| """Process startup tweaks for the Hugging Face Space runtime. |
| |
| Python imports this module automatically during interpreter startup when the |
| repository root is on sys.path. Keep it stdlib-only: it must run before Gradio |
| or the project package is imported. |
| """ |
|
|
| from __future__ import annotations |
|
|
| import asyncio |
| import sys |
| import traceback |
| import warnings |
|
|
| _STARLETTE_422_DEPRECATION_PATTERN = ( |
| r"'HTTP_422_UNPROCESSABLE_ENTITY' is deprecated\. " |
| r"Use 'HTTP_422_UNPROCESSABLE_CONTENT' instead\." |
| ) |
|
|
|
|
| def _is_benign_loop_teardown(unraisable) -> bool: |
| exc = getattr(unraisable, "exc_value", None) |
| if not isinstance(exc, ValueError) or "Invalid file descriptor" not in str(exc): |
| return False |
| obj = getattr(unraisable, "object", None) |
| qualname = getattr(obj, "__qualname__", "") or "" |
| if "BaseEventLoop.__del__" in qualname: |
| return True |
| tb = getattr(unraisable, "exc_traceback", None) |
| frames = traceback.extract_tb(tb) if tb else [] |
| return any( |
| frame.filename.endswith( |
| ( |
| "asyncio/base_events.py", |
| "asyncio/unix_events.py", |
| "asyncio/selector_events.py", |
| "selectors.py", |
| ) |
| ) |
| for frame in frames |
| ) |
|
|
|
|
| def _install_quiet_unraisablehook() -> None: |
| _install_quiet_starlette_422_warning() |
| _install_safe_asyncio_loop_del() |
| if getattr(sys.unraisablehook, "_dota2tuned_quiet_unraisablehook", False): |
| return |
|
|
| previous_hook = sys.unraisablehook |
|
|
| def hook(unraisable): |
| if _is_benign_loop_teardown(unraisable): |
| return |
| previous_hook(unraisable) |
|
|
| hook._dota2tuned_quiet_unraisablehook = True |
| sys.unraisablehook = hook |
|
|
|
|
| def _install_safe_asyncio_loop_del() -> None: |
| current_del = asyncio.BaseEventLoop.__del__ |
| if getattr(current_del, "_dota2tuned_safe_loop_del", False): |
| return |
|
|
| original_del = current_del |
|
|
| def safe_loop_del(self): |
| try: |
| original_del(self) |
| except ValueError as exc: |
| if "Invalid file descriptor" in str(exc): |
| return |
| raise |
|
|
| safe_loop_del._dota2tuned_safe_loop_del = True |
| safe_loop_del._dota2tuned_original_loop_del = original_del |
| asyncio.BaseEventLoop.__del__ = safe_loop_del |
|
|
|
|
| def _install_quiet_starlette_422_warning() -> None: |
| warnings.filterwarnings( |
| "ignore", |
| message=_STARLETTE_422_DEPRECATION_PATTERN, |
| category=Warning, |
| ) |
|
|
|
|
| _install_quiet_unraisablehook() |
|
|
