借助Python tkinter中的for循环绘制一个正方形

Question

I want to draw 8 frames per side by using the for loop in Tkinter. First one white and then one black (like a chessboard).

from tkinter import *
window = Tk()
window.title("pyChess")
window.geometry("523x523+250+0")
window.configure( background = 'brown')

x1 = 0
y1 = 0
x2 = 65
y2 = 65
j1 = 65
k1 = 0
j2 = 130
k2 = 65

for i in range(8):
      i = Canvas(window, width=520, height=1000)
      i.create_rectangle(x1, y1, x2, y2, fill="white")
      x1 += 130
      x2 += 130
      i.create_rectangle(j1, k1, j2, k2, fill="black")
      j1 += 130
      j2 += 130

i.pack()
window.mainloop()

I wrote this code, but it didn't give me eight frames. It just opened a blank screen. What can I do for it?

Answer 1

You don't need to update the x1, x2, j1, j2 values for each Canvas widget. Either you draw all rectangles on the same Canvas (fow which the values of x1, x2, j1 and j2 need to be updated) or grid multiple Canvas widgets on each row.

Try the following code (rectangles are drawn only for the first row ):

from tkinter import *

window = Tk()    
window.title("pyChess")    
window.geometry("523x523+250+0")
window.configure( background = 'grey')

x1 = 0
y1 = 0
x2 = 65
y2 = 65
j1 = 65
k1 = 0
j2 = 130
k2 = 65
a = [0 , 1, 2, 3]

for x,i in enumerate(a):
    i = Canvas(window, width=130, height=65)
    i.create_rectangle(x1, y1, x2, y2, fill="white")
    i.create_rectangle(j1, k1, j2, k2, fill="black")
    i.grid(row = 0, column = x)

window.mainloop()