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Message: [QUOTE="jean-marc, post: 1819902"] As an application programmer, I'm not well versed in the material aspects of computing (memory, cpu, bus and all). My understanding of imports in Python is such: the __main__ program is the center piece which holds the programs reference: globals, functions, classes, modules etc. The objects of this file (functions and classes) are directly accessible; 'import suchModule' s objects are attainable through the *qualified name* (module.function); the 'from suchModule import *' the objects are directly attainable. A recent msg from F. Lundh [URL]http://groups.google.ca/group/comp.lang.python/browse_frm/thread/f9bf9734fa19eee9/8a51ab24748251d8?q=&rnum=12&hl=en#8a51ab24748251d8[/URL] suggested being careful with recursive importing... BUT, of all this I thought that if you import module1, then module2 (into __main__), objects from module1 would be available to objects of module2 which came (into memory space) after module1 was loaded. This does not seem to be the case, and module2 requires an 'import module1' statement in its own file to see this last module's objects. This is not the recursive situation that was a pitfall Fredrik was evoking. What am I missing here??? The reason I'm asking is to setup team development, using Tkinter, where different people will be programming diverse sections to be 'packed' into the main interface... Thanks for any help in understanding what is happening in this situation, JMD [/QUOTE]