On Fri, Oct 24, 2008 at 1:07 PM, Stefan Seefeld <[EMAIL PROTECTED]>wrote:
> Robert Dailey wrote: > >> Hi, >> >> What happens if I do the following? >> >> using namespace boost::python; >> >> import( "__main__" ).attr( "new_global" ) = 40.0f; >> import( "__main__" ).attr( "another_global" ) = 100.0f: >> >> >> My main concern here is performance. I'm wondering if each call to >> import() results in a disk query for the script in question and loads it >> from there. I'm also wondering if the second import() above will simply >> read from a memory cache or something. >> > > As the above code is only a wrapper around the Python runtime, you are > really asking about how Python handles repeated 'import' calls. I'm pretty > sure importing a module while it is already imported will do (almost) > nothing. However, I'm not sure whether a module is actually unloaded as soon > as the last reference goes away (such as after the first line above is > completed), so I can't give a definite answer. > > I'm sure you'll get better answers when asking on a Python forum directly. I posted about this on the Python mailing list but I'm receiving no responses :(
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