Re: variable declaration
Alex Martelli wrote: [snip] > I disagree: compile time is when the compiler is running (for example, > the compiler is the component which diagnoses syntax errors, while other > errors are diagnosed ``at runtime''). [snip] That thing about syntax errors is news to me. I thought they were caught at runtime, since you can catch them as exceptions, as in: try: prijnt projnt except SyntaxError: print "See, it gets caught" If this happens at compile-time, I'd like to know how. Thanks, -- - Alexandre -- http://mail.python.org/mailman/listinfo/python-list
Re: Assigning to self
Jeff Shannon wrote: > class __Foo: > "I am a singleton!" > pass > > def Foo(foo_obj = __Foo()): > assert isinstance(foo_obj, __Foo > return foo_obj this is a bit simpler, I think, and takes advantage from Python's free name-rebinding. class Singleton(object): def __call__(self): return self Singleton = Singleton() And, now, every time you say obj = Singleton(), you're getting the same instance. Of course, this corrupt the __call__ method of the class, and isn't inheritance-safe at all, but if you want only one or two classes like this, it isn't very much work to implement it. Also, it's free of weird metaclasses, __new__s, or __dict__ hacks, I think. Just putting my two-cents into this, -- - Alexandre -- http://mail.python.org/mailman/listinfo/python-list
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