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: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
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