# -*- coding: utf-8 -*-import randomdef generate_verification_code(len=6): ''' 隨機生成6位的驗證碼 ''' # 注意： 這里我們生成的是0-9A-Za-z的列表，當然你也可以指定這個list，這里很靈活 # 比如： code_list = ['P','y','t','h','o','n','T','a','b'] # PythonTab的字母 code_list = []  for i in range(10): # 0-9數字  code_list.append(str(i)) for i in range(65, 91): # 對應從“A”到“Z”的ASCII碼  code_list.append(chr(i)) for i in range(97, 123): #對應從“a”到“z”的ASCII碼  code_list.append(chr(i)) myslice = random.sample(code_list, len) # 從list中隨機獲取6個元素，作為一個片斷返回 verification_code = ''.join(myslice) # list to string return verification_code

# -*- coding: utf-8 -*-import randomdef generate_verification_code_v2(): ''' 隨機生成6位的驗證碼 ''' code_list = [] for i in range(2):  random_num = random.randint(0, 9) # 隨機生成0-9的數字  # 利用random.randint()函數生成一個隨機整數a，使得65<=a<=90  # 對應從“A”到“Z”的ASCII碼  a = random.randint(65, 90)  b = random.randint(97, 122)  random_uppercase_letter = chr(a)  random_lowercase_letter = chr(b)  code_list.append(str(random_num))  code_list.append(random_uppercase_letter)  code_list.append(random_lowercase_letter) verification_code = ''.join(code_list) return verification_code

# -*- coding: utf-8 -*- import Image,ImageDraw,ImageFont import random import math, string class RandomChar():  """用于隨機生成漢字"""  @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)