1、所需資源：pycharm，python3.6，module：pymysql

2、pycharm配置mysql：

新新增一個mysql資料庫

ip:192.168.112.54    埠：3306    賬號：root   密碼：123456

接下來，建立資料庫表資訊：（程式碼改編，來自網路）

/*1、建立表*/

DROP TABLE IF EXISTS mysql.Student;
create table Student
(
  Sno   varchar(20),
  Sname varchar
 
(50),
  primary key (Sno)
)
  ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

DROP TABLE IF EXISTS mysql.Course;
create table Course
(
  Cno   varchar(20),
  Cname varchar(50),
  Tno   varchar(20),
  primary key (Cno)
)
  ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

DROP TABLE IF EXISTS mysql.SC;
create table SC
(
  Sno   
 
varchar(20),
  Cno   varchar(20),
  score int,
  primary key (Sno, Cno)
)
  ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

DROP TABLE IF EXISTS mysql.Teacher;
create table Teacher
(
  Tno   varchar(20),
  Tname varchar(50),
  primary key (Tno)
)
  ENGINE = InnoDB
  DEFAULT CHARSET = utf8;
/*2、插入表資料*/
INSERT INTO
 
 `Student` (Sno, Sname) VALUES ('001', '陳一');
INSERT INTO `Student` (Sno, Sname) VALUES ('002', '郭二');
INSERT INTO `Student` (Sno, Sname) VALUES ('003', '張三');
INSERT INTO `Student` (Sno, Sname) VALUES ('004', '李四');
INSERT INTO `Student` (Sno, Sname) VALUES ('005', '王五');

INSERT INTO `Teacher` (Tno, Tname) VALUES ('001', '張老師');
INSERT INTO `Teacher` (Tno, Tname) VALUES ('002', '王老師');
INSERT INTO `Teacher` (Tno, Tname) VALUES ('003', '錢老師');
INSERT INTO `Teacher` (Tno, Tname) VALUES ('004', '劉老師');
INSERT INTO `Teacher` (Tno, Tname) VALUES ('005', '胡老師');

INSERT INTO `Course` (Cno, Cname, Tno) VALUES ('001', '語文', '001');
INSERT INTO `Course` (Cno, Cname, Tno) VALUES ('002', '數學', '002');
INSERT INTO `Course` (Cno, Cname, Tno) VALUES ('003', '英語', '003');
INSERT INTO `Course` (Cno, Cname, Tno) VALUES ('004', '物理', '004');
INSERT INTO `Course` (Cno, Cname, Tno) VALUES ('005', '政治', '005');


INSERT INTO `SC` (Sno, Cno, score) VALUES ('001', '001', 50);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('001', '002', 60);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('001', '003', 70);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('001', '004', 80);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('001', '005', 90);

INSERT INTO `SC` (Sno, Cno, score) VALUES ('002', '001', 90);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('002', '002', 80);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('002', '003', 70);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('002', '004', 60);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('002', '005', 50);

INSERT INTO `SC` (Sno, Cno, score) VALUES ('003', '001', 81);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('003', '002', 82);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('003', '003', 83);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('003', '004', 84);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('003', '005', 85);

INSERT INTO `SC` (Sno, Cno, score) VALUES ('004', '001', 71);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('004', '002', 72);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('004', '003', 73);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('004', '004', 74);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('004', '005', 75);

INSERT INTO `SC` (Sno, Cno, score) VALUES ('005', '001', 75);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('005', '002', 74);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('005', '003', 73);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('005', '004', 72);
INSERT INTO `SC` (Sno, Cno, score) VALUES ('005', '005', 71);

/*執行sql檔案出錯，解決辦法：使用Notepad++開啟檔案，選擇 格式->無BOM的UTF8格式編碼*/

/*2、單表查詢_表資料*/
select * from Teacher;
select * from Student;
select * from Course;
select * from SC;
/*3、多表查詢_表資料*/
select
  s.Sname as "學生",
  t.Tname  as "教師",
  c.Cname as "課程",
  sc.score as "分數"
from Student s, SC sc, Course c, Teacher t
where sc.Cno = c.Cno
      and sc.Sno = s.Sno
      and c.Tno = t.Tno
order by s.Sname,
  t.Tname,
  c.Cname,
  sc.score;

輸出查詢結果【部分截圖】，能夠正常顯示，說明環境配置正常

緊接著：python程式碼去模擬手工操作資料庫

# coding:utf-8
import pymysql
'''
新新增一個mysql資料庫
ip:192.168.112.54    埠：3306    賬號：root   密碼：123456
'''
# 連線mysq資料庫
connection = pymysql.connect(host='192.168.112.54',
                             port=3306,
                             user='root',
                             password='123456',
                             db='mysql',
                             charset='utf8',
                             cursorclass=pymysql.cursors.DictCursor)
# 例項化——建立資料庫遊標
cursor = connection.cursor()
# 使用execute方法執行SQL語句
id = '001'
i = cursor.execute("select * from Student s where s.Sno = %s" % id)
print("記錄數：%d;" % i, "型別：", type(i))

# 使用 fetchone() 方法獲取一條資料
data = cursor.fetchone()
print("data:", data, "type:", type(data))
# fetchone()返回字典型別，通過字典訪問值
print("Student Number : %s " % data["Sno"])
# 使用 fetchall() 方法獲取多條資料
j = cursor.execute("select * from Teacher ")
print("記錄數：%d;" % j, "型別：", type(j))
datas = cursor.fetchall()
# 迴圈遍歷查詢字典值
for k in datas:
    print(k["Tname"])
print("datas:", datas, "type:", type(datas))
# fetchall()返回list型別，通過list訪問值
print(datas[0]["Tname"])
# 關閉資料庫連線
cursor.close()
connection.close()

輸出查詢結果【部分截圖】

資料庫修改等基本操作，請查閱mysql相關知識

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