python的參數

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*args, **kwargs的理解：

>>> def foo(*args, **kwargs):...     print ‘args = ‘, args...     print ‘kwargs = ‘, kwargs...     print ‘---------------------------------------‘... >>> if __name__ == ‘__main__‘:...     foo(1,2,3,4)...     foo(a=1,b=2,c=3)...     foo(1,2,3,4, a=1,b=2,c=3)...     foo(‘a‘, 1, None, a=1, b=‘2‘, c=3)... args =  (1, 2, 3, 4)kwargs =  {}---------------------------------------args =  ()kwargs =  {‘a‘: 1, ‘c‘: 3, ‘b‘: 2}---------------------------------------args =  (1, 2, 3, 4)kwargs =  {‘a‘: 1, ‘c‘: 3, ‘b‘: 2}---------------------------------------args =  (‘a‘, 1, None)kwargs =  {‘a‘: 1, ‘c‘: 3, ‘b‘: ‘2‘}---------------------------------------

 

python的參數