pip install requests

class LocationSearch(object):

    def __init__(self, keyword: str):
        self.keyword = keyword
        self.key = '你的Key'
        self.sk = '你的校验sk'
        self.url = (
            'https://apis.map.qq.com/ws/place/v1/search?'
            'boundary=region({},0)&key={}&keyword={}'
            '&page_index={}&page_size=20'
        )

def request_data(self, location: str, page: int):
    """
    请求接口数据
    Arguments:
        location {str} -- 地点
        page {int} -- 第几页
    
    Returns:
        {list} -- 该页该地点的数据
        {int} -- 该地点结果总数
    """
    # 拼接链接
    url = self.url.format(location, self.key, self.keyword, page)
    # 获得数字签名，并将签名加到链接后面进行请求
    wait_sig = url.split('qq.com')[1] + str(self.sk)
    sig = hashlib.md5(wait_sig.encode('utf-8')).hexdigest()
    res = requests.get(url + '&sig=' + sig)
    # 获得数据返回
    pois = res.json()['data']
    # 避免请求上限
    time.sleep(0.2)
    return pois, res.json()['count'] 

def get_single_location(self, location: str):
    """
    获得单个地点的数据
    
    Arguments:
        location {str} -- 地点
    
    Returns:
        {list} -- 该地点某关键词的所有数据
        {int} -- 该地点某关键词的所有数量
    """
    page = 1
    location_data = []
    pois, total = self.request_data(location, page)
    for poisition in pois:
        location_data.append(poisition)
    # 如果有多页
    while (total / 20) > page:
        pois, _ = self.request_data(location, page)
        for poisition in pois:
            location_data.append(poisition)
        page += 1
    print(f'{self.keyword} {location} 门店总数为：{total}')
    return location_data, total 

F:\push\20200315>python scrapy.py
瑞幸咖啡 北京 门店总数为：492
瑞幸咖啡 上海 门店总数为：581
瑞幸咖啡 广州 门店总数为：301
瑞幸咖啡 深圳 门店总数为：260

def get_cities_data(self, cities: str):
    """
    获得所有城市某关键词的数据
    
    Arguments:
        cities {list} -- 城市列表
    """
    result = []
    keyword_count = 0
    for city in cities:
        # 获得该城市的所有门店和总数
        data, count = self.get_single_location(city)
        keyword_count += count
        result.extend(data)
    print(f'{self.keyword} 一线城市门店总数为：{keyword_count}')
    # 导出数据
    with open(f'{self.keyword}.json', 'w') as my_file:
        json.dump(result, my_file, ensure_ascii=False) 

if __name__ == '__main__':
    cities = ['北京', '上海', '广州', '深圳']

    loc = LocationSearch('瑞幸咖啡')
    loc.get_cities_data(cities)

    loc = LocationSearch('星巴克咖啡')
    loc.get_cities_data(cities)

if __name__ == '__main__':
    with open('cities.csv', 'r', encoding='utf-8') as csvfile:
        reader = csv.reader(csvfile)
        cities = [row[0] for row in reader]

    loc = LocationSearch('瑞幸咖啡')
    loc.get_cities_data(cities)

    loc = LocationSearch('星巴克咖啡')
    loc.get_cities_data(cities)

# pois = res.json()['data']
pois = res.json().get('data', [])