python3 pillow生成简单验

$ pip3 install pillow

\vericode.py

from PIL import Image,ImageDraw,ImageFont,ImageFilter
import random

 #随机码 默认长度=1
def 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.py

from . import vericode.py
from io import BytesIO
from django.http import HttpResponse

def 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')