Implement OAuth 2.0 Client Credentials Flow

import requests
import os

# Environment variables for sensitive information
CLIENT_ID = os.getenv('OAUTH_CLIENT_ID', 'your_client_id')
CLIENT_SECRET = os.getenv('OAUTH_CLIENT_SECRET', 'your_client_secret')
TOKEN_URL = os.getenv('OAUTH_TOKEN_URL', 'https://api.example.com/oauth/token')
SCOPE = os.getenv('OAUTH_SCOPE', 'read write') # Optional scope

def get_oauth_token():
    try:
        response = requests.post(
            TOKEN_URL,
            data={
                'grant_type': 'client_credentials',
                'client_id': CLIENT_ID,
                'client_secret': CLIENT_SECRET,
                'scope': SCOPE # Include if required by the API
            },
            headers={'Content-Type': 'application/x-www-form-urlencoded'}
        )
        response.raise_for_status() # Raise an exception for HTTP errors (4xx or 5xx)
        token_data = response.json()
        access_token = token_data.get('access_token')
        expires_in = token_data.get('expires_in')

        if access_token:
            print(f"Successfully obtained access token: {access_token[:10]}... (expires in {expires_in} seconds)")
            return access_token
        else:
            print(f"Failed to get access token. Response: {token_data}")
            return None
    except requests.exceptions.RequestException as e:
        print(f"Error during token request: {e}")
        return None
    except ValueError:
        print(f"Error decoding JSON response for token request: {response.text}")
        return None

if __name__ == "__main__":
    token = get_oauth_token()
    if token:
        print("Token acquired. You can now use it for API calls.")
        # Example API call with the acquired token
        # API_ENDPOINT = 'https://api.example.com/data'
        # headers = {'Authorization': f'Bearer {token}'}
        # api_response = requests.get(API_ENDPOINT, headers=headers)
        # print(f"API call response status: {api_response.status_code}")
    else:
        print("Could not acquire token.")