理解*arg 、**kwargs

 # https://godjango.com/105-understanding-args-and-kwargs/(例子来源)
 1 def print_args(d1, d2, d3):
 2     print(d1, d2, d3)
 3 
 4 data = ('foo', 'bar', 'baz')
 5 print_args(*data) # 在data之前使用一个星号，表示让函数接受任意多的位置参数。
 6 >>> foo bar baz
 7 
 8 def print_args(*args):
 9     for arg in args:
10         print(arg)
11 print_args(1, 2, 3)
12 >>> 1
13 >>> 2
14 >>> 3
15 
16 def print_args(*args):
17     print(args)
18 print_args(1, 2, 3)
19 >>> (1, 2, 3)
20 
21 def print_args(a, b, c, *args):
22     print(a, b, c, args)
23 print_args(1, 2, 3, 4, 5)
24 >>> 1 2 3 (4, 5)
25 
26 
27 def print_kwargs(**kwargs): # 在参数名之前使用2个星号来支持任意多的关键字参数
28     print(kwargs)
29 print_kwargs(foo='bar', hello='world')
30 >>> {'foo': 'bar', 'hello': 'world'}
31 
32 def print_kwargs(latitude=None, longitude=None):
33     print(latitude, longitude)
34 
35 data = {'latitude': 0.00, 'longitude': 1.00}
36 print_data(**data)
37 >>> 0.00 1.00
38 
39 def print_kwargs(lat=None, long=None, **kwargs):
40     print(lat, long, kwargs)
41 print_kwargs(1, 2, data='other')
42 >>> 1 2 {'data': 'other'}
43 

 # http://www.runoob.com/python/python-func-super.html（例子来源）
 1 class FooParent(object):
 2     def __init__(self):
 3         self.parent = 'I\'m the parent.'
 4         print ('Parent')
 5     
 6     def bar(self,message):
 7         print ("%s from Parent" % message)
 8  
 9 class FooChild(FooParent):
10     def __init__(self):
11         # super(FooChild,self) 首先找到 FooChild 的父类（就是类 FooParent），然后把类B的对象 FooChild 转换为类 FooParent 的对象
12         super(FooChild,self).__init__()    
13         print ('Child')
14         
15     def bar(self,message):
16         super(FooChild, self).bar(message)
17         print ('Child bar fuction')
18         print (self.parent)
19  
20 if __name__ == '__main__':
21     fooChild = FooChild()
22     fooChild.bar('HelloWorld')

1 Parent
2 Child
3 HelloWorld from Parent
4 Child bar fuction
5 I'm the parent.