handler.py

import requests

class CryptoAPIError(Exception):
    pass

class CryptoHandler:
    BASE_URL = 'https://api.example.com/crypto'

    def fetch_data(self, endpoint):
        try:
            response = requests.get(f'{self.BASE_URL}/{endpoint}')
            response.raise_for_status()
            return response.json()
        except requests.exceptions.HTTPError as http_err:
            raise CryptoAPIError(f'HTTP error occurred: {http_err}') from http_err
        except requests.exceptions.ConnectionError:
            raise CryptoAPIError('Network error, please check your connection.')
        except requests.exceptions.Timeout:
            raise CryptoAPIError('Request timed out.')
        except requests.exceptions.RequestException as req_err:
            raise CryptoAPIError(f'An error occurred: {req_err}')
        except ValueError:
            raise CryptoAPIError('Invalid JSON response.')

    def get_price(self, crypto):
        return self.fetch_data(f'price/{crypto}')

    def get_market_cap(self, crypto):
        return self.fetch_data(f'market_cap/{crypto}')