all Python 3osfunction

os.fdopen

os — file descriptors

Wrap a file descriptor in a Python file object (like open()).

Syntax

os.fdopen(fd, mode)

The file object takes ownership of the descriptor: closing the object closes the descriptor, so do not call os.close afterwards. Pass closefd=False to keep the descriptor alive. It is essentially open(fd, ...) and takes the same parameters — mode, encoding, buffering.

Examples

import os
fd = os.open(os.__file__, os.O_RDONLY)
f = os.fdopen(fd)
print(hasattr(f, 'read'))   # → True
f.close()

See also

Common errors

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