Python -- 数据库连接

1.连接MySQL(x64系统装不上x32版本)

MySQL现在都不支持Python3

 import MySQLdb
 con = MySQLdb.connect(host='127.0.0.1', user='root', passwd='python', db='python')
 cur = con.cursor()
 cur.execute('DELETE FROM PEOPLE WHERE AGE = 20')
 con.commit()
 cur.execute('SELECT * FROM PEOPLE')
 r = cur.fetchall()
 print(r)
 cur.close()
 con.close()

2.连接SQLite

SQLite单文件，不需要密码，命令行下直接sqlite.exe xxx.xx即可创建或打开数据库

 import sqlite3
 con = sqlite3.connect('python.db')
 cur = con.cursor()
 # cur.execute("CREATE TABLE PEOPLE(NAME VARCHAR(30), AGE INT, SEX CHAR(1))")
 # cur.execute("INSERT INTO PEOPLE VALUES('Jee', 30, 'M')")
 # con.commit()
 cur.execute('SELECT * FROM people')
 s = cur.fetchall()
 print(s)
 cur.close()
 con.close()

如果程序当前目录下没有python.db数据库文件的话,connect语句会直接创建