https://blog.csdn.net/maliao1123/article/details/52152989

*args是非關(guān)鍵字參數(shù)，用于元組，**kw是關(guān)鍵字參數(shù)，用于字典

            
              def foo(*args, **kwargs): 
     print('args = ', args)
     print 'kwargs = ', kwargs)


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)

#輸出結(jié)果如下：

args =? (1, 2, 3, 4)?
kwargs =? {}?
---------------------------------------?
args =? ()?
kwargs =? {'a': 1, 'c': 3, 'b': 2}?
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args =? (1, 2, 3, 4)?
kwargs =? {'a': 1, 'c': 3, 'b': 2}?
---------------------------------------?
args =? ('a', 1, None)?
kwargs =? {'a': 1, 'c': 3, 'b': '2'}?
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