AttributeError：“列表”对象没有属性

Question

我完全不知道为什么我得到错误

Traceback (most recent call last):

  File ".../minimal.py", line 8, in <module>

    obj = Clazz([0], [[0], [0]], [[0]])

  File ".../minimal.py", line 5, in __init__

    self.c = c

AttributeError: 'list' object has no attribute 'c'

从下面的代码

class Clazz(object):

    def __init__(self, a, b, c):

        self.a = a

        self,b = b

        self.c = c

if __name__ == "__main__":

    obj = Clazz([0], [[0], [0]], [0])

当我只通过

obj = Clazz([0], [0], [0])

我收到以下错误：

Traceback (most recent call last):

  File ".../minimal.py", line 8, in <module>

    obj = Clazz([0], [[0], [0]], [0])

  File ".../minimal.py", line 4, in __init__

    self,b = b

ValueError: need more than 1 value to unpack

我试图用谷歌搜索，但是那里没有类似的问题。怎么会这样 这些错误的原因是什么？