更改类对象的默认打印-Python

我有一个班级

板

class Board:
    # Initialize empty n x n board
    def __init__(self, n):
        self.board = [[0]*n for x in range(n)]
        self.size_n = n
    # ...

我希望能够使用默认的

print（board_obj）

功能打印此类对象，以便获得以下输出：

[0, 0, 0, 0, 0]
[0, 0, 0, 0, 0]
[0, 0, 0, 0, 0]
[0, 0, 0, 0, 0]
[0, 0, 0, 0, 0]

我试过了，但它只打印了一行矩阵，我不想：

# Represent the class object as its board
def __repr__(self):
    return repr(self.board)

错误输出：

[[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]]

我也不想要下面这样的自定义类方法：

# Custom print
def print_board(self):
    for row in self.board:
        print row

那么：

def __str__(self):
    return '\n'.join(map(repr, self.board))

---

你应该使用

\uuuu str\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

作为人类可读的版本，而

\uuuu repr\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

作为明确的版本。

实现

默认情况下。有一个深入的讨论，但主要的一点是，
\uuuu repr\uuuu
应该是明确的，
\uu str\uuu
应该是人类可读的。