将城市名称映射到国家- python？

import pandas as pd
from geopy.geocoders import Nominatim

cities = ['北京', '上海', '纽约', '伦敦', '巴黎']

df = pd.DataFrame(columns=['City', 'Country'])

geolocator = Nominatim(user_agent="my_app")

for city in cities:
    location = geolocator.geocode(city)
    country = location.raw['address']['country']
    df = df.append({'City': city, 'Country': country}, ignore_index=True)

print(df)