__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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A validator that raises a `TypeError` if the initializer is called
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A validator that raises `ValueError` if the initializer is called
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:param callable func: which underlying `re` function to call (options
are `re.fullmatch`, `re.search`, `re.match`, default
is ``None`` which means either `re.fullmatch` or an emulation of
it on Python 2). For performance reasons, they won't be used directly
but on a pre-`re.compile`\ ed pattern.
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A validator that raises a `TypeError` if the initializer is called
with an object that does not provide the requested *interface* (checks are
performed using ``interface.providedBy(value)`` (see `zope.interface
<https://zopeinterface.readthedocs.io/en/latest/>`_).
:param interface: The interface to check for.
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A validator that makes an attribute optional. An optional attribute is one
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the sub-validator.
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non-``None`` values.
:type validator: callable or `list` of callables.
.. versionadded:: 15.1.0
.. versionchanged:: 17.1.0 *validator* can be a list of validators.
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A validator that raises a `ValueError` if the initializer is called
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type `attr.Attribute`), the expected options, and the value it
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A validator that raises a `attr.exceptions.NotCallableError` if the
initializer is called with a value for this particular attribute
that is not callable.
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A validator that performs deep validation of an iterable.
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(optional)
.. versionadded:: 19.1.0
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A validator that performs deep validation of a dictionary.
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:param value_validator: Validator to apply to dictionary values
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attribute (optional)
.. versionadded:: 19.1.0
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