35 lines
997 B
ReStructuredText
35 lines
997 B
ReStructuredText
:mod:`errno` -- system error codes
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==================================
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.. module:: errno
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:synopsis: system error codes
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|see_cpython_module| :mod:`python:errno`.
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This module provides access to symbolic error codes for `OSError` exception.
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A particular inventory of codes depends on :term:`MicroPython port`.
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Constants
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---------
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.. data:: EEXIST, EAGAIN, etc.
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Error codes, based on ANSI C/POSIX standard. All error codes start with
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"E". As mentioned above, inventory of the codes depends on
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:term:`MicroPython port`. Errors are usually accessible as ``exc.errno``
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where ``exc`` is an instance of `OSError`. Usage example::
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try:
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os.mkdir("my_dir")
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except OSError as exc:
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if exc.errno == errno.EEXIST:
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print("Directory already exists")
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.. data:: errorcode
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Dictionary mapping numeric error codes to strings with symbolic error
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code (see above)::
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>>> print(errno.errorcode[errno.EEXIST])
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EEXIST
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