这里采用PyCharm专业版可以直接创建Django项目，这里面自动部署了Django的基本环境。在创建项目时选择Django项目：
第一次建立Django项目时可能需要一段时间去等待下载相关的依赖环境。
我们可以在Terminal中输入
python -m django --version
来查看当前的Django版本，或者也可以在PyCharm的系统偏好设置中查看相关版本信息。
建立完成后自动生成了如下的一些文件。
不知道是环境问题还是什么问题，Django3.1.4的新建项目直接运行会报错
NameError: name 'os' is not defined
这里我们要修改
settings.py
文件，在文件中引入os库。
如果不知道如何引入的同学，这里贴了引入后
settings.py
文件的所有内容。
"""
Django settings for DjangoDemo2 project.
Generated by 'django-admin startproject' using Django 3.1.5.
For more information on this file, see
https://docs.djangoproject.com/en/3.1/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.1/ref/settings/
"""from pathlib import Path
import os
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent
# Quick-start development settings - unsuitable for production# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY ='*z4n3290$mge9mbn04a5+hbdk@@!2y_z$05b_@(^c=ss98+=%&'# SECURITY WARNING: don't run with debug turned on in production!
DEBUG =True
ALLOWED_HOSTS =[]# Application definition
INSTALLED_APPS =['django.contrib.admin','django.contrib.auth','django.contrib.contenttypes','django.contrib.sessions','django.contrib.messages','django.contrib.staticfiles',]
MIDDLEWARE =['django.middleware.security.SecurityMiddleware','django.contrib.sessions.middleware.SessionMiddleware','django.middleware.common.CommonMiddleware','django.middleware.csrf.CsrfViewMiddleware','django.contrib.auth.middleware.AuthenticationMiddleware','django.contrib.messages.middleware.MessageMiddleware','django.middleware.clickjacking.XFrameOptionsMiddleware',]
ROOT_URLCONF ='DjangoDemo2.urls'
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',],},},]
WSGI_APPLICATION ='DjangoDemo2.wsgi.application'# Database# https://docs.djangoproject.com/en/3.1/ref/settings/#databases
DATABASES ={'default':{'ENGINE':'django.db.backends.sqlite3','NAME': BASE_DIR /'db.sqlite3',}}# Password validation# https://docs.djangoproject.com/en/3.1/ref/settings/#auth-password-validators
AUTH_PASSWORD_VALIDATORS =[{'NAME':'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',},{'NAME':'django.contrib.auth.password_validation.MinimumLengthValidator',},{'NAME':'django.contrib.auth.password_validation.CommonPasswordValidator',},{'NAME':'django.contrib.auth.password_validation.NumericPasswordValidator',},]# Internationalization# https://docs.djangoproject.com/en/3.1/topics/i18n/
LANGUAGE_CODE ='en-us'
TIME_ZONE ='UTC'
USE_I18N =True
USE_L10N =True
USE_TZ =True# Static files (CSS, JavaScript, Images)# https://docs.djangoproject.com/en/3.1/howto/static-files/
STATIC_URL ='/static/'
