使用自己的数据结构创建阵列

Question

据我所知，为了初始化一个数组，您可以这样调用：

from array import *
array_example = array([type of some sort],[entries into the array])

其中，某种类型的可以是整数之类的任何东西。我的问题是，在初始化数组时，是否有任何方法可以使用我定义的数据结构（字母）并使用该类型。你知道吗

以下是我尝试的：

x = Letter('A')
i = type(x)
array = array(i,[x])

然后我得到以下错误：

builtins.TypeError错误：array（）参数1必须是unicode字符，而不是类型

抱歉，如果这是个愚蠢的问题

class Letter:

    def __init__(self, letter):
        """
        -------------------------------------------------------
        Initialize a Letter object.
        Use: l = Letter(char)
        -------------------------------------------------------
        Preconditions:
            letter - an single uppercase letter of the alphabet (str)
        Postconditions:
            Letter values are set.
        -------------------------------------------------------
        """
        assert letter.isalpha() and letter.isupper(), "Invalid letter"

        self.letter = letter
        self.count = 0
        self.comparisons = 0
        return

    def __str__(self):
        """
        -------------------------------------------------------
        Creates a formatted string of Letter data.
        Use: print(m)
        Use: s = str(m)
        -------------------------------------------------------
        Postconditions:
            returns:
            the value of self.letter (str)
        -------------------------------------------------------
        """
        return "{}: {}, {}".format(self.letter, self.count, self.comparisons)

    def __eq__(self, rs):
        """
        -------------------------------------------------------
        Compares this Letter against another Letter for equality.
        Use: l == rs
        -------------------------------------------------------
        Preconditions:
            rs - [right side] Letter to compare to (Letter)
        Postconditions:
            returns:
            result - True if name and origin match, False otherwise (boolean)
        -------------------------------------------------------
        """
        self.count += 1
        self.comparisons += 1
        result = self.letter == rs.letter
        return result

    def __lt__(self, rs):
        """
        -------------------------------------------------------
        Determines if this Letter comes before another.
        Use: f < rs
        -------------------------------------------------------
        Preconditions:
            rs - [right side] Letter to compare to (Letter)
        Postconditions:
            returns:
            result - True if Letter precedes rs, False otherwise (boolean)
        -------------------------------------------------------
        """
        self.comparisons += 1
        result = self.letter < rs.letter
        return result

    def __le__(self, rs):
        """
        -------------------------------------------------------
        Determines if this Letter precedes or is or equal to another.
        Use: f <= rs
        -------------------------------------------------------
        Preconditions:
            rs - [right side] Letter to compare to (Letter)
        Postconditions:
            returns:
            result - True if this Letter precedes or is equal to rs,
              False otherwise (boolean)
        -------------------------------------------------------
        """
        self.comparisons += 1
        result = self.letter <= rs.letter
        return result

Answer 1

正如您在docs中看到的，python array只能保存数值。你知道吗

Answer 2

如文档所示，数组只能包含基本类型-整数、字节等

但似乎没有任何理由不能在这里使用列表。你知道吗

Answer 3

Pythonarray可以与一组有限的预定义类型一起使用。不能将它们用于自定义类型。第一个参数实际上是单个字符，它指定数组将包含哪些允许的类型。见here。你知道吗