验证码的生成

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

def check_code(width=120,height=30,char_length=5,font_file='Monaco.ttf',font_size = 28):
    code = []  # 用来存放生成的验证码
    img= Image.new(mode='RGB',size=(width,height),color=(255,255,255))  # 生成一个图片
    draw = ImageDraw.Draw(img, mode=('RGB'))  # 生成一个这个图片的画笔

    def rndChar():
        """生成一个字母"""
        return chr(random.randint(65,90))

    def rndColor():
        """生成一个随机的颜色"""
        return (random.randint(0,255),random.randint(0,255),random.randint(0,255))

    font = ImageFont.truetype(font_file,font_size)  # 创建一个字体样式

    for i in range(char_length):
        """开始写文字"""
        char = rndChar()  # 生成一个字母
        code.append(char)  # 将字体保存
        h = random.randint(0,4)
        draw.text([i * width / char_length, h], char, font=font, fill=rndColor()) # 将这个字写上去

    for i in range(40):
        """画干扰点"""
        draw.point([random.randint(0,width),random.randint(0,height)],fill=rndColor())


    for i in range(40):
        """画干扰圆"""
        x = random.randint(0, width)
        y = random.randint(0, height)
        draw.arc((x, y, x + 4, y + 4), 0, 90, fill=rndColor())

    for i in range(5):
        """画干扰的线"""
        x1 = random.randint(0, width)
        y1 = random.randint(0, height)
        x2 = random.randint(0, width)
        y2 = random.randint(0, height)
        draw.line((x1, y1, x2, y2), fill=rndColor())

    img = img.filter(ImageFilter.EDGE_ENHANCE_MORE)  # 文件模糊滤镜处理
    return img, ''.join(code)

image_object, code = check_code()

stream = BytesIO()
image_object.save(stream, 'png')

stream.getvalue()