1 #语法

2 dic= {"name":"alex","age":33,"job":"IT"}#结构k：v，k：v

3 dic1 = {"tya":"ret","set":2453}4 #查：

5 dic["name"]6 dic.get('name')7

8 #添加：

9 dic['gender'] = 'female'

10

11 #改：

12 dic["name"] = "laf"

13

14 #删：

15 del dic["name"]16

17 #其他

18 dic.update(dic1)#更新字典，去重

19 dic.items()#转换成列表

20 dic.values()#打印所有values值

21 dic.keys()#打印所有的key值

22

23 print("name" in dic)#判断key是否在字典里面返回True or Flase

24 dic.setdefault("ct")#存在返回值，不存在自动生成k，v

25 dic.fromkeys([1,2,3,4,5,6],'ddd')#把列表里面的数字当做key，后面当成v

26 for key indic:27 print(key,dic[key])28

29 #字典里面套字典

30 id_db ={31 371481199306143632:{32 'name':'xiaoli',33 'age':22,34 'addr':'shandong'

35 },36 371481199306143633:{37 'name':'xiaoly',38 'age':22,39 'addr':'shandong'

40 }41 }42

43 classdict(object):44 """

45 dict() -> new empty dictionary46 dict(mapping) -> new dictionary initialized from a mapping object's47 (key, value) pairs48 dict(iterable) -> new dictionary initialized as if via:49 d = {}50 for k, v in iterable:51 d[k] = v52 dict(**kwargs) -> new dictionary initialized with the name=value pairs#成对出现53 in the keyword argument list. For example: dict(one=1, two=2)54 """

55 def clear(self): #real signature unknown; restored from __doc__#清除

56 """D.clear() -> None. Remove all items from D."""

57 pass

58

59 def copy(self): #real signature unknown; restored from __doc__#复制

60 """D.copy() -> a shallow copy of D"""

61 pass

62

63 @staticmethod #known case

64 def fromkeys(*args, **kwargs): #real signature unknown

65 """Returns a new dict with keys from iterable and values equal to value."""

66 pass

67

68 def get(self, k, d=None): #real signature unknown; restored from __doc__#得到值

69 """D.get(k[,d]) -> D[k] if k in D, else d. d defaults to None."""

70 pass

71

72 def items(self): #real signature unknown; restored from __doc__#转换成列表

73 """D.items() -> a set-like object providing a view on D's items"""

74 pass

75

76 def keys(self): #real signature unknown; restored from __doc__#得到字典里所有的key

77 """D.keys() -> a set-like object providing a view on D's keys"""

78 pass

79

80 def pop(self, k, d=None): #real signature unknown; restored from __doc__#删除

81 """

82 D.pop(k[,d]) -> v, remove specified key and return the corresponding value.83 If key is not found, d is returned if given, otherwise KeyError is raised84 """

85 pass

86

87 def popitem(self): #real signature unknown; restored from __doc__

88 """

89 D.popitem() -> (k, v), remove and return some (key, value) pair as a90 2-tuple; but raise KeyError if D is empty.91 """

92 pass

93

94 def setdefault(self, k, d=None): #real signature unknown; restored from __doc__

95 """D.setdefault(k[,d]) -> D.get(k,d), also set D[k]=d if k not in D"""

96 pass

97

98 def update(self, E=None, **F): #known special case of dict.update#更新

99 """

100 D.update([E, ]**F) -> None. Update D from dict/iterable E and F.101 If E is present and has a .keys() method, then does: for k in E: D[k] = E[k]102 If E is present and lacks a .keys() method, then does: for k, v in E: D[k] = v103 In either case, this is followed by: for k in F: D[k] = F[k]104 """

105 pass

106

107 def values(self): #real signature unknown; restored from __doc__#取字典里所有values

108 """D.values() -> an object providing a view on D's values"""

109 pass