test.py

import time
import requests

headers = {}
url = 'https://sleepy-reaches-6892.herokuapp.com/test'

def test(timeout) :
  start = time.time()
  response = requests.get(url=url,
      timeout=timeout, stream=True, headers=headers)
  for x in response.iter_content(2) :
    pass
  print("T={}, stream iter took: {}".format(timeout, time.time() - start))

  start = time.time()
  response = requests.get(url=url,
      timeout=timeout, stream=True)
  response.content
  print("T={}, stream all took: {}".format(timeout, time.time() - start))

  start = time.time()
  response = requests.get(url=url,
      timeout=timeout, headers=headers)
  response.content
  print("T={}, no stream took: {}".format(timeout, time.time() - start))


test(10)
test(None)