Request

• Make a simple request

import requests


url = 'http://api.openweathermap.org/data/2.5/weather'
payload = {'q': 'shanghai', 'units': 'metric', 'lang': 'zh_cn', 'appid': <appid>}
r = requests.get(url, params=payload)

• Get JSON response data

data = r.json()

• Response Status Code

if r.status_code == 200:
    data = r.json()

Or use the built-in status code for easy reference

if r.status_code == requests.codes.ok:
    data = r.json()

• Timeout

To stop waiting for a response after a given number of seconds with the timeout parameter

r = requests.get(api, params=payload, timeout=0.001)

If no timeout parameters, the program may hang indefinitely.

• Exception

In the event of a network problem (e.g. DNS failure, refused connection, etc), Requests will raise a ConnectionError exception.

If a request times out, a Timeout exception is raised.

try:
    r = requests.get(url, params=params, timeout=0.001)
    if r.status_code == requests.codes.ok:
        data = r.json()
    else:
        print('Bad Request!')
except (requests.Timeout, requests.ConnectionError):
    print('Network problem or request timeout!')