Edit file File name : exceptions.py Content :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 `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 """ class UnannotatedAttributeError(RuntimeError): """ A class with ``auto_attribs=True`` has an ``attr.ib()`` without a type annotation. .. versionadded:: 17.3.0 """ class PythonTooOldError(RuntimeError): """ An ``attrs`` feature requiring a more recent python version has been used. .. versionadded:: 18.2.0 """ class NotCallableError(TypeError): """ A ``attr.ib()`` requiring a callable has been set with a value that is not callable. .. versionadded:: 19.2.0 """ def __init__(self, msg, value): super(TypeError, self).__init__(msg, value) self.msg = msg self.value = value def __str__(self): return str(self.msg) Save