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Requests and urllib3 are very similar in terms of capabilities. it is generally recommended to use Requests when it comes to making HTTP requests. The following code example illustrates a few advanced features: 

import requests

# builds on top of urllib3's connection pooling
# session reuses the same TCP connection if 
# requests are made to the same host
# see https://en.wikipedia.org/wiki/HTTP_persistent_connection for details
session = requests.Session()

# You may pass in custom cookie
r = session.get('http://httpbin.org/get', cookies={'my-cookie': 'browser'})
print(r.text)
# '{"cookies": {"my-cookie": "test cookie"}}'

# Streaming is another nifty feature
# From http://docs.python-requests.org/en/master/user/advanced/#streaming-requests
# copyright belongs to reques.org
r = requests.get('http://httpbin.org/stream/20', stream=True)

for line in r.iter_lines():
  # filter out keep-alive new lines
  if line:
     decoded_line = line.decode('utf-8')
     print(json.loads(decoded_line))