En Tue, 13 Nov 2007 13:09:01 -0300, Peter J. Bismuti <[EMAIL PROTECTED]> escribió:
> How is that state different depending on whether a module has been simply > imported (#2. some other block of code has __name__ == "__main__") and > the > script itself being run (#1. and having __name__=="__main__")? It's not different at all, or I don't understand the question. > Ultimately, what I want is for a module to remember (persist) the value > of A, > regardless of how the module has been loaded into the interpreter. It doesn't care. If you have a variable A in (the global namespace of) a module, it's there, no matter how the module has been loaded. A namespace has no concept of "history", it's just a mapping from names to objects. Unless you're talking about this situation (should be on the FAQ, but I can't find it): --- begin one.py --- A = 1 if __name__=='__main__': print "In one.py, A=", A import two print "In one.py, after importing two, A=", A --- end one.py --- begin two.py --- import one print "In two.py, one.A=", one.A one.A = 222 print "In two.py, after modifying one.A=", one.A --- end one.py Executing: >python one.py you get this output: In one.py, A= 1 In two.py, one.A= 1 In two.py, after modifying one.A= 222 In one.py, after importing two, A= 1 In this (pathological) case, there are TWO different instances of the one.py module, because modules are indexed by name in the sys.modules dictionary, and the first instance is under the "__main__" name, and the second instance is under the "one" name. So: don't import the main script again. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
