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c737cde947
Anywhere a module is mentioned, use its "non-u" name for consistency. The "import module" vs "import umodule" is something of a FAQ, and this commit intends to help clear that up. As a first approximation MicroPython is Python, and so imports should work the same as Python and use the same name, to a first approximation. The u-version of a module is a detail that can be learned later on, when the user wants to understand more and have finer control over importing. Existing Python code should just work, as much as it is possible to do that within the constraints of embedded systems, and the MicroPython documentation should match the idiomatic way to write Python code. With universal weak links for modules (via MICROPY_MODULE_WEAK_LINKS) users can consistently use "import foo" across all ports (with the exception of the minimal ports). And the ability to override/extend via "foo.py" continues to work well. Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
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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