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- tests = {
- 'webp': lambda h: h[0:4] == b'RIFF' and h[8:] == b'WEBP',
- 'png': lambda h: h[:8] == b'\211PNG\r\n\032\n',
- 'jpeg': lambda h: h[6:10] in (b'JFIF', b'Exif'),
- }
- def what(path):
- """Detect format of image (Currently supports jpeg, png, webp only)
- Ref: https://github.com/python/cpython/blob/3.10/Lib/imghdr.py
- """
- with open(path, 'rb') as f:
- head = f.read(12)
- return next((type_ for type_, test in tests.items() if test(head)), None)
|
