g4f/__init__.py

import sys
from . import Provider
from g4f.models import Model, ModelUtils


class ChatCompletion:  
    @staticmethod  
    def create(api_key: str, model: Model.model or str, messages: list, provider: Provider.Provider = None, stream: bool = False, auth: str = False, **kwargs):  
        kwargs['auth'] = auth  
  
        if provider and provider.needs_auth and not auth:  
            print(  
                f'ValueError: {provider.__name__} requires authentication (use auth="cookie or token or jwt ..." param)', file=sys.stderr)  
            sys.exit(1)  
  
        try:  
            if isinstance(model, str):  
                try:  
                    model = ModelUtils.convert[model]  
                except KeyError:  
                    raise Exception(f'The model: {model} does not exist')  
  
            engine = model.best_provider if not provider else provider  
  
            if not engine.supports_stream and stream == True:  
                print(  
                    f"ValueError: {engine.__name__} does not support 'stream' argument", file=sys.stderr)  
                sys.exit(1)  
  
            print(f'Using {engine.__name__} provider')  
  
            return (engine._create_completion(api_key=api_key, model=model.name, messages=messages, stream=stream, **kwargs)  
                    if stream else ''.join(engine._create_completion(api_key=api_key, model=model.name, messages=messages, stream=stream, **kwargs)))  
        except TypeError as e:  
            print(e)  
            arg: str = str(e).split("'")[1]  
            print(  
                f"ValueError: {engine.__name__} does not support '{arg}' argument", file=sys.stderr)  
            sys.exit(1)