python requests header

url = 'https://api.github.com/some/endpoint'
headers = {'user-agent': 'my-app/0.0.1'}
r = requests.get(url, headers=headers)

# pip install requests
import requests
req = requests.post('<url here>', 'html.parser')
print(req.text)

Raise an exception if a request is unsuccessful

import requests
url = "http://mock.kite.com/status/404"
r = requests.get(url)
try: 
    r.raise_for_status()
except requests.exceptions.HTTPError as e: 
    print e
OUTPUT
404 Client Error: NOT FOUND