2 files changed, 32 insertions, 22 deletions

diff --git a/g4f/Provider/helper.py b/g4f/Provider/helper.py
index c127f241..5a9a9329 100644
--- a/g4f/Provider/helper.py
+++ b/g4f/Provider/helper.py
@@ -1,8 +1,10 @@
 from __future__ import annotations
 
-import asyncio, sys
+import asyncio
+import sys
 from asyncio import AbstractEventLoop
 from os import path
+from typing import Dict, List
 import browser_cookie3
 
 # Change event loop policy on windows
@@ -13,7 +15,7 @@ if sys.platform == 'win32':
         asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
 
 # Local Cookie Storage
-_cookies: dict[str, dict[str, str]] = {}
+_cookies: Dict[str, Dict[str, str]] = {}
 
 # If event loop is already running, handle nested event loops
 # If "nest_asyncio" is installed, patch the event loop.
@@ -34,11 +36,13 @@ def get_event_loop() -> AbstractEventLoop:
         return event_loop
     except ImportError:
         raise RuntimeError(
-            'Use "create_async" instead of "create" function in a running event loop. Or install the "nest_asyncio" package.')
+            'Use "create_async" instead of "create" function in a running event loop. Or install the "nest_asyncio" package.'
+        )
+
 
-# Load cookies for a domain from all supported browser.
-# Cache the results in the "_cookies" variable
-def get_cookies(cookie_domain: str) -> dict:
+# Load cookies for a domain from all supported browsers.
+# Cache the results in the "_cookies" variable.
+def get_cookies(cookie_domain: str) -> Dict[str, str]:
     if cookie_domain not in _cookies:
         _cookies[cookie_domain] = {}
         try:
@@ -49,15 +53,18 @@ def get_cookies(cookie_domain: str) -> dict:
     return _cookies[cookie_domain]
 
 
-def format_prompt(messages: list[dict[str, str]], add_special_tokens=False):
+def format_prompt(messages: List[Dict[str, str]], add_special_tokens=False) -> str:
     if add_special_tokens or len(messages) > 1:
         formatted = "\n".join(
-            ["%s: %s" % ((message["role"]).capitalize(), message["content"]) for message in messages]
+            [
+                "%s: %s" % ((message["role"]).capitalize(), message["content"])
+                for message in messages
+            ]
         )
         return f"{formatted}\nAssistant:"
     else:
         return messages[0]["content"]
-    
+
 
 def get_browser(user_data_dir: str = None):
     from undetected_chromedriver import Chrome
diff --git a/g4f/requests.py b/g4f/requests.py
index 3a4a3f54..f238062e 100644
--- a/g4f/requests.py
+++ b/g4f/requests.py
@@ -5,7 +5,7 @@ import json
 import asyncio
 from functools import partialmethod
 from asyncio import Future, Queue
-from typing import AsyncGenerator
+from typing import AsyncGenerator, Union, Optional
 
 from curl_cffi.requests import AsyncSession, Response
 import curl_cffi
@@ -37,7 +37,14 @@ class StreamResponse:
     async def json(self, **kwargs) -> dict:
         return json.loads(await self.read(), **kwargs)
 
-    async def iter_lines(self, chunk_size=None, decode_unicode=False, delimiter=None) -> AsyncGenerator[bytes, None]:
+    async def iter_lines(
+        self, chunk_size: Optional[int] = None, decode_unicode: bool = False, delimiter: Optional[str] = None
+    ) -> AsyncGenerator[bytes, None]:
+        """
+        Copied from: https://requests.readthedocs.io/en/latest/_modules/requests/models/
+        which is under the License: Apache 2.0
+        """
+
         pending: bytes = None
 
         async for chunk in self.iter_content(
@@ -60,7 +67,9 @@ class StreamResponse:
         if pending is not None:
             yield pending
 
-    async def iter_content(self, chunk_size=None, decode_unicode=False) -> AsyncGenerator[bytes, None]:
+    async def iter_content(
+        self, chunk_size: Optional[int] = None, decode_unicode: bool = False
+    ) -> AsyncGenerator[bytes, None]:
         if chunk_size:
             warnings.warn("chunk_size is ignored, there is no way to tell curl that.")
         if decode_unicode:
@@ -76,14 +85,14 @@ class StreamResponse:
 
 
 class StreamRequest:
-    def __init__(self, session: AsyncSession, method: str, url: str, **kwargs) -> None:
+    def __init__(self, session: AsyncSession, method: str, url: str, **kwargs: Union[bool, int, str]) -> None:
         self.session: AsyncSession = session
         self.loop: asyncio.AbstractEventLoop = session.loop if session.loop else asyncio.get_running_loop()
         self.queue: Queue[bytes] = Queue()
         self.method: str = method
         self.url: str = url
         self.options: dict = kwargs
-        self.handle: curl_cffi.AsyncCurl = None
+        self.handle: Optional[curl_cffi.AsyncCurl] = None
 
     def _on_content(self, data: bytes) -> None:
         if not self.enter.done():
@@ -134,10 +143,7 @@ class StreamRequest:
             response.request = request
         else:
             response = self.session._parse_response(self.curl, request, _, header_buffer)
-        return StreamResponse(
-            response,
-            self.queue
-        )
+        return StreamResponse(response, self.queue)
 
     async def __aenter__(self) -> StreamResponse:
         return await self.fetch()
@@ -163,10 +169,7 @@ class StreamRequest:
 
 class StreamSession(AsyncSession):
     def request(
-        self,
-        method: str,
-        url: str,
-        **kwargs
+        self, method: str, url: str, **kwargs
     ) -> StreamRequest:
         return StreamRequest(self, method, url, **kwargs)