import requests url = 'https://opendata.resas-portal.go.jp/api/v1/prefectures' KEY = 'QTPchshTtS5JGmrEw0ELladqSbGwnKxh5KVqmZvU' query = {'X-API-KEY': KEY} r = requests.get(url, headers=query) m=r.text print(m)