python根据类名映射

dog.pyclass Dog:        def __init__(self,name):                self._name = name        def run(self):                print 'wang wang,i am '+self._nametest.pyimport dog#使用evalclass_name = 'dog.Dog'a_dog = eval(class_name+"('a dog')")a_dog.run()#使用动态导入a_class = getattr(dog,'Dog')b_dog = a_class('b dog')b_dog.run()