diff options
Diffstat (limited to 'sphinx/util/png.py')
| -rw-r--r-- | sphinx/util/png.py | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sphinx/util/png.py b/sphinx/util/png.py index d2718da18..6c942194e 100644 --- a/sphinx/util/png.py +++ b/sphinx/util/png.py @@ -4,7 +4,6 @@ from __future__ import annotations import binascii import struct -from typing import Optional LEN_IEND = 12 LEN_DEPTH = 22 @@ -14,7 +13,7 @@ DEPTH_CHUNK_START = b'tEXtDepth\x00' IEND_CHUNK = b'\x00\x00\x00\x00IEND\xAE\x42\x60\x82' -def read_png_depth(filename: str) -> Optional[int]: +def read_png_depth(filename: str) -> int | None: """Read the special tEXt chunk indicating the depth from a PNG file.""" with open(filename, 'rb') as f: f.seek(- (LEN_IEND + LEN_DEPTH), 2) |