Building a Reusable Python API Client

import requests
import os

class MyApiClient:
    def __init__(self, base_url, api_key_env_var='MY_API_KEY'):
        self.base_url = base_url
        self.api_key = os.getenv(api_key_env_var)
        if not self.api_key:
            raise ValueError(f"API key environment variable '{api_key_env_var}' not set.")
        self.headers = {
            'Authorization': f'Bearer {self.api_key}',
            'Content-Type': 'application/json',
            'Accept': 'application/json'
        }

    def _request(self, method, endpoint, params=None, data=None, json=None):
        url = f"{self.base_url}/{endpoint.lstrip('/')}"
        try:
            response = requests.request(
                method,
                url,
                headers=self.headers,
                params=params,
                data=data,
                json=json,
                timeout=10 # Set a timeout for requests
            )
            response.raise_for_status() # Raises HTTPError for bad responses (4xx or 5xx)
            return response.json()
        except requests.exceptions.HTTPError as e:
            print(f"HTTP Error: {e.response.status_code} - {e.response.text}")
            raise
        except requests.exceptions.ConnectionError as e:
            print(f"Connection Error: {e}")
            raise
        except requests.exceptions.Timeout as e:
            print(f"Timeout Error: {e}")
            raise
        except requests.exceptions.RequestException as e:
            print(f"Request Error: {e}")
            raise

    def get(self, endpoint, params=None):
        return self._request('GET', endpoint, params=params)

    def post(self, endpoint, data=None, json=None):
        return self._request('POST', endpoint, data=data, json=json)

    def put(self, endpoint, json=None):
        return self._request('PUT', endpoint, json=json)

    def delete(self, endpoint):
        return self._request('DELETE', endpoint)

# --- Example Usage ---
if __name__ == "__main__":
    # Set a dummy API key for testing (in real app, use environment variables)
    os.environ['MY_API_KEY'] = 'your_super_secret_api_key'

    try:
        client = MyApiClient(base_url='https://jsonplaceholder.typicode.com')

        # Get a post
        post = client.get('/posts/1')
        print("Fetched Post:", post)

        # Create a new post
        new_post_data = {'title': 'foo', 'body': 'bar', 'userId': 1}
        created_post = client.post('/posts', json=new_post_data)
        print("Created Post:", created_post)

        # Simulate an error
        # This would raise an exception due to 404
        # client.get('/nonexistent-endpoint')

    except ValueError as e:
        print(f"Configuration Error: {e}")
    except requests.exceptions.RequestException as e:
        print(f"API Client Error: {e}")