Python's method of implementing global variables through function attributes

The example in this article describes how Python implements global variables through function properties. Share to everyone for your reference. The specific analysis is as follows:

Python functions can define attributes and are global, and this works very well, for example, for numeric accumulation, you don't have to specifically define a global variable, you can use the properties of a function.

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def add (x=1): Try:add.sum + = x except AttributeError:add.sum = x return add.sum print Add (3) print Add (4) print Add (10) Class Ax (object): Def __init__ (self, val=0): Self.sum = Val def __call__ (self, x=1): Self.sum + = x return self.sum add = Ax () print Add (3) print Add (4) print Add (10)

I hope this article will help you with your Python programming.