HttpResponse.delete_cookie('cookie名')

from django.urls import path
from login import views
urlpatterns = [
    path('', views.login),
    path('set_cookie/', views.set_cookie),
    path('get_cookie/', views.get_cookie),
    path('del_cookie/', views.del_cookie)
]

from django.shortcuts import render
from django.http import HttpRequest
from django.http import HttpResponse
from django.http import JsonResponse
from django.shortcuts import redirect
from django.urls import reverse
import json
# Create your views here.
def set_cookie(request):
    response = HttpResponse('set_cookie')
    # 在响应中设置Cookie为 username=zs
    response.set_cookie('username', value='zs')
    # 返回响应
    return response
def get_cookie(request):
    # 获取浏览器请求时携带的cookie
    cookies = request.COOKIES
    print('cookies: ', cookies)
    print('cookies_type: ', type(cookies))
    # 获取cookie中的用户名
    # 由于cookies是字典类型，所以可以使用字典方式获取cookie中某一个值
    username = cookies['username']
    print('username: ', username)
    # 将cookie以JSON字符串的形式返回给浏览器
    return JsonResponse(cookies)
def del_cookie(request):
    response = HttpResponse('del_cookie')
    # 由于不为第一次请求，cookie存在，返回响应时，会将发送过来的cookie返回
    # 删除响应对象中的cookie
    response.delete_cookie('username')
    # 返回响应
    return response

HttpResponse.set_cookie(key, value, max_age=0)

request.session['键']=值

from django.urls import path
from login import views
urlpatterns = [
    path('', views.login),
    path('set_cookie/', views.set_cookie),
    path('get_cookie/', views.get_cookie),
    path('del_cookie/', views.del_cookie),
    path('set_session/', views.set_session)
]

from django.shortcuts import render
from django.http import HttpRequest
from django.http import HttpResponse
from django.http import JsonResponse
from django.shortcuts import redirect
from django.urls import reverse
import json
# Create your views here.
def set_session(request):
    # 1. 获取浏览器传递的Cookie
    # 第一次请求没有cookie
    cookies = request.COOKIES
    print(cookies)
    # 2. 用户名和密码进行验证
    # 假设认为用户名和密码正确
    username = 'zszszs'
    # 3. 设置session信息
    # request.session可以理解为字典
    # 服务器会自动在响应头中设置一个session id
    request.session['username'] = username
    # 4. 返回响应
    return HttpResponse('set_session')

request.session.get('键',默认值)

from django.urls import path
from login import views
urlpatterns = [
    path('', views.login),
    path('set_cookie/', views.set_cookie),
    path('get_cookie/', views.get_cookie),
    path('del_cookie/', views.del_cookie),
    path('set_session/', views.set_session),
    path('get_session/', views.get_session)
]

def get_session(request):
    # 1. 请求会通过cookie将session id发送给服务器
    cookies = request.COOKIES
    print(cookies)
    # 2. 获取session id，进行验证
    # 浏览器发送过来的请求cookie会携带session id
    # cookie中的session id没问题可以直接获取session中的信息
    # 验证成功获取session信息
    # request.session相当于字典
    username = request.session.get('username')
    print(username)
    # 3. 返回响应
    return HttpResponse('get_session')

request.session.clear()

request.session.flush()

del request.session['键']

request.session.set_expiry(value)