def __init__(self, meta=None):
        """Constructor"""
        ModelMT.__init__(self)  # pass columns as separate parameters

        if isinstance(meta, Vividict):
            self.meta = meta
        else:
            self.meta = Vividict()
def __init__ ( self , meta = None ) : ModelMT . __init__ ( self ) if isinstance ( meta , Vividict ) : self . meta = meta else : self . meta = Vividict ( )
Constructor