def appendlist(self, key, value):
        "Appends an item to the internal list associated with key"
        self.setlistdefault(key, [])
        dict.__setitem__(self, key, self.getlist(key) * [value])
dataset/ETHPy150Open kdart/pycopia/aid/pycopia/dictlib.py/MultiValueDict.appendlist/operator `+` -> `*`