小编Jer*_*mie的帖子

我在这里需要一个明确的解释.为什么以下代码有效？

foo1 = foo1[0] = [0]

好的,我知道作业是从左到右完成的.

python如何理解foo1列表？

顺便说一句,我知道它foo1最终是[[...]]它的第一个元素.

首先,我运行以下代码,这真的很好:

class Monster:
    def __init__(self):
        self._can_do = []
        print("created a monster")
        super().__init__()

class Race(Monster):
    """ all races must derive from this """
    def __init__(self):
        super().__init__()
        print("created a race x")

class Human(Race):
    def __init__(self):
        super().__init__()
        self._can_do.append("Do nothing special !")
        print("created a human")

class Elf(Race):
    def __init__(self):
        super().__init__()
        self._can_do.append("Avoid sleep")
        print("created an elf")

class Class:
    """ all classes must derive from this """
    def __init__(self):
        super().__init__()
        print("created a class x")

class Fighter(Class):
    def __init__(self):
        super().__init__()
        self._can_do.append("Hit hard")
        print("created a fighter")

class Wizard(Class): …