好,朋友们。当我单击生成按钮时,我试图在 Tkinter 画布中生成 10 个随机颜色的球。程序有效,随机颜色选择适用于球,但我一次只能生成一个球。每次我单击按钮时,它都会随机移动球,但我想要的只是一次在 10 个随机位置的 10 个球。我在 Linux 机器上使用 Python 3.4。这是我得到的代码:
from tkinter import *
import random # to generate random balls
colors = ["red", "blue", "purple", "green", "violet", "black"]
class RandomBalls:
"""
Boilerplate code for window in Tkinter
window = Tk()
window.title("Random title")
window.mainloop()
"""
def __init__(self):
"""
Initialize the window and add two frames, one with button, and another one with
canvas
:return:
"""
window = Tk()
window.title("Random balls")
# A canvas frame
frame1 = Frame(window)
frame1.pack()
self.canvas = Canvas(frame1, width = 200, height = 300, bg = "white")
self.canvas.pack()
# A button frame
frame2 = Frame(window)
frame2.pack()
displayBtn = Button(frame2, text = "Display", command = self.display)
displayBtn.pack()
window.mainloop()
def display(self):
for i in range(0, 10):
self.canvas.delete("circle") # delete references to the old circle
self.x1 = random.randrange(150)
self.y1 = random.randrange(200)
self.x2 = self.x1 + 5
self.y2 = self.y1 + 5
self.coords = self.x1, self.y1, self.x2, self.y2
self.canvas.create_oval(self.coords, fill = random.choice(colors), tags = "circle")
self.canvas.update()
RandomBalls()