python requests oauth2

Python Requests OAuth2

If you are working with an API that requires authentication, OAuth2 is a common way to authenticate requests. OAuth2 is an authentication protocol that allows third-party applications to access a user's data without exposing their password. In this answer, we will discuss how to use Python Requests library to make authenticated requests using OAuth2.

Step 1: Install Required Libraries

To get started with OAuth2 authentication, you will need to install the requests_oauthlib library. You can install it using pip:

pip install requests_oauthlib

Step 2: Get Authorization Credentials

To authenticate your requests, you will need to obtain authorization credentials from the API provider. Typically, this involves registering your application with the provider and obtaining a client ID and client secret.

Step 3: Authenticate Requests

Once you have obtained your authorization credentials, you can use the requests_oauthlib library to make authenticated requests. The first step is to create an OAuth2 session:

import requests_oauthlib
from requests_oauthlib import OAuth2Session

client_id = 'your_client_id'
client_secret = 'your_client_secret'

oauth = OAuth2Session(client_id)

Next, you can use the session object to make authenticated requests:

response = oauth.get('', headers={'Accept': 'application/json'})

In this example, we are making a GET request to the API endpoint '' with an 'Accept' header of 'application/json'.

Step 4: Handle Authentication Errors

If your authentication credentials are invalid or have expired, you may receive an authentication error from the API provider. You can handle these errors by catching the requests.exceptions.HTTPError exception:

    response = oauth.get('', headers={'Accept': 'application/json'})
except requests.exceptions.HTTPError as error:

This will catch any HTTP errors returned by the API provider and print the error message.

That's it! Using Python Requests library with OAuth2 authentication is a simple and effective way to authenticate your requests to an API.