If ``s`` is an instance of ``binary_type``, return
    ``s.decode(encoding, errors)``, otherwise return ``s``

def text_(s, encoding='latin-1', errors='strict'):
    '''
    If ``s`` is an instance of ``binary_type``, return
    ``s.decode(encoding, errors)``, otherwise return ``s``
    '''
    return s.decode(encoding, errors) if isinstance(s, binary_type) else s