python后台管理系统验证码

基于Python的后台管理系统可以使用不同的方法来生成和验证验证码。以下是两种常见的方法：

1. 使用Django框架生成和验证验证码[^1]：

# 生成验证码
from django.contrib.auth.decorators import login_required
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from django.utils.six import BytesIO
from captcha.image import ImageCaptcha

@csrf_exempt
@login_required
def generate_captcha(request):
    image = ImageCaptcha()
    code = image.generate(request.session.get('captcha'))
    request.session['captcha'] = code
    data = BytesIO()
    image.write(code, data)
    return HttpResponse(data.getvalue(), content_type='image/png')

# 验证验证码
from django.contrib.auth.decorators import login_required
from django.http import JsonResponse

@login_required
def verify_captcha(request):
    user_input = request.GET.get('captcha', '')
    captcha = request.session.get('captcha', '')
    if user_input.lower() == captcha.lower():
        return JsonResponse({'valid': True})
    else:
        return JsonResponse({'valid': False})

2. 使用Flask框架生成和验证验证码[^2]：

from flask import Flask, session, request, make_response
from captcha.image import ImageCaptcha

app = Flask(__name__)
app.secret_key = 'your_secret_key'

@app.route('/captcha', methods=['GET'])
def generate_captcha():
    image = ImageCaptcha()
    code = image.generate(session.get('captcha'))
    session['captcha'] = code
    response = make_response(code)
    response.headers['Content-Type'] = 'image/png'
    return response

@app.route('/verify', methods=['GET'])
def verify_captcha():
    user_input = request.args.get('captcha', '')
    captcha = session.get('captcha', '')
    if user_input.lower() == captcha.lower():
        return 'Valid captcha'
    else:
        return 'Invalid captcha'

请注意，以上代码仅为示例，实际使用时需要根据具体需求进行适当修改。