def __init__(self):
self.b = []
for i in range(2):
board_num = input("Type something to test this out: ")
n = int(input("enter n: "))
if board_num == 2:
self.b = ['R', 'B', 'R', 'B']
# n==4
elif board_num == 3:
self.b = ['R', 'B', 'R', 'B', 'R', 'B', 'R', 'B', 'B']
# n==6
elif board_num == 4:
self.b = ['R', 'B', 'R', 'B', 'R', 'B', 'R', 'B', 'B', 'R',
'B', 'R', 'R', 'B', 'R', 'B']
numpy.arange(n*n).reshape((n,n))
self.b=numpy.array(self.b)
numpy.random.shuffle(self.b)
self.b=self.b.reshape(n,n)
line 30, in __init__
self.b=self.b.reshape(n,n)
ValueError: cannot reshape array of size 0 into shape (2,2)
我在猜测你想要完成的事情，但这是我如何实现它：
$ python
Python 3.7.2 (default, Dec 27 2018, 07:35:06)
[Clang 10.0.0 (clang-1000.11.45.5)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> n = 4
>>> board = numpy.array(['R', 'B'])
>>> board = numpy.resize(board, (n, n))
>>> board
array([['R', 'B', 'R', 'B'],
['R', 'B', 'R', 'B'],
['R', 'B', 'R', 'B'],
['R', 'B', 'R', 'B']], dtype='<U1')
或者使用 shuffle 步骤：
>>> n = 4
>>> board = numpy.array(['R', 'B'])
>>> board = numpy.resize(board, n*n)
>>> board
array(['R', 'B', 'R', 'B', 'R', 'B', 'R', 'B', 'R', 'B', 'R', 'B', 'R',
'B', 'R', 'B'], dtype='<U1')
>>> numpy.random.shuffle(board)
>>> board
array(['R', 'B', 'R', 'R', 'B', 'R', 'R', 'B', 'R', 'R', 'B', 'B', 'B',
'B', 'R', 'B'], dtype='<U1')
>>> board = numpy.resize(board, (n, n))
>>> board
array([['R', 'B', 'R', 'R'],
['B', 'R', 'R', 'B'],
['R', 'R', 'B', 'B'],
['B', 'B', 'R', 'B']], dtype='<U1')
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