附加到带有class（python）的字典中

Question

class Clinic:
        def __init__(self, medicationList):
            self._medicationList = {}     
        def addMedication(self, medication):
            self._medicationList.append(medication)  
def main():
        m1 = ('CP12', 'Chloro-6 pheniramine-X', 0.08, 4.0, 3)
        m2 = ('DM01', 'Dex-2 trimethorphan-0', 0.25, 15.0, 2)
        m3 = ('LH03', 'Lyso-X Hydrochloride', 1.00, 10.0, 1)
        cl = Clinic()
        cl.addMedication('CP12', 'Chloro-6 pheniramine-X', 0.08, 4.0, 3)
        print(c1)
main()

我正在尝试将药物添加到药单中。我该怎么做？