Ethan Furman wrote: > Steve Holden wrote: >> Brian Allen Vanderburg II wrote: >> >>> bock...@virgilio.it wrote: >>> >>>> Constants would be a nice addition in python, sure enough. >>>> But I'm not sure that this can be done without a run-time check every >>>> time >>>> the constant is used, and python is already slow enough. Maybe a check >>>> that is disabled when running with optimizing flags ? >>>> >>>> But I'm sure this discussion has been already made and the FINAL >>>> WORD has >>>> been already spoken. >>>> >>>> Ciao >>>> ---- >>>> FB >>> >>> One idea to make constants possible would be to extend properties to be >>> able to exist at the module level as well as the class level: >>> >>> @property >>> def pi(): >>> return 3.14159..... >>> >>> print(pi) # prints 3.14159.... >>> pi=32 # Raise an error Cannot set attribute ... >>> >> >> I don't understand why this would print 3.14159 ... instead of <function >> __math__.pi>, or whatever. >> >> property would clearly have to do something very different in module >> scope in order to make this work. >> >> regards >> Steve > > --> class tester(object): > ... @property > ... def pi(self): > ... return 3.141596 > ... > --> testee = tester() > --> testee.pi > 3.1415959999999998 > > Looks like that's how property works, so the same behavior on a module > level would do as Brian suggests.
But that's at the class level, not the module level. regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
