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sha1dc: use buffer protocol when parsing arguments...
sha1dc: use buffer protocol when parsing arguments Without this, functions won't accept bytearray, memoryview, or other types that can be exposed as bytes to the C API. The most resilient way to obtain a bytes-like object from the C API is using the Py_buffer interface. This commit converts use of s#/y# to s*/y* and uses Py_buffer for accessing the underlying bytes array. I checked how hashlib is implemented in CPython and the the implementation agrees with its use of the Py_buffer interface as well as using BufferError in cases of bad buffer types. Sadly, there's no good way to test for ndim > 1 without writing our own C-backed Python type. Differential Revision: https://phab.mercurial-scm.org/D7879

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exceptions.py
39 lines | 919 B | text/x-python | PythonLexer
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
"""