Python requests oauth2 access token

[herobpv]

Hi, I am new to python programming and trying to make a RESTful api call and retrieve json payload from a GET method. I am using the below code but I get error and not sure how to proceed from here.

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import sys import requests import json import logging import time   logging.captureWarnings(True) api_url = "https://webapi.com/api/v1/data"   def get_new_token():     acc_token_url = "https://webapi.com/connect/accesstoken"     client_id = 'client'     client_secret = 'secret'     token_req_payload = {'grant_type': 'client_credentials'}     token_response = requests.post(acc_token_url , data = token_req_payload, verify = False, allow_redirects = False, auth = (client_id, client_secret))                if token_response.status_code != 200:         print("Failed to obtain token from OAuth2 server", file = sys.stderr)         sys.exit(1)         print("Successfuly obtained a new token from OAuth2 server")         tokens = json.loads(token_response.text)     return tokens['access_token']   token = get_new_token()   while True:        api_call_headers = {'Authorization': 'Bearer ' + token}     api_call_response = requests.get(api_url, headers = api_call_headers, verify = False)   if  api_call_response.status_code == 401:     token = get_new_token() else:     print(api_call_response.text)

Error:
Traceback (most recent call last):
NameError: name 'token_response' is not defined

[ndc85430]

Looks like your indentation needs fixing.

[herobpv]

Looks like your indentation needs fixing.

Hi, I have fixed the indentation and now run into the below error.

Error:
UnboundLocalError: local variable 'tokens' referenced before assignment

[ndc85430]

Going by the code in your previous post, since you haven't shown the updated version, here's a hint. What happens if the response has a status other than 200?

[herobpv]

Modified code:

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import sys import requests import json import logging import time   logging.captureWarnings(True) api_url = "https://webapi.com/api/v1/data"   def get_new_token():     acc_token_url = "https://webapi.com/connect/accesstoken"     client_id = 'client'     client_secret = 'secret'     token_req_payload = {'grant_type': 'client_credentials'}     token_response = requests.post(acc_token_url , data = token_req_payload, verify = False, allow_redirects = False, auth = (client_id, client_secret))                    if token_response.status_code != 200:        print("Failed to obtain token from OAuth2 server", file = sys.stderr)        sys.exit(1)     print("Successfuly obtained a new token from OAuth2 server")     tokens = json.loads(token_response.text)     return tokens['access_token']   token = get_new_token()   while True:        api_call_headers = {'Authorization': 'Bearer ' + token}     api_call_response = requests.get(api_url, headers = api_call_headers, verify = False)   if  api_call_response.status_code == 401:     token = get_new_token() else:     print(api_call_response.text)

Below is the new error message I get after modifying the code.

Error:

Error:
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='www.webapi.com', port=80): Max retries exceeded with url: / (Caused by NewConnectionError(': Failed to establish a new connection: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond'))

[snippsat]

Requests has own library for OAuth 2 in Doc.
requests-oauthlib.

[herobpv]

Requests has own library for OAuth 2 in Doc.
requests-oauthlib.

Thank you for your response. I have modified my code accordingly. Please let me know if I am doing it right.

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import sys import requests from requests_oauthlib import OAuth2Session from oauthlib.oauth2 import BackendApplicationClient import json import logging import time   logging.captureWarnings(True) api_url = "https://webapi.com/api/v1/data"   #Obtain credentials from OAuth provider   client_id = 'client' client_secret = 'secret'   #Fetch an access token from the provider.   client = BackendApplicationClient(client_id=client_id) oauth = OAuth2Session(client=client) token = oauth.fetch_token(token_url='https://webapi.com/connect/accesstoken', client_id=client_id, client_secret=client_secret)   #Automatic token refresh and update   client = OAuth2Session(client_id, token=token) response = client.get(api_url) data = response.json()

Regards