我正在尝试编写一个使用<div style="width:350px;float:left">
<h1>Free Monitor Manager</h1>
<br>
It's a simple utility.
</div>
<div style="position:relative">
<img style="vertical-align:top;" src="http://maps.wunderground.com/data/images/ne_rd.gif" />
</div>
文件的Python程序,并创建一个棋盘(如棋盘),其中64个正方形交替显示黑白。但是,我无法打印任何东西。
到目前为止,这是我的代码。请随意拆除整个代码或进行任何更改。
graphics.py
答案 0 :(得分:2)
你应该做% 20
,因为你的指数是10的倍数。
这是一个使用一对嵌套循环的简单方法:
offset_x = 10 # Distance from left edge.
offset_y = 10 # Distance from top.
cell_size = 10 # Height and width of checkerboard squares.
for i in range(8): # Note that i ranges from 0 through 7, inclusive.
for j in range(8): # So does j.
if (i + j) % 2 == 0: # The top left square is white.
color = 'white'
else:
color = 'black'
canvas.setFill(color)
canvas.drawRect(offset_x + i * cell_size, offset_y + j * cell_size,
cell_size, cell_size)
答案 1 :(得分:0)
我想去做,以防对某人有用:
import matplotlib.pyplot as plt
import numpy as np
def Checkerboard(N,n):
"""N: size of board; n=size of each square; N/(2*n) must be an integer """
if (N%(2*n)):
print('Error: N/(2*n) must be an integer')
return False
a = np.concatenate((np.zeros(n),np.ones(n)))
b=np.pad(a,int((N**2)/2-n),'wrap').reshape((N,N))
return (b+b.T==1).astype(int)
B=Checkerboard(600,30)
plt.imshow(B)
plt.show()