Securely Obtain OAuth 2.0 Access Token (Client Credentials)

import requests
import os

# Environment variables are highly recommended for sensitive credentials
CLIENT_ID = os.environ.get('OAUTH_CLIENT_ID', 'YOUR_CLIENT_ID')
CLIENT_SECRET = os.environ.get('OAUTH_CLIENT_SECRET', 'YOUR_CLIENT_SECRET')
TOKEN_URL = os.environ.get('OAUTH_TOKEN_URL', 'https://api.example.com/oauth/token')
SCOPE = 'read write' # Optional, depends on the API

def get_access_token():
    try:
        response = requests.post(
            TOKEN_URL,
            data={
                'grant_type': 'client_credentials',
                'client_id': CLIENT_ID,
                'client_secret': CLIENT_SECRET,
                'scope': SCOPE
            },
            headers={'Content-Type': 'application/x-www-form-urlencoded'}
        )
        response.raise_for_status() # Raise an exception for HTTP errors
        token_data = response.json()
        return token_data.get('access_token')
    except requests.exceptions.RequestException as e:
        print(f"Error obtaining access token: {e}")
        return None

if __name__ == "__main__":
    access_token = get_access_token()
    if access_token:
        print(f"Successfully obtained access token: {access_token[:10]}...")
        # Example: Use the token to make an authenticated API call
        # API_URL = 'https://api.example.com/data'
        # headers = {'Authorization': f'Bearer {access_token}'}
        # api_response = requests.get(API_URL, headers=headers)
        # print(api_response.json())
    else:
        print("Failed to obtain access token.")