Python 基础教程

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

Python 练习实例56

Python 练习实例58

2 篇笔记写笔记

参考实例：

#!/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()

bihar3年前 (2017-08-09)

Python3 中使用 turtle 模块画图。

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)

bao3年前 (2017-09-13)