python操作数据库

#coding:utf-8
import psycopg2
conn=psycopg2.connect(host='127.0.0.1',port=5432,user='postgres',password='1',database='postgis')
print "opened db successfully"
cursor=conn.cursor()
cursor.execute("select name,type,state from wy")
rows=cursor.fetchall()
for row in rows:
   print "name:",row[0]
   print "type:",row[1]
   print "state:",row[2]
   print "*****"
print "Records select successfully";
conn.close()

#coding:utf-8
import psycopg2
conn=psycopg2.connect(host='127.0.0.1',port=5432,user='postgres',password='1‘’,database='postgis')
print "opened db successfully"
cursor=conn.cursor()
cursor.execute("insert into wy(mid,name,psw,type,state,creat_time) \
values('7762cc64-5de1-11e6-ba75-000c2923b59f','admin2','1','测试组','1',CURRENT_TIMESTAMP)")
conn.commit()
print "Records created successfully";
conn.close()

#coding:utf-8
import psycopg2
conn=psycopg2.connect(host='127.0.0.1',port=5432,user='postgres',password='1',database='postgis')
print "opened db successfully"
cursor=conn.cursor()
cursor.execute("update wy set type='UI组' where name='admin2'")
conn.commit()
print "Total number of rows updated:",cursor.rowcount
cursor.execute("select name,type,state from wy")
rows=cursor.fetchall()
for row in rows:
print "name:",row[0]
print "type:",row[1]
print "state:",row[2]
print "*******"
print "done";
conn.close()

#coding:utf-8
import psycopg2
conn=psycopg2.connect(host='127。0.0.1',port=5432,user='postgres',password='1',database='postgis')
print "opened db successfully"
cursor=conn.cursor()
cursor.execute("delete from wy where name='admin2'")
conn.commit()
print "Total number of rows updated:",cursor.rowcount
cursor.execute("select name,type,state from wy")
rows=cursor.fetchall()
for row in rows:
   print "name:",row[0]
   print "type:",row[1]
   print "state:",row[2]
   print "*******"
print "done";
conn.close()