companies.py

import base64
import hashlib
import hmac
import time
from email.utils import formatdate
import requests

HOST="somewhere"
KEY_ID="gimme"
SECRET="ssshhh"
ACCEPT="something"


def gimme_yo_stuff(path):
  time = formatdate(localtime=True)
  requests.get(path, headers={
    "Accept": ACCEPT,
    "Date": time,
    "Authorization": "%s:%s" % (KEY_ID, signature_for_path(path, 'GET', time),
  })

          
def signature_for_path(path, method, time):
  payload = string_to_sign(method, path, time)
  h = hmac.new(SECRET, payload, hashlib.sha256)
  d = h.digest()
  return base64.b64encode(d)

def string_to_sign(method, path, time):
  return "\n".join([method, HOST, path, time, KEY_ID, ACCEPT, ''])

# then call gimme_yo_stuff('/some/path')?