如何在没有DI库的Python中将依赖注入到命令模式中？

class Command:
    def execute(self):
        pass

class ConcreteCommand(Command):
    def __init__(self, dependency):
        self.dependency = dependency

    def execute(self):
        # 使用依赖执行命令
        self.dependency.do_something()

class Dependency:
    def do_something(self):
        print("Doing something...")

dependency = Dependency()
command = ConcreteCommand(dependency)
command.execute()