I am trying to write a script to place an order for me on GDAX. In ordered to do that, I needed a base64 signature. I encoded it with the base64 library but the next part states the base64 signature isn’t defined.

This is the error msg that it gives:

“Traceback (most recent call last): File “first.py”, line 39, in ‘CB-ACCESS-SIGN’: signature_b64, NameError: name ‘signature_b64’ is not defined

Thanks in advance!

Code is below(passwords are omitted for security reasons :P):

import requests import json import base64 import hashlib import hmac import time from requests.auth import AuthBase  class GDAXRequestAuth(AuthBase):  def _init_(self, api_key, secret_key, passphrase):<     self.api_key = api_key     self.secret_key = sec`enter code here`ret_key     self.passphrase = passphrase def _call_(self, request):     timestamp = str(time.time())     message = timestamp + request.method + request.path_url + (request.body or '')     hmac_key = base64.b64decode(self.secret_key)     signature = hmac.new(hmac_key, message.encode('utf-8'), hashlib.sha256)     signature_b64 = base64.b64encode(signature.digest())     request.headers.update({         'CB-ACCESS-SIGN': signature_b64,         'CB-ACCESS-TIMESTAMP': timestamp,         'CB-ACCESS-KEY': self.api_key,         'CB-ACCESS-PASSPHRASE': self.passphrase,         'Content-Type': 'application/json'     })     return request 

omitted part

api_base = api_key =  api_secret =  passphrase =     headers = {     'CB-ACCESS-SIGN': signature_b64,     'CB-ACCESS-TIMESTAMP': timestamp,     'CB-ACCESS-KEY': api_key,     'CB-ACCESS-PASSPHRASE': passphrase,     'Content-Type': 'application/json' }  requests.post(order_url, data=data, headers=headers)    auth = GDAXRequestAuth(api_key, api_secret, passphrase) order_url = api_base + '/orders' order_data = {     'type': 'market',     'side': 'buy',     'product_id': 'BTC-USD',     'size': '0.01' } response = requests.post(order_url, data= json.dumps(order_data), auth =auth) print(response.json())