hello,
I'v run into a bug that I find hard to understand:
In a python module of mine I import system modules
('sys', say) and then use them from within some functions.
However, during program termination I'm calling
one such function and the module reference ('sys')
is 'None' !
What does that mean ? Have those modules already
been unloaded ? If so, why, given that my
current module still references them ?
Any help is highly appreciated,
Stefan
2  1380 
Stefan Seefeld wrote: hello,
I'v run into a bug that I find hard to understand:
In a python module of mine I import system modules
('sys', say) and then use them from within some functions.
However, during program termination I'm calling
one such function and the module reference ('sys')
is 'None' !
Do You register Your function using atexit() ?
This works perfectly fine and as expected for me. I would wonder if the
interpreter was shut down and tries to execute a cleanup thereafter.
Checkout following example code. You may also have a look at the
/lib/atexit.py module see how it works.
import atexit
import sys
def foo():
print sys
atexit.register (foo)
Ciao,
Kay
Stefan Seefeld wrote: In a python module of mine I import system modules
('sys', say) and then use them from within some functions.
However, during program termination I'm calling
one such function and the module reference ('sys')
is 'None' !
Are you running any daemon threads? This can generally happen when a
daemon thread continues to access module globals during the interpreter
shutdown sequence. At one stage all globals in all modules are rebound
to None, and there's a chance some of your daemon thread code will
execute just as this is occurring, resulting in that kind of error message.
-Peter This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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