1. 遍历key
dic = {'a': '1', 'b': '2', 'c': '3'}
for key in dic:
print(dic[key])
#另一种方式, 更直白
for key in dic.keys():
print(key)
2. 遍历value
dic = {'a': '1', 'b': '2', 'c': '3'}
for value in dic.values():
print(value)
3.遍历字典项
dic = {'a': '1', 'b': '2', 'c': '3'}
for item in dic.items():
print(item)
#返回元组
('a', '1')
('b', '2')
('c', '3')
4. 同时遍历key和value
for key,value in dic.items():
print(key + ':' + value)