompleter2 0.96
>> for nice experiences hit <tab> multiple times
>>  >>>
>>
>> But I doubt this changes anything.
>>
>> Diez
> 
> Hmm. Just tested it again on OS X Python 2.4.4 and custom build of
> Python 2.4.5 on Debian and get the same results as I had before.

Are you sure that ThreadTest isn't a somewhere else installed module? 
youc can use python -v to check where python gets it's files.

and how about you attach/paste the full script somewhere?

Diez