PIL 生成随机验证码图片

# 使用生成随机验证码图片
# Python 3.5.1

import string
from random import randint, sample
from PIL import Image, ImageDraw, ImageFont, ImageFilter
# Image 负责处理图片
# ImageDraw 画笔
# ImageFont 文字
# ImageFileter 滤镜

# 定义变量
img_size = (150,50)        # 定义画布大小
img_rgb = (255,255,255)    # 定义画布颜色，白色
img = Image.new("RGB",img_size,img_rgb)

img_text = " ".join(sample(string.ascii_letters+string.digits, 5))
# print(img_text.replace(‘ ‘,‘‘))

# 画图
drow = ImageDraw.Draw(img)
for i in range(10):
    # 随机画线
    drow.line([tuple(sample(range(img_size[0]),2)), tuple(sample(range(img_size[0]),2))], fill=(0,0,0))
for i in range(99):
    # 随机画点
    drow.point(tuple(sample(range(img_size[0]),2)), fill=(0,0,0))

# 文字
font = ImageFont.truetype("simsun.ttc", 24)     # 定义文字字体和大小
drow.text((6,6), img_text, font=font, fill="green")

# 扭曲图片和滤镜
params = [
    1 - float(randint(1,2)) / 100,
    0,
    0,
    0,
    1 - float(randint(1,10)) /100,
    float(randint(1,2)) / 500,
    0.001,
    float(randint(1,2)) / 500
]
img = img.transform(img_size, Image.PERSPECTIVE, params)
img = img.filter(ImageFilter.EDGE_ENHANCE_MORE)

# 展示图片
img.show()