[Python-Dev] (no subject)

[Stefan Spoettl]

Using:Python 2.7.0+ (r27:82500, Sep 15 2010, 18:14:55) [GCC 4.4.5] on linux2(Ubuntu 10.10)
Method to reproduce error:
1. Defining a module which is later imported by another:
---------------------------------------------------------------------
class SomeThing:
    def __init__(self):        self.variable = 'Where is my bytecode?'
    def deliver(self):        return self.variable

if __name__ == '__main__':    obj = SomeThing()    print obj.deliver()
---------------------------------------------------------------------
2. Run this module:Output of the Python Shell: Where is my bytecode?                                                   >>>
3. Defining the importing module:
---------------------------------------------------------------------
class UseSomeThing:
    def __init__(self, something):        self.anything = something
    def giveanything(self):        return self.anything

if __name__ == '__main__':    anything = UseSomeThing(SomeThing.SomeThing().deliver()).giveanything()    print anything
---------------------------------------------------------------------
4. Run this module:Output of the Python Shell: Where is my bytecode                                                    >>>(One can find SomeThing.pyc on the disc.)
5. Changing the imported module:
---------------------------------------------------------------------class SomeThing:    def __init__(self):        self.variable = 'What the hell is this? It could not be Python!'    def deliver(self):        return self.variableif __name__ == '__main__':    obj = SomeThing()    print obj.deliver()---------------------------------------------------------------------
6. Run the changed module:Output of the Python Shell: What the hell is this? It could not be Python!                                                   >>>
7. Run the importing module again:Output of the Python Shell: Where is my bytecode?                                                   >>>8. Deleting the bytecode of the imported module makes no effect!
Remark: I think that I have observed yesterday late night a similar effect on Windows XPwith Python 2.7.1 and Python 3.1.3. But when I have tried it out today in the morning theerror hasn't appeared. So it may be that the Python interpreter isn't working correctly onlyon Ubuntu 10.10. 		 	   		  
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