python - 如何加速 API 请求？

Question

我构建了以下小程序，用于使用 google 的 place api 获取电话号码，但它非常慢。当我测试 6 个项目时，它需要 4.86 秒到 1.99 秒，我不确定为什么时间会发生重大变化。我对 API 很陌生，所以我什至不确定哪些事情可以/不能加速，哪些事情留给服务 API 的网络服务器，以及我可以自己改变什么。

import requests,json,time
searchTerms = input("input places separated by comma")

start_time = time.time() #timer
searchTerms = searchTerms.split(',')
for i in searchTerms:
    r1 = requests.get('https://maps.googleapis.com/maps/api/place/textsearch/json?query='+ i +'&key=MY_KEY')
    a = r1.json()
    pid = a['results'][0]['place_id']
    r2 = requests.get('https://maps.googleapis.com/maps/api/place/details/json?placeid='+pid+'&key=MY_KEY')
    b = r2.json()
    phone = b['result']['formatted_phone_number']
    name = b['result']['name']
    website = b['result']['website']
    print(phone+' '+name+' '+website)

print("--- %s seconds ---" % (time.time() - start_time))

Answer 1

您可能希望并行发送请求。 Python 提供 multiprocessing适合这样的任务的模块。

示例代码:

from multiprocessing import Pool

def get_data(i):
    r1 = requests.get('https://maps.googleapis.com/maps/api/place/textsearch/json?query='+ i +'&key=MY_KEY')
    a = r1.json()
    pid = a['results'][0]['place_id']
    r2 = requests.get('https://maps.googleapis.com/maps/api/place/details/json?placeid='+pid+'&key=MY_KEY')
    b = r2.json()
    phone = b['result']['formatted_phone_number']
    name = b['result']['name']
    website = b['result']['website']
    return ' '.join((phone, name, website))

if __name__ == '__main__':
    terms = input("input places separated by comma").split(",")
    with Pool(5) as p:
        print(p.map(get_data, terms))