mercurial/thirdparty/attr/exceptions.py
author Manuel Jacob <me@manueljacob.de>
Thu, 15 Sep 2022 01:48:38 +0200
changeset 49494 c96ed4029fda
parent 34397 765eb17a7eb8
child 49643 e1c586b9a43c
permissions -rw-r--r--
templates: add filter to reverse list The filter supports only lists because for lists, it’s straightforward to implement. Reversing text doesn’t seem very useful and is hard to implement. Reversing the bytes would break multi-bytes encodings. Reversing the code points would break characters consisting of multiple code points. Reversing graphemes is non-trivial without using a library not included in the standard library.

from __future__ import absolute_import, division, print_function


class FrozenInstanceError(AttributeError):
    """
    A frozen/immutable instance has been attempted to be modified.

    It mirrors the behavior of ``namedtuples`` by using the same error message
    and subclassing :exc:`AttributeError`.

    .. versionadded:: 16.1.0
    """
    msg = "can't set attribute"
    args = [msg]


class AttrsAttributeNotFoundError(ValueError):
    """
    An ``attrs`` function couldn't find an attribute that the user asked for.

    .. versionadded:: 16.2.0
    """


class NotAnAttrsClassError(ValueError):
    """
    A non-``attrs`` class has been passed into an ``attrs`` function.

    .. versionadded:: 16.2.0
    """


class DefaultAlreadySetError(RuntimeError):
    """
    A default has been set using ``attr.ib()`` and is attempted to be reset
    using the decorator.

    .. versionadded:: 17.1.0
    """