随机生成中文验证码的python代码

需要准备字体文件，或者通过fontPath参数指定。

默认是我用的字体wqy.ttc.

代码如下:

# -- coding: utf-8 --

import Image,ImageDraw,ImageFont

import random

import math, string

class RandomChar():

  “””用于随机生成汉字”””

  @staticmethod

  def Unicode():

    val = random.randint(0x4E00, 0x9FBF)

    return unichr(val)

  @staticmethod

  def GB2312():

    head = random.randint(0xB0, 0xCF)

    body = random.randint(0xA, 0xF)

    tail = random.randint(0, 0xF)

    val = ( head << 8 ) | (body << 4) | tail

    str = “%x” % val

    return str.decode(‘hex’).decode(‘gb2312’)

class ImageChar():

  def init(self, fontColor = (0, 0, 0),

                     size = (100, 40),

                     fontPath = ‘wqy.ttc’,

                     bgColor = (255, 255, 255),

                     fontSize = 20):

    self.size = size

    self.fontPath = fontPath

    self.bgColor = bgColor

    self.fontSize = fontSize

    self.fontColor = fontColor

    self.font = ImageFont.truetype(self.fontPath, self.fontSize)

    self.image = Image.new(‘RGB’, size, bgColor)

  def rotate(self):

    self.image.rotate(random.randint(0, 30), expand=0)

  def drawText(self, pos, txt, fill):

    draw = ImageDraw.Draw(self.image)

    draw.text(pos, txt, font=self.font, fill=fill)

    del draw

  def randRGB(self):

    return (random.randint(0, 255),

           random.randint(0, 255),

           random.randint(0, 255))

  def randPoint(self):

    (width, height) = self.size

    return (random.randint(0, width), random.randint(0, height))

  def randLine(self, num):

    draw = ImageDraw.Draw(self.image)

    for i in range(0, num):

      draw.line([self.randPoint(), self.randPoint()], self.randRGB())

    del draw

  def randChinese(self, num):

    gap = 5

    start = 0

    for i in range(0, num):

      char = RandomChar().GB2312()

      x = start + self.fontSize  i + random.randint(0, gap) + gap  i

      self.drawText((x, random.randint(-5, 5)), RandomChar().GB2312(), self.randRGB())

      self.rotate()

    self.randLine(18)

  def save(self, path):

    self.image.save(path)

调用方法：

ic = ImageChar(fontColor=(100,211, 90),

   fontPath=’/usr/share/fonts/truetype/wqy/wqy-zenhei.ttc’)

ic.randChinese(4)

ic.save(“1.jpeg”)

效果图：



注意需要保证：

fontPath所指定的中文字体文件是存在的