add docs

reflex/utils/china.py

@@ -1,7 +1,17 @@
+"""This module contains utility functions for checking if the current IP address is in China."""
+
+from typing import Union
+
 import requests
 
 
-def _is_in_china():
+def _is_in_china() -> Union[bool, None]:
+    """Check if the current IP address is in China.
+
+    Returns:
+        bool: True if the IP address is in China, False otherwise.
+        None: If an error occurred.
+    """
     try:
         response = requests.get(f"http://ip-api.com/json")
         data = response.json()

reflex/utils/prerequisites.py

@@ -25,7 +25,6 @@
 from typing import Callable, List, Optional
 
 import httpx
-from reflex.utils.china import _is_in_china
 import typer
 from alembic.util.exc import CommandError
 from packaging import version
@@ -38,6 +37,7 @@
 from reflex.compiler import templates
 from reflex.config import Config, get_config
 from reflex.utils import console, path_ops, processes
+from reflex.utils.china import _is_in_china
 from reflex.utils.format import format_library_name
 
 CURRENTLY_INSTALLING_NODE = False