修改settings.py文件

"""Django settings for db_operation_demo project.Generated by 'django-admin startproject' using Django 2.1.5.For more information on this file, seehttps://docs.djangoproject.com/en/2.1/topics/settings/For the full list of settings and their values, seehttps://docs.djangoproject.com/en/2.1/ref/settings/"""import os# Build paths inside the project like this: os.path.join(BASE_DIR, ...)BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))# Quick-start development settings - unsuitable for production# See https://docs.djangoproject.com/en/2.1/howto/deployment/checklist/# SECURITY WARNING: keep the secret key used in production secret!SECRET_KEY = 'j@^55ibyauzd2c_*^09zp@+44pj5g8u4hq)lufepw1@$3u4z%)'# SECURITY WARNING: don't run with debug turned on in production!DEBUG = TrueALLOWED_HOSTS = []# Application definitionINSTALLED_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 = 'db_operation_demo.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 = 'db_operation_demo.wsgi.application'# Database# https://docs.djangoproject.com/en/2.1/ref/settings/#databasesDATABASES = {    'default': {        'ENGINE': 'django.db.backends.mysql',        'NAME': 'django_db1',        'USER': 'root',        'PASSWORD': 'passwd',        'HOST': 'localhost',        'PORT': '3306'    }}# Password validation# https://docs.djangoproject.com/en/2.1/ref/settings/#auth-password-validatorsAUTH_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/2.1/topics/i18n/LANGUAGE_CODE = 'en-us'TIME_ZONE = 'Asia/Shanghai'USE_I18N = TrueUSE_L10N = TrueUSE_TZ = False# Static files (CSS, JavaScript, Images)# https://docs.djangoproject.com/en/2.1/howto/static-files/STATIC_URL = '/static/'

# pip3 install pymysql

修改__init__.py 文件

import pymysqlpymysql.install_as_MySQLdb()

 views.py

from django.shortcuts import renderfrom django.db import connectiondef index(request):    cursor = connection.cursor()    # cursor.execute("insert into book(id,name,author) values(null,'三国演义','罗贯中')")    # cursor.executemany("insert into book(id,name,author) values(null,'三国演义','罗贯中')")    '''执行多条sql语句'''    cursor.execute("select * from book")    # rows = cursor.fetchone()    # rows = cursor.fetchmany(2)    rows = cursor.fetchall()    for i in rows:        print(i)    return render(request,'index.html')