@@ -22,29 +22,26 @@ def __lt__(self, other):
2222print ("\t " .join ([str (item ) for item in sorted ([People ("abc" , 18 ), People ("abe" , 19 ), People ("abe" , 12 ), People ("abc" , 17 )])]))
2323
2424
25- # Python实现任意深度的赋值 例如a[0] = 'value1'; a[0 ][2] = 'value2'; a[0][2][3 ] = 'value3',构造出一颗多叉树类似结构
25+ # Python实现任意深度的赋值 例如a[0] = 'value1'; a[1 ][2] = 'value2'; a[3][4][5 ] = 'value3'
2626class MyDict (dict ):
27- def __init__ (self ,name = '' ): # 增加初始化函数,将需要放置的value存储到内部中
28- self .name = name
29- def __str__ (self ): # 增加 __str__ 函数,将存储的元素输出出来
30- return self .name
27+
3128 def __setitem__ (self , key , value ): # 该函数不做任何改动 这里只是为了输出
3229 print ("setitem:" , key , value , self )
33- temp = MyDict (value )
34- super (MyDict ,self ).__setitem__ (key , temp )
30+ super ().__setitem__ (key , value )
3531 return
3632
3733 def __getitem__ (self , item ): # 主要技巧在该函数
3834 print ("getitem:" , item , self )
3935 # 基本思路: a[1][2]赋值时 需要先取出a[1] 然后给a[1]的[2]赋值
4036 if item not in self : # 如果a[1]不存在
41- temp = MyDict (item ) # 则需要新建一个dict
42- super (MyDict , self ).__setitem__ (item , temp ) # 并使得a[1] = dict
37+ temp = MyDict () # 则需要新建一个dict
38+ super ().__setitem__ (item , temp ) # 并使得a[1] = dict
4339 return temp # 返回a[1] 使得a[1][2] = value有效
44- return super (MyDict , self ).__getitem__ (item ) # 如果a[1]存在 则直接返回a[1]
40+ return super ().__getitem__ (item ) # 如果a[1]存在 则直接返回a[1]
4541
4642# 使用例子:
4743test = MyDict ()
4844test [0 ] = 'test'
49- test [0 ][2 ] = 'test1'
50- test [0 ][2 ][5 ] = 'test2'
45+ test [1 ][2 ] = 'test1'
46+ test [3 ][4 ][5 ] = 'test2'
47+ print ("==========================" )
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