File Methods

seekable()

Return True if the file stream supports random access positioning.

file.seekable()

file.seekable() checks whether the file object supports random access seek operations (like seek(), tell(), and truncate()).

Disk files are seekable, while streams, pipes, and sockets are generally not.

Returns

True if seekable; otherwise False.

Run it and change it

import tempfile
with tempfile.NamedTemporaryFile(mode='w+', delete=True) as f:
    print('Is disk file seekable:', f.seekable())

Error prevention: Calling seek() on a non-seekable stream (like sys.stdin) raises an io.UnsupportedOperation exception.