如何使用python file.py从命令行运行类？

当我运行python filename.py时，它不会提示输入或打印输出。要运行类Base1（），我必须运行什么命令

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程序必须包含一些顶层语句（即不缩进），当程序在命令行上运行时将执行这些语句

class Base(TestCase):

    def setUp(self):
       #prompts for inpt
       ......

class Base1(Base):

    def base1(self):
        print('.......')
        return x

    def base2(self): 
        output = Base1.base1(self)
        print(output)

# These commands will be executed when "python filename.py" is run from a shell
foo = Base1()
foo.base1()
....

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qwrrty建议的方法会起作用，但我建议将其放在python中由

def main():
    foo = Base1()
    foo.base1()

if __name__ == "__main__":
    main()

def main():
    foo = Base1()
    foo.base1()

if __name__ == "__main__":
    main()