python3pillow生成验证码图片方法介绍

$ 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')