[Pythonmac-SIG] Re: urllib and ftplib hang in bundle but not
when run directly
mwh at python.net
Fri May 14 06:56:24 EDT 2004
"Russell E. Owen" <rowen at cesmail.net> writes:
> In article <rowen-C76C8E.09571605052004 at sea.gmane.org>,
> "Russell E. Owen" <rowen at cesmail.net> wrote:
>>I am having trouble with some ftp code. On some platforms it works fine
>>and on others it reliably hangs....(including MacOS X command-line
>>it works, but a bundled app version of the identical code fails)
> After some experimentation, I found the hanging was occurring in ftplib.
> It delays importing re and compiling two regular expressions until they
> are needed, and the thread hangs both on the import and (if I modify
> ftplib to import re in advance) on the compilation. Modifying ftplib to
> do both jobs in advance (when first imported) fixes the problem.
Um. Python has an 'import lock' so only one thread can be importing a
module at the same time.
Do you have code like this:
i.e. that does things as a result of being imported? You should stop
well, take it from an old hand: the only reason it would be easier
to program in C is that you can't easily express complex problems
in C, so you don't. -- Erik Naggum, comp.lang.lisp
More information about the Pythonmac-SIG