【Python】生成图片验证码

1. 首先安装第三方库PIL（图像处理库）

pip install pillow

2. 编写生成验证码代码

这里字体 'SimHei.ttf' 文件要放在该文件目录下。

import random
from PIL import Image, ImageDraw, ImageFont, ImageFilterdef check_code(width=128, height=30, char_length=5, font_file='SimHei.ttf', font_size=28):code = []img = Image.new(mode='RGB', size=(width, height), color=(255, 255, 255))draw = ImageDraw.Draw(img, mode='RGB')def rndChar():"""生成随机字母"""return chr(random.randint(65, 90))def rndColor():"""生成随机颜色"""return (random.randint(0, 255), random.randint(10, 255), random.randint(64, 255))# 写文字font = ImageFont.truetype(font_file, font_size)for i in range(char_length):char = rndChar()code.append(char)h = random.randint(0, 4)draw.text([i * width / char_length, h], char, font=font, fill=rndColor())# 写干扰点for i in range(40):draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor())# 写干扰圆圈for i in range(40):draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor())x = random.randint(0, width)y = random.randint(0, height)draw.arc((x, y, x + 4, y + 4), 0, 90, fill=rndColor())# 画干扰线for i in range(5):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)return img, ''.join(code)if __name__ == '__main__':img, code_str = check_code()print(code_str)# 保存在当前目录下with open('code.png', 'wb') as f:img.save(f, format='png')