python連接數據庫之（連接MySQL）

python連接mysql數據庫

1. 先下載pymysqll模塊，進入命令提示符界面運行以下命令

 

 在python中執行以下命令可查詢數據庫

# import pymysql#調用模塊
# db = pymysql.connect(user = 'root',password='wbf980728',database='wang',charset='utf8')#打開數據庫連接
# cursor = db.cursor()#獲取操作游標
# demo = cursor.execute('select * from students')#運行SOL語句
# lists = cursor.fetchall()#接收返回的結果
# # print(lists)
# for i in lists:
#     print(i)

 

在python中操作mysql數據庫增刪改數據

# import pymysql#調用模塊
# db = pymysql.connect(user = 'root',password='wbf980728',database='wang',charset='utf8')#打開數據庫連接
# cursor = db.cursor()#獲取操作游標
# demo = cursor.execute('INSERT INTO students (s_id,c_id,s_name,s_gender,s_score) VALUES (9,4, "零零", "女", 77)')
# demo = cursor.execute('DELETE  FROM students WHERE s_id=8')
# demo = cursor.execute('UPDATE students SET s_name="kk", s_score=66 WHERE s_id=1;')
# lists = cursor.fetchall()#接收返回的值
# db.commit()#提交mysql語句
# print(demo)

 

關閉數據庫

#import pymysql#調用模塊
#db = pymysql.connect(user = 'root',password='wbf980728',database='wang',charset='utf8')#打開數據庫連接
#cursor = db.cursor()#獲取操作游標
#data=db.close() #關閉數據庫
#print(data)