resas.py

import requests
import json


class Resas:
    __ENDPOINT = "https://opendata.resas-portal.go.jp/"
    __API_VER = "api/v1-rc.1/"
    __address = ""

    def __init__(self, api_key):
        self.api_key = api_key
        self.headers = {"X-API-KEY": api_key}
        self.pref = {}
        self.__address = self.__ENDPOINT + self.__API_VER

    def __get_result(self, address):
        url = self.__ENDPOINT + self.__API_VER + address
        response = requests.get(url, headers=self.headers)
        result = json.loads(response.text)["result"]
        return result

    def get_data(self, api_name, param):
        p = "?"
        for k, v in param.items():
            p = p + k + "=" + str(v) + "&"

        if len(p) == 2:
            p = ""
        else:
            p = p[0:len(p) - 1]

        address = api_name + p

        result = self.__get_result(address)

        return result

    def load_pref(self):
        address = "prefectures"

        result = self.__get_result(address)

        dic = {}
        for r in result:
            dic[r['prefName']] = r['prefCode']

        self.pref = dic

    def get_city(self, pref_code):
        address = "cities?prefCode=" + str(pref_code)

        result = self.__get_result(address)

        dic = {}
        for r in result:
            dic[r['cityName']] = r['cityCode']

        return dic


resas = Resas("") #APIキーを入れてinitializeします。

resas.load_pref()
pref_code = resas.pref['東京都']
print(pref_code)

city = resas.get_city(pref_code)

city_code = city['渋谷区']
print(city_code)

param = {'prefCode': pref_code, 'cityCode': city_code}
results = resas.get_data("municipality/foundation/perYear", param)
print(results)