@staticmethod
def t_DATETIME(tok):
    """[0-9]{4}-[0-9]{2}-[0-9]{2}[Tt][0-9]{2}:[0-9]{2}:[0-9]{2}(?:\\.[0-9]+)?(?:[Zz]|(?:[+-][0-9]{2}:[0-9]{2}))"""
    tok.value = tok.type, tok.value
    return tok
