题解 | #首都#

mark一下，不理解这个题目
"""
# 重新整理的字典
cities_dict = {'Beijing':'China','Moscow':'Russia','Paris':'France'}
for i in sorted(cities_dict):
    print(f'{i} is the capital of {cities_dict[i]}!')
"""
# 典中典
cities_dict = {'Beijing': {'Capital': 'China'},
'Moscow': {'Capital': 'Russia'},
'Paris': {'Capital': 'France'}}
for i in sorted(cities_dict.keys()):
    print(f"{i} is the capital of {cities_dict[i]['Capital']}!")  # 一个单引号跟双引号有什么区别？不理解？