Python 模拟生成动态产生验证码图片的方法

$ pip install pillow

from PIL import Image

# 打开图片,注意路径
img = Image.open('pitbull.jpeg')
# 获得图片尺寸
weight, height = img.size
print('原图片尺寸：{}x{}'.format(weight, height))

# 进行缩放，缩放 50%
img.thumbnail((weight//2, height//2))
print('调整后的图片尺寸：{}x{}'.format(weight//2, height//2))

# 将缩放后的图片保存
img.save('thumbnail.jpg', 'jpeg')

from PIL import Image,ImageFilter

# 打开图片文件，注意路径

img = Image.open('pitbull.jpeg')

# 应用模糊滤镜
img2 = img.filter(ImageFilter.BLUR)

img2.save('blur.jpg', 'jpeg')

# -*- coding: utf-8 -*-
'''
@File: generate_random_code.py
@Time: 2020/01/31 20:32:10
@Author: 大梦三千秋
@Contact: yiluolion@126.com
'''

# Put the import lib here
from random import randint, choice
from PIL import Image, ImageDraw, ImageFont, ImageFilter


def rnd_chr(chr_set):
  '''获取随机字符

  Args:
    chr_set: 拟定生成的字符集

  Returns:
    返回随机字符
  '''
  return choice(chr_set)


def rnd_bg_color():
  '''获取随机像素值，填充背景

  Returns:
    返回随机像素值，返回元组类型
  '''
  return (randint(97, 255), randint(97, 255), randint(97, 255))


def rnd_chr_color():
  '''获取随机像素，填充输出字符

  Returns:
    返回随机像素值，返回元组类型
  '''
  # 与画板填充色进行一定的错开，防止完全覆盖
  return (randint(32, 96), randint(32, 96), randint(32, 96))


def main():
  # 生成字符集
  chr_set = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
  for i in range(65, 91):
    chr_set.append(chr(i))
  for j in range(97, 123):
    chr_set.append(chr(j))
  # print(chr_set)

  # 定义画板规格 250 x 50
  width = 60 * 5
  height = 60

  # 创建 Image 对象，白底画板
  image = Image.new('RGB', (width, height), (255, 255, 255))
  # 创建 Draw 对象
  draw = ImageDraw.Draw(image)
  # 创建 Font 对象
  font = ImageFont.truetype('./consola.ttf', 36)

  # 填充画板
  for x in range(width):
    for y in range(height):
      draw.point((x, y), fill=rnd_bg_color())

  # 填充文字
  for n in range(5):
    draw.text((60 * n + 25, 12), rnd_chr(chr_set), fill=rnd_chr_color(), font=font)
  
  # 对图像内容进行模糊后存储
  image = image.filter(ImageFilter.BLUR)
  image.save('./random_code.jpg', 'jpeg')

if __name__ == "__main__":
  main()

font = ImageFont.truetype('/absolute/path/font.ttf', 36)