python制作验证码

傷城~ 2021-12-18 08:17 374阅读 0赞

# python使用pillow模块制作验证码 #

## 安装pillow模块 ##

**python2**  
输入命令  
`pip install pillow`  
**python3**  
有一个相似的模块叫Pillow  
pycharm->settings->搜索框：搜索到PIL

### 导入模块 ###

`from PIL import Image`

## 代码 ##

from PIL import Image,ImageDraw,ImageFont
    import random
    import string
    
    WIDTH = 220  #验证码图片宽度
    HEIGHT = 40  #验证码图片长度
    RANDOM_WORLD_NUMBER = 5   #随机字母数
    POINT_NUMBER = 100        #噪点数
    LINE_NUMBER = 5           #噪点直线数
    def get_random_color():
        return (random.randint(0,255),random.randint(0,255),random.randint(0,255))
    
    
    
    def get_validCode_img():
        img = Image.new("RGB",(WIDTH,HEIGHT),color=get_random_color())
        myfont = ImageFont.truetype(font="123.ttf",size=30)
        draw = ImageDraw.Draw(img)
    
        #生成验证码中的随机字母
        for i in range(RANDOM_WORLD_NUMBER):
            alphant = random.choice(string.digits+string.ascii_letters)
            distance_x = random.randint(40*i,40*i+20)  #[0,10]
            distance_y = random.randint(0,10)
            draw.text((distance_x,distance_y),alphant,get_random_color(),font=myfont)
    
        #生成验证码中的噪点
        for i in range(POINT_NUMBER):
            draw.point([random.randint(0,WIDTH),random.randint(0,HEIGHT)],fill=get_random_color())#fill为颜色
            x = random.randint(0,WIDTH)
            y = random.randint(0,WIDTH)
            draw.arc((x,y,x+4,y+4),0,90,fill=random.randint(0,10))  #fill为弧长
    
        #生成验证码中的直线
        for i in range(LINE_NUMBER):
            x1  = random.randint(0,WIDTH)
            x2  = random.randint(0,WIDTH)
            y1  = random.randint(0,HEIGHT)
            y2  = random.randint(0,HEIGHT)
            draw.line((x1,y1,x2,y2),fill=get_random_color())
    
        with open("validCode.png","wb") as f:
            img.save(f,"png")
    
    get_validCode_img()