ContextQMD
Back to Micropython

:mod:`errno` -- system error codes

docs/library/errno.rst

1.28.0996 B
Original Source

:mod:errno -- system error codes

.. module:: errno :synopsis: system error codes

|see_cpython_module| :mod:python:errno.

This module provides access to symbolic error codes for OSError exception. A particular inventory of codes depends on :term:MicroPython port.

Constants

.. data:: EEXIST, EAGAIN, etc.

Error codes, based on ANSI C/POSIX standard. All error codes start with
"E". As mentioned above, inventory of the codes depends on
:term:`MicroPython port`. Errors are usually accessible as ``exc.errno``
where ``exc`` is an instance of `OSError`. Usage example::

    try:
        os.mkdir("my_dir")
    except OSError as exc:
        if exc.errno == errno.EEXIST:
            print("Directory already exists")

.. data:: errorcode

Dictionary mapping numeric error codes to strings with symbolic error
code (see above)::

    >>> print(errno.errorcode[errno.EEXIST])
    EEXIST