python资料模块三

## 数据库表结构参考 ```sql drop database blog; drop database IF EXISTS blog; create database blog default charset utf8 collate utf8_general_ci; use blog; create table user( id int not null auto_increment primary key, username varchar(16) not null, nickname varchar(16) not null, mobile char(11) not null, password varchar(64) not null, email varchar(64) not null, ctime datetime not null, index ix_username_password (username,password), unique ix_mobile (mobile), unique ix_email (email) )default charset=utf8; create table article( id int not null auto_increment primary key, title varchar(255) not null, text text not null, read_count int default 0, comment_count int default 0, up_count int default 0, down_count int default 0, user_id int not null, ctime datetime not null, constraint fk_article_user foreign key (user_id) references user(id) )default charset=utf8; create table comment( id int not null auto_increment primary key, content varchar(255) not null, user_id int not null, article_id int not null, ctime datetime not null, constraint fk_comment_user foreign key (user_id) references user(id), constraint fk_comment_article foreign key (article_id) references article(id) )default charset=utf8; create table up_down( id int not null auto_increment primary key, choice tinyint not null, user_id int not null, article_id int not null, ctime datetime not null, constraint fk_up_down_user foreign key (user_id) references user(id), constraint fk_up_down_article foreign key (article_id) references article(id), unique ix_user_article (user_id,article_id) )default charset=utf8; ``` ## 项目中涉及第三方模块 - pymysql - dbutils