python3 pillow生成简单验证码图片的示例

$ pip3 install pillow

/vericode.pyfrom PIL import Image,ImageDraw,ImageFont,ImageFilterimport random #随机码 默认长度=1def random_code(lenght=1):    code = ''  for char in range(lenght):    code += chr(random.randint(65,90))  return code #随机颜色 默认颜色范围【1，255】def random_color(s=1,e=255):  return (random.randint(s,e),random.randint(s,e),random.randint(s,e)) #生成验证码图片 #length 验证码长度 #width 图片宽度 #height 图片高度 #返回验证码和图片def veri_code(lenght=4,width=160,height=40):  #创建Image对象  image = Image.new('RGB',(width,height),(255,255,255))  #创建Font对象  font = ImageFont.truetype('Arial.ttf',32)  #创建Draw对象  draw = ImageDraw.Draw(image)  #随机颜色填充每个像素  for x in range(width):    for y in range(height):      draw.point((x,y),fill=random_color(64,255))  #验证码  code = random_code(lenght)  #随机颜色验证码写到图片上  for t in range(lenght):    draw.text((40*t+5,5),code[t],font=font,fill=random_color(32,127))  #模糊滤镜  image = image.filter(ImageFilter.BLUR)  return code,image

/views.pyfrom . import vericode.pyfrom io import BytesIOfrom django.http import HttpResponsedef verify_code(request):  f = BytesIO()  code,image = vericode.veri_code()  image.save(f,'jpeg')  request.session['vericode'] = code  return HttpResponse(f.getvalue())def submit_xxx(request):  if request.method == "POST":    vericode = request.session.get("vericode").upper()    submitcode = request.POST.get("vericode").upper()    if submitcode == vericode:      return HttpResponse('ok')  return HttpResponse('error')