bitcurex.py

url = BASE_URL + method
payload = {'nonce': get_nonce()}
payload.update(kwargs)

post_data = urllib.urlencode(payload)

sign = hmac.new(
    SECRET.decode('base64'),
    post_data,
    hashlib.sha512).digest()
headers = {
    'Rest-Key': KEY,
    'Rest-Sign': sign.encode('base64').strip().replace('\n', ''),
    'User-Agent': 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)',
    'Content-type': 'application/x-www-form-urlencoded'
}

response = requests.post(url, data=payload, headers=headers)