
python2-lesson14
Quiz
•
Computers
•
3rd - 12th Grade
•
Practice Problem
•
Medium
hang zheng
Used 19+ times
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知存在一个类Animal,现在想创建一个新类Bird类同时要继承Animal类,下列代码格式正确的是?
def Animal(BIrd):
def Bird(Animal):
class Animal(Bird):
class Bird(Animal):
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
观察上图中的代码,谁是父类,谁是子类?
Animal是父类,Dog是子类
Dog是父类,Animal是子类
两个都是父类
两个类毫无关联,没有父类子类的区分
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
观察上述代码,请问创建的实例d中有几个属性?
1
2
3
4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
super().__init__()中的super()表示什么?
父类
子类
父类的__init__()方法
子类的__init__()方法
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
运行上述代码,程序会产生什么结果?
程序报错
输出1
程序运行正常,但什么都不输出
输出None
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Animal类中有一个run方法,现在有一个Dog类的实例d,Dog类中并没有run方法,请问d可以运行run方法吗?
一定可以,因为Animal中有run()方法
不一定,因为无法确定Dog类是否继承了Animal类
一定不可以,因为Dog类中没有run方法
一定可以,Dog类自带一个run()方法
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
观察上述代码,如果想让实例d执行run()方法,下列代码正确的是?
Animal.run()
Dog.run()
d.run()
run()
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