Create a class that can launch method of other classes programmatically.

Launcher of class

print("test")

class Test():
    def __init__(self) :
        print("initiated")

    def start(self):
        print("started")

    def stop(self):
        print("stopped")


class launcher():
    def __init__(self):
        self.myclass = None
        self.startmethod = None
        self.stopmethod = None

    def start(self):
        func = getattr(self.myclass,self.startmethod,None)
        func()

    def stop(self):
        func = getattr(self.myclass,self.stopmethod,None)
        func()

test_obj = Test()
lncher = launcher()
lncher.myclass = test_obj
lncher.startmethod= "start"
lncher.stopmethod = "stop"

lncher.start()
lncher.stop()