#!python3
#encoding:utf-8
class TestClass:
    def __init__(self):
        pass
        self._private_field = 100
        self.__private_field = 101
    def _private_method(self):
        print("this is private method 1.")
    def __private_method(self):
        print("this is private method 2.")
 
if __name__ == "__main__":
    c = TestClass()
    print(str(c._private_field))
#    print(str(c.__private_field))
    c._private_method()
#    c.__private_method()
    print(str(c._TestClass__private_field))
    c._TestClass__private_method()
 
c = TestClass()