For Python 3.X

Gemini_Connection

import requests
import base64
import hmac
import hashlib
from hashlib import sha384
from io import BytesIO
import time
import json

def connect():

    f=open("gemini-api-sandbox.txt", "r")
    if f.mode == 'r':
       
        gemini_api_key =f.readline().rstrip('\n')
        gemini_api_secret =f.readline().rstrip('\n')
        f.close()
    payload_nonce = int(round(time.time()-1398621111,1)*10)
    url = 'https://api.sandbox.gemini.com/v1/heartbeat'
    payload =  {"request": "/v1/heartbeat", "nonce": payload_nonce}
    encoded_payload = json.dumps(payload)
    b64 = base64.b64encode(bytes(encoded_payload, 'utf-8'))
    signature = hmac.new(bytearray(gemini_api_secret, 'utf-8'), b64, hashlib.sha384).hexdigest()
    request_headers = {
    'Content-Type': "text/plain",
    'Content-Length': "0",
    'X-GEMINI-APIKEY': gemini_api_key,
    'X-GEMINI-PAYLOAD': b64,
    'X-GEMINI-SIGNATURE': signature,
    'Cache-Control': "no-cache"
    }

    response = requests.post(url, headers=request_headers, verify=False)
    print(response.status_code)
    print(response.content)
connect()