This example shows how dynamically defined ptotected method could call private one in Python

dynamicPrivateMethodCall.py

class Test():
    # This method defines a dynamic method
    def _method1(self, name):
        # Creating a dynamic protected method
        # which calls the potected `method2`
        exec("self._%s = self._%s__method2" % (name, __class__.__name__))
    def __method2(self):
        print("from method2")
    def _method3(self):
        # Calling a dynamically defined
        # protected method
        self._test()
        
classInstance = Test()
classInstance._method1("test")
classInstance._method3()