10 files changed, 478 insertions, 104 deletions

diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
new file mode 100644
index 00000000..e895e969
--- /dev/null
+++ b/.github/workflows/unittest.yml
@@ -0,0 +1,19 @@
+name: Unittest
+
+on: [push]
+
+jobs:
+  build:
+    name: Build unittest
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: "3.x"
+        cache: 'pip'
+    - name: Install requirements
+    - run: pip install -r requirements.txt
+    - name: Run tests
+      run: python -m etc.unittest.main
\ No newline at end of file
diff --git a/etc/unittest/main.py b/etc/unittest/main.py
new file mode 100644
index 00000000..61f4ffda
--- /dev/null
+++ b/etc/unittest/main.py
@@ -0,0 +1,73 @@
+import sys
+import pathlib
+import unittest
+from unittest.mock import MagicMock
+
+sys.path.append(str(pathlib.Path(__file__).parent.parent.parent))
+
+import g4f
+from g4f import ChatCompletion, get_last_provider
+from g4f.gui.server.backend import Backend_Api, get_error_message
+from g4f.base_provider import BaseProvider
+
+g4f.debug.logging = False
+
+class MockProvider(BaseProvider):
+    working = True
+
+    def create_completion(
+        model, messages, stream, **kwargs
+    ):
+        yield "Mock"
+
+    async def create_async(
+        model, messages, **kwargs
+    ):
+        return "Mock"
+
+class TestBackendApi(unittest.TestCase):
+
+    def setUp(self):
+        self.app = MagicMock()
+        self.api = Backend_Api(self.app)
+
+    def test_version(self):
+        response = self.api.get_version()
+        self.assertIn("version", response)
+        self.assertIn("latest_version", response)
+
+class TestChatCompletion(unittest.TestCase):
+
+    def test_create(self):
+        messages = [{'role': 'user', 'content': 'Hello'}]
+        result = ChatCompletion.create(g4f.models.default, messages)
+        self.assertTrue("Hello" in result or "Good" in result)
+        
+    def test_get_last_provider(self):
+        messages = [{'role': 'user', 'content': 'Hello'}]
+        ChatCompletion.create(g4f.models.default, messages, MockProvider)
+        self.assertEqual(get_last_provider(), MockProvider)
+        
+    def test_bing_provider(self):
+        messages = [{'role': 'user', 'content': 'Hello'}]
+        provider = g4f.Provider.Bing
+        result = ChatCompletion.create(g4f.models.default, messages, provider)
+        self.assertTrue("Bing" in result)
+
+class TestChatCompletionAsync(unittest.IsolatedAsyncioTestCase):
+    
+    async def test_async(self):
+        messages = [{'role': 'user', 'content': 'Hello'}]
+        result = await ChatCompletion.create_async(g4f.models.default, messages, MockProvider)
+        self.assertTrue("Mock" in result)
+
+class TestUtilityFunctions(unittest.TestCase):
+
+    def test_get_error_message(self):
+        g4f.debug.last_provider = g4f.Provider.Bing
+        exception = Exception("Message")
+        result = get_error_message(exception)
+        self.assertEqual("Bing: Exception: Message", result)
+
+if __name__ == '__main__':
+    unittest.main()
\ No newline at end of file
diff --git a/g4f/Provider/Phind.py b/g4f/Provider/Phind.py
index bb216989..9e80baa9 100644
--- a/g4f/Provider/Phind.py
+++ b/g4f/Provider/Phind.py
@@ -59,12 +59,16 @@ class Phind(AsyncGeneratorProvider):
                 "rewrittenQuestion": prompt,
                 "challenge": 0.21132115912208504
             }
-            async with session.post(f"{cls.url}/api/infer/followup/answer", headers=headers, json=data) as response:
+            async with session.post(f"https://https.api.phind.com/infer/", headers=headers, json=data) as response:
                 new_line = False
                 async for line in response.iter_lines():
                     if line.startswith(b"data: "):
                         chunk = line[6:]
-                        if chunk.startswith(b"<PHIND_METADATA>") or chunk.startswith(b"<PHIND_INDICATOR>"):
+                        if chunk.startswith(b'<PHIND_DONE/>'):
+                            break
+                        if chunk.startswith(b'<PHIND_WEBRESULTS>') or chunk.startswith(b'<PHIND_FOLLOWUP>'):
+                            pass
+                        elif chunk.startswith(b"<PHIND_METADATA>") or chunk.startswith(b"<PHIND_INDICATOR>"):
                             pass
                         elif chunk:
                             yield chunk.decode()
diff --git a/g4f/Provider/base_provider.py b/g4f/Provider/base_provider.py
index 3c083bda..fd92d17a 100644
--- a/g4f/Provider/base_provider.py
+++ b/g4f/Provider/base_provider.py
@@ -36,6 +36,17 @@ class AbstractProvider(BaseProvider):
     ) -> str:
         """
         Asynchronously creates a result based on the given model and messages.
+
+        Args:
+            cls (type): The class on which this method is called.
+            model (str): The model to use for creation.
+            messages (Messages): The messages to process.
+            loop (AbstractEventLoop, optional): The event loop to use. Defaults to None.
+            executor (ThreadPoolExecutor, optional): The executor for running async tasks. Defaults to None.
+            **kwargs: Additional keyword arguments.
+
+        Returns:
+            str: The created result as a string.
         """
         loop = loop or get_event_loop()
 
@@ -52,6 +63,12 @@ class AbstractProvider(BaseProvider):
     def params(cls) -> str:
         """
         Returns the parameters supported by the provider.
+
+        Args:
+            cls (type): The class on which this property is called.
+
+        Returns:
+            str: A string listing the supported parameters.
         """
         sig = signature(
             cls.create_async_generator if issubclass(cls, AsyncGeneratorProvider) else
@@ -90,6 +107,17 @@ class AsyncProvider(AbstractProvider):
     ) -> CreateResult:
         """
         Creates a completion result synchronously.
+
+        Args:
+            cls (type): The class on which this method is called.
+            model (str): The model to use for creation.
+            messages (Messages): The messages to process.
+            stream (bool): Indicates whether to stream the results. Defaults to False.
+            loop (AbstractEventLoop, optional): The event loop to use. Defaults to None.
+            **kwargs: Additional keyword arguments.
+
+        Returns:
+            CreateResult: The result of the completion creation.
         """
         loop = loop or get_event_loop()
         coro = cls.create_async(model, messages, **kwargs)
@@ -104,6 +132,17 @@ class AsyncProvider(AbstractProvider):
     ) -> str:
         """
         Abstract method for creating asynchronous results.
+
+        Args:
+            model (str): The model to use for creation.
+            messages (Messages): The messages to process.
+            **kwargs: Additional keyword arguments.
+
+        Raises:
+            NotImplementedError: If this method is not overridden in derived classes.
+
+        Returns:
+            str: The created result as a string.
         """
         raise NotImplementedError()
 
@@ -126,6 +165,17 @@ class AsyncGeneratorProvider(AsyncProvider):
     ) -> CreateResult:
         """
         Creates a streaming completion result synchronously.
+
+        Args:
+            cls (type): The class on which this method is called.
+            model (str): The model to use for creation.
+            messages (Messages): The messages to process.
+            stream (bool): Indicates whether to stream the results. Defaults to True.
+            loop (AbstractEventLoop, optional): The event loop to use. Defaults to None.
+            **kwargs: Additional keyword arguments.
+
+        Returns:
+            CreateResult: The result of the streaming completion creation.
         """
         loop = loop or get_event_loop()
         generator = cls.create_async_generator(model, messages, stream=stream, **kwargs)
@@ -146,6 +196,15 @@ class AsyncGeneratorProvider(AsyncProvider):
     ) -> str:
         """
         Asynchronously creates a result from a generator.
+
+        Args:
+            cls (type): The class on which this method is called.
+            model (str): The model to use for creation.
+            messages (Messages): The messages to process.
+            **kwargs: Additional keyword arguments.
+
+        Returns:
+            str: The created result as a string.
         """
         return "".join([
             chunk async for chunk in cls.create_async_generator(model, messages, stream=False, **kwargs) 
@@ -162,5 +221,17 @@ class AsyncGeneratorProvider(AsyncProvider):
     ) -> AsyncResult:
         """
         Abstract method for creating an asynchronous generator.
+
+        Args:
+            model (str): The model to use for creation.
+            messages (Messages): The messages to process.
+            stream (bool): Indicates whether to stream the results. Defaults to True.
+            **kwargs: Additional keyword arguments.
+
+        Raises:
+            NotImplementedError: If this method is not overridden in derived classes.
+
+        Returns:
+            AsyncResult: An asynchronous generator yielding results.
         """
         raise NotImplementedError()
\ No newline at end of file
diff --git a/g4f/Provider/bing/create_images.py b/g4f/Provider/bing/create_images.py
index 29daccbd..060cd184 100644
--- a/g4f/Provider/bing/create_images.py
+++ b/g4f/Provider/bing/create_images.py
@@ -198,7 +198,7 @@ class CreateImagesBing:
     _cookies: Dict[str, str] = {}
     
     @classmethod
-    def create_completion(cls, prompt: str, cookies: Dict[str, str] = None, proxy: str = None) -> Generator[str]:
+    def create_completion(cls, prompt: str, cookies: Dict[str, str] = None, proxy: str = None) -> Generator[str, None, None]:
         """
         Generator for creating imagecompletion based on a prompt.
 
diff --git a/g4f/Provider/create_images.py b/g4f/Provider/create_images.py
index f8a0442d..b8bcbde3 100644
--- a/g4f/Provider/create_images.py
+++ b/g4f/Provider/create_images.py
@@ -8,13 +8,31 @@ from ..base_provider import BaseProvider, ProviderType
 
 system_message = """
 You can generate custom images with the DALL-E 3 image generator.
-To generate a image with a prompt, do this:
+To generate an image with a prompt, do this:
 <img data-prompt=\"keywords for the image\">
 Don't use images with data uri. It is important to use a prompt instead.
 <img data-prompt=\"image caption\">
 """
 
 class CreateImagesProvider(BaseProvider):
+    """
+    Provider class for creating images based on text prompts.
+
+    This provider handles image creation requests embedded within message content, 
+    using provided image creation functions.
+
+    Attributes:
+        provider (ProviderType): The underlying provider to handle non-image related tasks.
+        create_images (callable): A function to create images synchronously.
+        create_images_async (callable): A function to create images asynchronously.
+        system_message (str): A message that explains the image creation capability.
+        include_placeholder (bool): Flag to determine whether to include the image placeholder in the output.
+        __name__ (str): Name of the provider.
+        url (str): URL of the provider.
+        working (bool): Indicates if the provider is operational.
+        supports_stream (bool): Indicates if the provider supports streaming.
+    """
+
     def __init__(
         self,
         provider: ProviderType,
@@ -23,6 +41,16 @@ class CreateImagesProvider(BaseProvider):
         system_message: str = system_message,
         include_placeholder: bool = True
     ) -> None:
+        """
+        Initializes the CreateImagesProvider.
+
+        Args:
+            provider (ProviderType): The underlying provider.
+            create_images (callable): Function to create images synchronously.
+            create_async (callable): Function to create images asynchronously.
+            system_message (str, optional): System message to be prefixed to messages. Defaults to a predefined message.
+            include_placeholder (bool, optional): Whether to include image placeholders in the output. Defaults to True.
+        """
         self.provider = provider
         self.create_images = create_images
         self.create_images_async = create_async
@@ -40,6 +68,22 @@ class CreateImagesProvider(BaseProvider):
         stream: bool = False,
         **kwargs
     ) -> CreateResult:
+        """
+        Creates a completion result, processing any image creation prompts found within the messages.
+
+        Args:
+            model (str): The model to use for creation.
+            messages (Messages): The messages to process, which may contain image prompts.
+            stream (bool, optional): Indicates whether to stream the results. Defaults to False.
+            **kwargs: Additional keywordarguments for the provider.
+
+        Yields:
+            CreateResult: Yields chunks of the processed messages, including image data if applicable.
+
+        Note:
+            This method processes messages to detect image creation prompts. When such a prompt is found, 
+            it calls the synchronous image creation function and includes the resulting image in the output.
+        """
         messages.insert(0, {"role": "system", "content": self.system_message})
         buffer = ""
         for chunk in self.provider.create_completion(model, messages, stream, **kwargs):
@@ -71,6 +115,21 @@ class CreateImagesProvider(BaseProvider):
         messages: Messages,
         **kwargs
     ) -> str:
+        """
+        Asynchronously creates a response, processing any image creation prompts found within the messages.
+
+        Args:
+            model (str): The model to use for creation.
+            messages (Messages): The messages to process, which may contain image prompts.
+            **kwargs: Additional keyword arguments for the provider.
+
+        Returns:
+            str: The processed response string, including asynchronously generated image data if applicable.
+
+        Note:
+            This method processes messages to detect image creation prompts. When such a prompt is found, 
+            it calls the asynchronous image creation function and includes the resulting image in the output.
+        """
         messages.insert(0, {"role": "system", "content": self.system_message})
         response = await self.provider.create_async(model, messages, **kwargs)
         matches = re.findall(r'(<img data-prompt="(.*?)">)', response)
diff --git a/g4f/gui/client/js/chat.v1.js b/g4f/gui/client/js/chat.v1.js
index 7ed9f183..8b9bc181 100644
--- a/g4f/gui/client/js/chat.v1.js
+++ b/g4f/gui/client/js/chat.v1.js
@@ -652,9 +652,9 @@ observer.observe(message_input, { attributes: true });
     
     document.title = 'g4f - gui - ' + versions["version"];
     text = "version ~ "
-    if (versions["version"] != versions["lastet_version"]) {
-        release_url = 'https://github.com/xtekky/gpt4free/releases/tag/' + versions["lastet_version"];
-        text += '<a href="' + release_url +'" target="_blank" title="New version: ' + versions["lastet_version"] +'">' + versions["version"] + ' 🆕</a>';
+    if (versions["version"] != versions["latest_version"]) {
+        release_url = 'https://github.com/xtekky/gpt4free/releases/tag/' + versions["latest_version"];
+        text += '<a href="' + release_url +'" target="_blank" title="New version: ' + versions["latest_version"] +'">' + versions["version"] + ' 🆕</a>';
     } else {
         text += versions["version"];
     }
diff --git a/g4f/gui/server/backend.py b/g4f/gui/server/backend.py
index 9d12bea5..4a5cafa8 100644
--- a/g4f/gui/server/backend.py
+++ b/g4f/gui/server/backend.py
@@ -1,6 +1,7 @@
 import logging
 import json
 from flask import request, Flask
+from typing import Generator
 from g4f import debug, version, models
 from g4f import _all_models, get_last_provider, ChatCompletion
 from g4f.image import is_allowed_extension, to_image
@@ -11,60 +12,123 @@ from .internet import get_search_message
 debug.logging = True
 
 class Backend_Api:
+    """
+    Handles various endpoints in a Flask application for backend operations.
+
+    This class provides methods to interact with models, providers, and to handle
+    various functionalities like conversations, error handling, and version management.
+
+    Attributes:
+        app (Flask): A Flask application instance.
+        routes (dict): A dictionary mapping API endpoints to their respective handlers.
+    """
     def __init__(self, app: Flask) -> None:
+        """
+        Initialize the backend API with the given Flask application.
+
+        Args:
+            app (Flask): Flask application instance to attach routes to.
+        """
         self.app: Flask = app
         self.routes = {
             '/backend-api/v2/models': {
-                'function': self.models,
-                'methods' : ['GET']
+                'function': self.get_models,
+                'methods': ['GET']
             },
             '/backend-api/v2/providers': {
-                'function': self.providers,
-                'methods' : ['GET']
+                'function': self.get_providers,
+                'methods': ['GET']
             },
             '/backend-api/v2/version': {
-                'function': self.version,
-                'methods' : ['GET']
+                'function': self.get_version,
+                'methods': ['GET']
             },
             '/backend-api/v2/conversation': {
-                'function': self._conversation,
+                'function': self.handle_conversation,
                 'methods': ['POST']
             },
             '/backend-api/v2/gen.set.summarize:title': {
-                'function': self._gen_title,
+                'function': self.generate_title,
                 'methods': ['POST']
             },
             '/backend-api/v2/error': {
-                'function': self.error,
+                'function': self.handle_error,
                 'methods': ['POST']
             }
         }
     
-    def error(self):
+    def handle_error(self):
+        """
+        Initialize the backend API with the given Flask application.
+
+        Args:
+            app (Flask): Flask application instance to attach routes to.
+        """
         print(request.json)
-        
         return 'ok', 200
     
-    def models(self):
+    def get_models(self):
+        """
+        Return a list of all models.
+
+        Fetches and returns a list of all available models in the system.
+
+        Returns:
+            List[str]: A list of model names.
+        """
         return _all_models
     
-    def providers(self):
-        return [
-            provider.__name__ for provider in __providers__ if provider.working
-        ]
+    def get_providers(self):
+        """
+        Return a list of all working providers.
+        """
+        return [provider.__name__ for provider in __providers__ if provider.working]
         
-    def version(self):
+    def get_version(self):
+        """
+        Returns the current and latest version of the application.
+
+        Returns:
+            dict: A dictionary containing the current and latest version.
+        """
         return {
             "version": version.utils.current_version,
-            "lastet_version": version.get_latest_version(),
+            "latest_version": version.get_latest_version(),
         }
     
-    def _gen_title(self):
-        return {
-            'title': ''
-        }
+    def generate_title(self):
+        """
+        Generates and returns a title based on the request data.
+
+        Returns:
+            dict: A dictionary with the generated title.
+        """
+        return {'title': ''}
     
-    def _conversation(self):
+    def handle_conversation(self):
+        """
+        Handles conversation requests and streams responses back.
+
+        Returns:
+            Response: A Flask response object for streaming.
+        """
+        kwargs = self._prepare_conversation_kwargs()
+
+        return self.app.response_class(
+            self._create_response_stream(kwargs),
+            mimetype='text/event-stream'
+        )
+    
+    def _prepare_conversation_kwargs(self):
+        """
+        Prepares arguments for chat completion based on the request data.
+
+        Reads the request and prepares the necessary arguments for handling 
+        a chat completion request.
+
+        Returns:
+            dict: Arguments prepared for chat completion.
+        """
         kwargs = {}
         if 'image' in request.files:
             file = request.files['image']
@@ -87,47 +151,70 @@ class Backend_Api:
                 messages[-1]["content"] = get_search_message(messages[-1]["content"])
         model = json_data.get('model')
         model = model if model else models.default
-        provider = json_data.get('provider', '').replace('g4f.Provider.', '')
-        provider = provider if provider and provider != "Auto" else None
         patch = patch_provider if json_data.get('patch_provider') else None
 
-        def try_response():
-            try:
-                first = True
-                for chunk in ChatCompletion.create(
-                    model=model,
-                    provider=provider,
-                    messages=messages,
-                    stream=True,
-                    ignore_stream_and_auth=True,
-                    patch_provider=patch,
-                    **kwargs
-                ):
-                    if first:
-                        first = False
-                        yield json.dumps({
-                            'type'    : 'provider',
-                            'provider': get_last_provider(True)
-                        }) + "\n"
-                    if isinstance(chunk, Exception):
-                        logging.exception(chunk)
-                        yield json.dumps({
-                            'type'   : 'message',
-                            'message': get_error_message(chunk),
-                        }) + "\n"
-                    else:
-                        yield json.dumps({
-                            'type'   : 'content',
-                            'content': str(chunk),
-                        }) + "\n"
-            except Exception as e:
-                logging.exception(e)
-                yield json.dumps({
-                    'type' : 'error',
-                    'error': get_error_message(e)
-                })
-
-        return self.app.response_class(try_response(), mimetype='text/event-stream')
+        return {
+            "model": model,
+            "provider": provider,
+            "messages": messages,
+            "stream": True,
+            "ignore_stream_and_auth": True,
+            "patch_provider": patch,
+            **kwargs
+        }
+
+    def _create_response_stream(self, kwargs) -> Generator[str, None, None]:
+        """
+        Creates and returns a streaming response for the conversation.
+
+        Args:
+            kwargs (dict): Arguments for creating the chat completion.
+
+        Yields:
+            str: JSON formatted response chunks for the stream.
+
+        Raises:
+            Exception: If an error occurs during the streaming process.
+        """
+        try:
+            first = True
+            for chunk in ChatCompletion.create(**kwargs):
+                if first:
+                    first = False
+                    yield self._format_json('provider', get_last_provider(True))
+                if isinstance(chunk, Exception):
+                    logging.exception(chunk)
+                    yield self._format_json('message', get_error_message(chunk))
+                else:
+                    yield self._format_json('content', str(chunk))
+        except Exception as e:
+            logging.exception(e)
+            yield self._format_json('error', get_error_message(e))
+            
+    def _format_json(self, response_type: str, content) -> str:
+        """
+        Formats and returns a JSON response.
+
+        Args:
+            response_type (str): The type of the response.
+            content: The content to be included in the response.
+
+        Returns:
+            str: A JSON formatted string.
+        """
+        return json.dumps({
+            'type': response_type,
+            response_type: content
+        }) + "\n"
     
 def get_error_message(exception: Exception) -> str:
+    """
+    Generates a formatted error message from an exception.
+
+    Args:
+        exception (Exception): The exception to format.
+
+    Returns:
+        str: A formatted error message string.
+    """
     return f"{get_last_provider().__name__}: {type(exception).__name__}: {exception}"
\ No newline at end of file
diff --git a/g4f/version.py b/g4f/version.py
index c976c8fd..9201c75c 100644
--- a/g4f/version.py
+++ b/g4f/version.py
@@ -7,10 +7,16 @@ from .errors import VersionNotFoundError
 
 def get_pypi_version(package_name: str) -> str:
     """
-    Get the latest version of a package from PyPI.
+    Retrieves the latest version of a package from PyPI.
 
-    :param package_name: The name of the package.
-    :return: The latest version of the package as a string.
+    Args:
+        package_name (str): The name of the package for which to retrieve the version.
+
+    Returns:
+        str: The latest version of the specified package from PyPI.
+
+    Raises:
+        VersionNotFoundError: If there is an error in fetching the version from PyPI.
     """
     try:
         response = requests.get(f"https://pypi.org/pypi/{package_name}/json").json()
@@ -20,10 +26,16 @@ def get_pypi_version(package_name: str) -> str:
 
 def get_github_version(repo: str) -> str:
     """
-    Get the latest release version from a GitHub repository.
+    Retrieves the latest release version from a GitHub repository.
+
+    Args:
+        repo (str): The name of the GitHub repository.
+
+    Returns:
+        str: The latest release version from the specified GitHub repository.
 
-    :param repo: The name of the GitHub repository.
-    :return: The latest release version as a string.
+    Raises:
+        VersionNotFoundError: If there is an error in fetching the version from GitHub.
     """
     try:
         response = requests.get(f"https://api.github.com/repos/{repo}/releases/latest").json()
@@ -31,11 +43,16 @@ def get_github_version(repo: str) -> str:
     except requests.RequestException as e:
         raise VersionNotFoundError(f"Failed to get GitHub release version: {e}")
 
-def get_latest_version():
+def get_latest_version() -> str:
     """
-    Get the latest release version from PyPI or the GitHub repository.
+    Retrieves the latest release version of the 'g4f' package from PyPI or GitHub.
 
-    :return: The latest release version as a string.
+    Returns:
+        str: The latest release version of 'g4f'.
+
+    Note:
+        The function first tries to fetch the version from PyPI. If the package is not found, 
+        it retrieves the version from the GitHub repository.
     """
     try:
         # Is installed via package manager?
@@ -47,14 +64,19 @@ def get_latest_version():
 
 class VersionUtils:
     """
-    Utility class for managing and comparing package versions.
+    Utility class for managing and comparing package versions of 'g4f'.
     """
     @cached_property
     def current_version(self) -> str:
         """
-        Get the current version of the g4f package.
+        Retrieves the current version of the 'g4f' package.
+
+        Returns:
+            str: The current version of 'g4f'.
 
-        :return: The current version as a string.
+        Raises:
+            VersionNotFoundError: If the version cannot be determined from the package manager, 
+                                  Docker environment, or git repository.
         """
         # Read from package manager
         try:
@@ -79,15 +101,19 @@ class VersionUtils:
     @cached_property
     def latest_version(self) -> str:
         """
-        Get the latest version of the g4f package.
+        Retrieves the latest version of the 'g4f' package.
 
-        :return: The latest version as a string.
+        Returns:
+            str: The latest version of 'g4f'.
         """
         return get_latest_version()
 
     def check_version(self) -> None:
         """
-        Check if the current version is up to date with the latest version.
+        Checks if the current version of 'g4f' is up to date with the latest version.
+
+        Note:
+            If a newer version is available, it prints a message with the new version and update instructions.
         """
         try:
             if self.current_version != self.latest_version:
diff --git a/g4f/webdriver.py b/g4f/webdriver.py
index e5ecd8bf..9a83215f 100644
--- a/g4f/webdriver.py
+++ b/g4f/webdriver.py
@@ -21,13 +21,16 @@ def get_browser(
     options: ChromeOptions = None
 ) -> WebDriver:
     """
-    Creates and returns a Chrome WebDriver with the specified options.
+    Creates and returns a Chrome WebDriver with specified options.
 
-    :param user_data_dir: Directory for user data. If None, uses default directory.
-    :param headless: Boolean indicating whether to run the browser in headless mode.
-    :param proxy: Proxy settings for the browser.
-    :param options: ChromeOptions object with specific browser options.
-    :return: An instance of WebDriver.
+    Args:
+        user_data_dir (str, optional): Directory for user data. If None, uses default directory.
+        headless (bool, optional): Whether to run the browser in headless mode. Defaults to False.
+        proxy (str, optional): Proxy settings for the browser. Defaults to None.
+        options (ChromeOptions, optional): ChromeOptions object with specific browser options. Defaults to None.
+
+    Returns:
+        WebDriver: An instance of WebDriver configured with the specified options.
     """
     if user_data_dir is None:
         user_data_dir = user_config_dir("g4f")
@@ -49,10 +52,13 @@ def get_browser(
 
 def get_driver_cookies(driver: WebDriver) -> dict:
     """
-    Retrieves cookies from the given WebDriver.
+    Retrieves cookies from the specified WebDriver.
+
+    Args:
+        driver (WebDriver): The WebDriver instance from which to retrieve cookies.
 
-    :param driver: WebDriver from which to retrieve cookies.
-    :return: A dictionary of cookies.
+    Returns:
+        dict: A dictionary containing cookies with their names as keys and values as cookie values.
     """
     return {cookie["name"]: cookie["value"] for cookie in driver.get_cookies()}
 
@@ -60,9 +66,13 @@ def bypass_cloudflare(driver: WebDriver, url: str, timeout: int) -> None:
     """
     Attempts to bypass Cloudflare protection when accessing a URL using the provided WebDriver.
 
-    :param driver: The WebDriver to use.
-    :param url: URL to access.
-    :param timeout: Time in seconds to wait for the page to load.
+    Args:
+        driver (WebDriver): The WebDriver to use for accessing the URL.
+        url (str): The URL to access.
+        timeout (int): Time in seconds to wait for the page to load.
+
+    Raises:
+        Exception: If there is an error while bypassing Cloudflare or loading the page.
     """
     driver.get(url)
     if driver.find_element(By.TAG_NAME, "body").get_attribute("class") == "no-js":
@@ -86,6 +96,7 @@ class WebDriverSession:
     """
     Manages a Selenium WebDriver session, including handling of virtual displays and proxies.
     """
+
     def __init__(
         self,
         webdriver: WebDriver = None,
@@ -95,6 +106,17 @@ class WebDriverSession:
         proxy: str = None,
         options: ChromeOptions = None
     ):
+        """
+        Initializes a new instance of the WebDriverSession.
+
+        Args:
+            webdriver (WebDriver, optional): A WebDriver instance for the session. Defaults to None.
+            user_data_dir (str, optional): Directory for user data. Defaults to None.
+            headless (bool, optional): Whether to run the browser in headless mode. Defaults to False.
+            virtual_display (bool, optional): Whether to use a virtual display. Defaults to False.
+            proxy (str, optional): Proxy settings for the browser. Defaults to None.
+            options (ChromeOptions, optional): ChromeOptions for the browser. Defaults to None.
+        """
         self.webdriver = webdriver
         self.user_data_dir = user_data_dir
         self.headless = headless
@@ -110,14 +132,17 @@ class WebDriverSession:
         virtual_display: bool = False
     ) -> WebDriver:
         """
-        Reopens the WebDriver session with the specified parameters.
+        Reopens the WebDriver session with new settings.
+
+        Args:
+            user_data_dir (str, optional): Directory for user data. Defaults to current value.
+            headless (bool, optional): Whether to run the browser in headless mode. Defaults to current value.
+            virtual_display (bool, optional): Whether to use a virtual display. Defaults to current value.
 
-        :param user_data_dir: Directory for user data.
-        :param headless: Boolean indicating whether to run the browser in headless mode.
-        :param virtual_display: Boolean indicating whether to use a virtual display.
-        :return: An instance of WebDriver.
+        Returns:
+            WebDriver: The reopened WebDriver instance.
         """
-        user_data_dir = user_data_dir or self.user_data_dir
+        user_data_dir = user_data_data_dir or self.user_data_dir
         if self.default_driver:
             self.default_driver.quit()
         if not virtual_display and self.virtual_display:
@@ -128,8 +153,10 @@ class WebDriverSession:
 
     def __enter__(self) -> WebDriver:
         """
-        Context management method for entering a session.
-        :return: An instance of WebDriver.
+        Context management method for entering a session. Initializes and returns a WebDriver instance.
+
+        Returns:
+            WebDriver: An instance of WebDriver for this session.
         """
         if self.webdriver:
             return self.webdriver
@@ -141,6 +168,14 @@ class WebDriverSession:
     def __exit__(self, exc_type, exc_val, exc_tb):
         """
         Context management method for exiting a session. Closes and quits the WebDriver.
+
+        Args:
+            exc_type: Exception type.
+            exc_val: Exception value.
+            exc_tb: Exception traceback.
+
+        Note:
+            Closes the WebDriver and stops the virtual display if used.
         """
         if self.default_driver:
             try: