Python复习

1.python的斐波那契数:

def fab(max):
    n,a,b=0,0,1
    while n<max:
        print b
        a,b=b,a+b
        n=n+1

fab(4)

2.python求偶数(奇数可以推出，注意缩进)

def test(n):
    var=0
    L=[]
    for var in range(n):
        if (var%2==0):
                print var
test(7)

3.python对数据库的操作(注意要导入，库MySQLdb)下载地址http://sourceforge.net/projects/mysql-python/

#coding=utf-8
import MySQLdb

conn= MySQLdb.connect(
        host='127.0.0.1',
        port = 3306,
        user='root',
        passwd='miao',
        db ='testweb',
        )
cur = conn.cursor()

#创建数据表
#cur.execute("create table student(id int ,name varchar(20),class varchar(30),age varchar(10))")

#插入一条数据
cur.execute("insert into student values('2','Tom','3 year 2 class','9')")


#修改查询条件的数据
#cur.execute("update student set class='3 year 1 class' where name = 'Tom'")

#删除查询条件的数据
#cur.execute("delete from student where age='9'")

cur.close()
conn.commit()
conn.close()