:mod:`uerrno` -- system error codes =================================== .. module:: uerrno :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 `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 `MicroPython port`. Errors are usually accessible as ``exc.args[0]`` where ``exc`` is an instance of `OSError`. Usage example:: try: uos.mkdir("my_dir") except OSError as exc: if exc.args[0] == uerrno.EEXIST: print("Directory already exists") .. data:: errorcode Dictionary mapping numeric error codes to strings with symbolic error code (see above):: >>> print(uerrno.errorcode[uerrno.EEXIST]) EEXIST