python 中字典实用操作

1、字典转化为列表

a={"username":"12","password":"89"}

print a.items()

运行结果：》》》

[('username', '12'), ('password', '89')]

2、字典转化为字符串

a={"username":"12","password":"89"}

for key,val in a.items():

　　print ky,val

运行结果：》》》

username 12
password 89

3、两个列表合并为一个列表并转化为字典

a=["a,b,c,d","1,2,3,4","sad,good,apple,goal","wqqw"]
b=["1.3","2.3","2.9","5.6"]

c=dict(zip(a,b))

print zip(a,b)
print c

运行结果：》》》

[('a,b,c,d', '1.3'), ('1,2,3,4', '2.3'), ('sad,good,apple,goal', '2.9'), ('wqqw', '5.6')]
{'wqqw': '5.6', '1,2,3,4': '2.3', 'sad,good,apple,goal': '2.9', 'a,b,c,d': '1.3'}