On 10/09/2012 11:36 AM, Michele Simionato wrote: > On Tuesday, October 9, 2012 5:24:17 PM UTC+2, Peter Otten wrote: >> Seriously, you shouldn't use the main script as a library; it is put into >> >> the sys.modules cache under the "__main__" key. Subsequent imports under its >> >> real name will not find that name in the cache and import another instance >> >> of the module, with puzzling effects > Actually I usually never use the main script as a library, this is why I > never experience this puzzling behavior before. But now it is clear, thanks. More generally, you should arrange your imports so that there are no cycles. If module/script "a" imports "b", directly or indirectly, "b" should not try to import "a." Move the common code to a third place, and import it from both "a" and from "b".
The other symptoms you can get are more subtle than this one, but just as surprising. -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
