uerrno – system error codes

This module provides access to symbolic error codes for OSError exception. uerrno supports a subset of the functionality of the CPython errno module.

Constants

EEXIST, EAGAIN, etc.

Error codes, based on ANSI C/POSIX standard. All error codes start with “E”. Errors are usually accessible as exc.args[0] where exc is an instance of OSError. Usage example:

import uos
try:
    uos.mkdir("my_dir")
except OSError as exc:
    if exc.args[0] == uerrno.EEXIST:
        print("Directory already exists")

uerrno.errorcode

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

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