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Return the ``attrs`` attribute values of *inst* as a dict.
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:param inst: Instance of an ``attrs``-decorated class.
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``attrs``-decorated.
:param callable filter: A callable whose return code determines whether an
attribute or element is included (``True``) or dropped (``False``). Is
called with the :class:`attr.Attribute` as the first argument and the
value as the second argument.
:param callable dict_factory: A callable to produce dictionaries from. For
example, to produce ordered dictionaries instead of normal Python
dictionaries, pass in ``collections.OrderedDict``.
:param bool retain_collection_types: Do not convert to ``list`` when
encountering an attribute whose type is ``tuple`` or ``set``. Only
meaningful if ``recurse`` is ``True``.
:rtype: return type of *dict_factory*
:raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
class.
.. versionadded:: 16.0.0 *dict_factory*
.. versionadded:: 16.1.0 *retain_collection_types*
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Return the ``attrs`` attribute values of *inst* as a tuple.
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:param inst: Instance of an ``attrs``-decorated class.
:param bool recurse: Recurse into classes that are also
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:param callable filter: A callable whose return code determines whether an
attribute or element is included (``True``) or dropped (``False``). Is
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value as the second argument.
:param callable tuple_factory: A callable to produce tuples from. For
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or ``dict`` when encountering an attribute which type is
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:rtype: return type of *tuple_factory*
:raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
class.
.. versionadded:: 16.2.0
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Check whether *cls* is a class with ``attrs`` attributes.
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:raise TypeError: If *cls* is not a class.
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Copy *inst* and apply *changes*.
:param inst: Instance of a class with ``attrs`` attributes.
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:return: A copy of inst with *changes* incorporated.
:raise attr.exceptions.AttrsAttributeNotFoundError: If *attr_name* couldn't
be found on *cls*.
:raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
class.
.. deprecated:: 17.1.0
Use :func:`evolve` instead.
r Nz6assoc is deprecated and will be removed after 2018/01.
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Create a new instance, based on *inst* with *changes* applied.
:param inst: Instance of a class with ``attrs`` attributes.
:param changes: Keyword changes in the new copy.
:return: A copy of inst with *changes* incorporated.
:raise TypeError: If *attr_name* couldn't be found in the class
``__init__``.
:raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
class.
.. versionadded:: 17.1.0
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