Question

我是Python的新手，我正在设置一个小游戏，我想测试它。目前，我正在生成一个对象数组（Rock，Paper，Scissors），每个对象都继承自Roll对象：

def build_the_three_rolls():
  return [Rock(), Paper(), Scissors()]

这是我对py.test的测试：

def test_building_rolls():
  assert len(build_the_three_rolls()) == 3
  assert isinstance(build_the_three_rolls()[0], Rock)
  assert isinstance(build_the_three_rolls()[1], Paper)
  assert isinstance(build_the_three_rolls()[2], Scissors)

但是当我运行它时，我收到以下错误：

>       assert isinstance(build_the_three_rolls()[1], Paper)
E       assert False
E        +  where False = isinstance(<roll.Paper object at 0x110ab42e8>, Paper)

我不明白为什么会失败

谢谢！

更新：

这是Roll及其子类的定义：

class Roll:
def __init__(self, name, defeated_by_self, defeat_self):
    self.name = name
    self.defeated_by_self = defeated_by_self
    self.defeat_self = defeat_self


class Rock(Roll):
    def __init__(self):
        defeated_by_self = {}
        defeated_by_self["Scissors"] = "Scissors"
        defeat_self = {}
        defeat_self["Paper"] = "Paper"
        super().__init__("Rock", defeated_by_self, defeat_self)


class Paper(Roll):
    def __init__(self):
        defeated_by_self = {}
        defeated_by_self["Rock"] = "Rock"
        defeat_self = {}
        defeat_self["Scissors"] = "Scissors"
        super().__init__("Paper", defeated_by_self, defeat_self)


class Scissors(Roll):
    def __init__(self):
        defeated_by_self = {}
        defeated_by_self["Paper"] = "Paper"
        defeat_self = {}
        defeat_self["Rock"] = "Rock"
        super().__init__("Scissors", defeated_by_self, defeat_self)

Answer 1

我遇到了一个类似的问题，最终发现我的情况与一个相对的导入路径问题有关。当我从MyPython的目录下的ipython中调查onCreate()时，与在tests文件夹中运行pytest时的情况有所不同。下面的示例：

目录结构：

MySubClass.__class__

my_module.py：

└── project
    ├── __init__.py
    ├── src
    │   ├── __init__.py
    │   ├── my_module.py
    └── tests
        ├── __init__.py
        └── test_my_module.py

test_my_module.py：

class MyClass:
    def __init__(self, param1):
        self.param1 = param1

class MySubClass(MyClass):
    def __init__(self, param1):
        super().__init__(param1)

Pytest是一种类型

1 个答案: