#创建原始字典
cities_dict = {'Beijing': {'Capital': 'China'},'Moscow': {'Capital': 'Russia'},'Paris': {'Capital': 'France'}}
#遍历字典
for i in sorted(cities_dict.keys()):
    #遍历字典键值
    for k in cities_dict[i]:
        #输出时注意格式化，中间字母涉及变换大写首字母(lower()首字母换小写)
        print(f"{i} is the {k.lower()} of {cities_dict[i][k]}!")