1.两个列表转换为字典

#encoding=utf-8

list1=["a","b","c"]
list2=[1,2,3]
d={}
for i in range(len(list1)):
    d[list1[i]]=list2[i]

print(d)

2. 使用内置函数 zip

list1=["a","b","c"]
list2=[1,2,3]
d=dict(zip(list1,list2))
print(d)

3.求一个列表中所有数据类型的次数

#encoding=utf-8
l = [5,3,"s",[6,78],{2:4},(5,7),set([8,6]),"b",-9,1.0]
d = {"int":0,"str":0,"float":0,"list":0,"tuple":0,"set":0,"dict":0,"complex":0}     #先用字典定义列表中的数据类型
for i in l:
    if isinstance(i,str):   #判断字符串类型
        d["str"]+=1
    if isinstance(i,int):   #判断整型类型
        d["int"]+=1
    if isinstance(i,float): #判断浮点类型
        d["float"]+=1
    if isinstance(i,list):
        d["list"]+=1
    if isinstance(i,set):
        d["set"]+=1
    if isinstance(i,tuple):
        d["tuple"]+=1
    if isinstance(i,dict):
        d["dict"]+=1
    if isinstance(i,complex):  #判断复数类型
        d["complex"]+=1

print(d)

4. 字典转化成列表

d = {'a': 1, 'b': 2, 'c': 3}

key = list(d.keys())
print(key)

value = list(d.values())
print(value)