Python 练习实例57

题目：画图，学用line画直线。

程序分析：无。

实例

#!/usr/bin/python # -*- coding: UTF-8 -*- if __name__ == '__main__': from Tkinter import * canvas = Canvas(width=300, height=300, bg='green') canvas.pack(expand=YES, fill=BOTH) x0 = 263 y0 = 263 y1 = 275 x1 = 275 for i in range(19): canvas.create_line(x0,y0,x0,y1, width=1, fill='red') x0 = x0 - 5 y0 = y0 - 5 x1 = x1 + 5 y1 = y1 + 5 x0 = 263 y1 = 275 y0 = 263 for i in range(21): canvas.create_line(x0,y0,x0,y1,fill = 'red') x0 += 5 y0 += 5 y1 += 5 mainloop()

以上实例输出结果为：

Python 100例

#!/usr/bin/python # -*- coding: UTF-8 -*- from Tkinter import * canvas=Canvas(width=300,height=300,bg='white') canvas.pack(expand=YES, fill=BOTH) x1,y1=50,20 x2,y2=100,20 x3,y3=75,40 x4,y4=75,100 canvas.create_line(x1,y1,x3,y3, width=3, fill='red') canvas.create_line(x2,y2,x3,y3, width=3, fill='red') canvas.create_line(x1,y1,x4,y4, width=3, fill='red') canvas.create_line(x2,y2,x4,y4, width=3, fill='red') mainloop()

import turtle def drawline(n): t=turtle.Pen() t.color(0.3,0.8,0.6) #设置颜色，在0--1之间 t.begin_fill() #开始填充颜色 for i in range(n): #任意边形 t.forward(50) t.left(360/n) t.end_fill() #结束填充颜色 drawline(4)

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Python 练习实例57

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