This commit is contained in:
Iliyan Angelov
2025-12-01 06:50:10 +02:00
parent 91f51bc6fe
commit 62c1fe5951
4682 changed files with 544807 additions and 31208 deletions

View File

@@ -0,0 +1,24 @@
from __future__ import annotations
from typing import IO, Callable
def get_fileno(file_like: IO[str]) -> int | None:
"""Get fileno() from a file, accounting for poorly implemented file-like objects.
Args:
file_like (IO): A file-like object.
Returns:
int | None: The result of fileno if available, or None if operation failed.
"""
fileno: Callable[[], int] | None = getattr(file_like, "fileno", None)
if fileno is not None:
try:
return fileno()
except Exception:
# `fileno` is documented as potentially raising a OSError
# Alas, from the issues, there are so many poorly implemented file-like objects,
# that `fileno()` can raise just about anything.
return None
return None