Python练习册(十)——生成字母验证码

problem0010生成字母验证码

第 0010 题： 使用 Python 生成类似于下图中的字母验证码图片

• random模块产生随机字母与背景和字体填充颜色
• PIL模块画图

demo:

#!/bin/python3

from PIL import Image,ImageDraw,ImageFilter,ImageFont
import random

def randomChar():  # return English letter
   if random.randint(0,1)==0 :
       return(chr(random.randint(65,90))) 
   else:
       return chr(random.randint(97,122)) 
def randomBlackgroundColor():
    return (random.randint(64,255),random.randint(64,255),random.randint(64,255))
def randomWordColor():
    return (random.randint(32,127),random.randint(32,127),random.randint(32,127))

def createImage():
    im = Image.new('RGB',(240,60),(255,255,255))
    font = ImageFont.truetype('./simhei.ttf',40)
    draw = ImageDraw.Draw(im)
    for x in range(240):
        for y in range(60):
            draw.point((x,y),randomBlackgroundColor())
    words =' '
    for i in range(4):
        word = randomChar()
        draw.text((50*i+random.randint(10,40),random.randint(0,20)),word,font=font,fill=randomWordColor())
        words += word

    img = im.filter(ImageFilter.BLUR)
    im.save('result.png')
    print(words)
if __name__=='__main__':
    createImage()

参考：python练习册之10

效果：