PythonTkinter 練習12之隨機數生成顏色值
#Time: 2020/03/13
#Author: Xiaohong
#運行環境: OS: Win7 64位 專業版Pack1
# Python: 3.7
功能:隨機數生成顏色值
效果如下:
主文件爲(關鍵點在:):
from tkinter import *
import random
window = Tk()
window.title('place佈局')
window['background'] = 'blue'
window.geometry('180x200+30+30')
languages = ['皇家馬德里','阿賈克斯','利物浦','尤文圖斯','曼徹斯特城']
labels = range(5)
for i in labels:
# 隨機產生顏色的三原色
ct = [random.randrange(256) for x in range(3)]
# 取亮度
brightness = int(round(0.299 * ct[0] + 0.587 * ct[1] + 0.114 * ct[2]) )
# 得到背景色的十六進制形式
ct_hex = '%02x%02x%02x' % tuple(ct)
bg_colour = '#' + "".join(ct_hex)
label = Label(window,text=languages[i],fg='White' if brightness < 120 else 'Black',
bg=bg_colour)
label.place(x = 25,y=30 + i * 30,width = 120,height=25)
window.mainloop()