3.2 在Django创建一个字符串

#urls.py
from django.conf.urls import url
from django.contrib import admin
from django.shortcuts import HttpResponse,render
def index(request):
    return HttpResponse("index")

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^index/', index),#第二个index为函数，第一个index为网页显示路径默认127.0.0.1:8000/index/

]

3.3在Django创建一页面

from django.conf.urls import url
from django.contrib import admin
from django.shortcuts import HttpResponse,render
def index(request):
    return render(request,'index.html')#html文件都放在templates

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^index/', index),

]

pycharm已经给设置好了路径
settings.py 
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))#当前项目根目录

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates')]
        ,
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },