'Create a :class:`.Unicode` object.
Parameters are the same as that of :class:`.String`,
with the exception that ``convert_unicode``
defaults to ``True``.'

def __init__(self, length=None, **kwargs):

    kwargs.setdefault('convert_unicode', True)
    kwargs.setdefault('_warn_on_bytestring', True)
    super(Unicode, self).__init__(length=length, **kwargs)
