Python產生驗證碼執行個體_python

本文執行個體展示了Python產生驗證碼的方法，具有很好的實用價值。分享給大家供大家參考。具體實現方法如下：

前台頁面代碼如下：

<div> <img id="authcode_img" alt="驗證碼" src="/registration/makeimage/{{time}}"/>   <!-- time 任意隨機數（時間戳記），防止頁面緩衝 導致驗證碼不能更新--> <a href="javascript:refreshCode();" rel="external nofollow" style="color:blue;">看不清換一張</a></div><script> function refreshCode() {   $('authcode_img').src = "/registration/makeimage/" + Math.random(); }</script>

背景程式如下：

import StringIOimport Image, ImageDraw, ImageFont, random  #相應的模組需要安裝from xxx.settings import authcode_font #請確保改字型存在def make_image(request):  mp = hashlib.md5()  mp.update(str(datetime.datetime.now())+str(random.random()))    mp_src = mp.hexdigest()  rand_str = mp_src[0:6]  font = ImageFont.truetype(authcode_font, 25)  width = 75  height = 30  im = Image.new('RGB',(width,height),'#%s'%mp_src[-7:-1])  draw = ImageDraw.Draw(im)  draw.line((random.randint(0,width),random.randint(0,height),random.randint(0,width),random.randint(0,height)))  draw.line((random.randint(0,width),random.randint(0,height),random.randint(0,width),random.randint(0,height)))  draw.line((random.randint(0,width),random.randint(0,height),random.randint(0,width),random.randint(0,height)))  draw.line((random.randint(0,width),random.randint(0,height),random.randint(0,width),random.randint(0,height)))  draw.line((random.randint(0,width),random.randint(0,height),random.randint(0,width),random.randint(0,height)))  draw.text((5,2), rand_str, font=font)    del draw    buffer = StringIO.StringIO()  im.save(buffer,'jpeg')  httpResponse = HttpResponse(content=buffer.getvalue(),mimetype="image/jpeg")  request.session['auth_code'] = rand_str  return httpResponse

程式效果如下：