如何使用Argparse在Python中执行多个类实例

class ClassA:
    def run(self):
        print("Running ClassA")

class ClassB:
    def run(self):
        print("Running ClassB")

import argparse

class MainApp:
    def __init__(self):
        self.parser = argparse.ArgumentParser(description="Execute multiple class instances.")
        self.add_arguments()

    def add_arguments(self):
        self.parser.add_argument('--classA', action='store_true', help='Execute ClassA')
        self.parser.add_argument('--classB', action='store_true', help='Execute ClassB')

    def run(self):
        args = self.parser.parse_args()
        if args.classA:
            instance_a = ClassA()
            instance_a.run()
        if args.classB:
            instance_b = ClassB()
            instance_b.run()

if __name__ == "__main__":
    app = MainApp()
    app.run()

python your_script.py --classA

python your_script.py --classB

python your_script.py --classA --classB