一直都想好好的学习Python，但是一直都没有如愿。这两天要做个小程序，就想到使用Python来处理，结果这几天的进步比以往总和都要大。学习语言还是要从实践中来做了。一直想做个Python连接PostgreSQL数据库的Manager，做个开源的项目来增进对这两个产品的学习。把代码贴出来，使用Python连接PostgreSQL数据库的第二篇：

from mx.DateTime import *
import pg
import random

def insertdb(id, initNum):
  nrange = range(initNum - 15, initNum +20)
  marchbegin = Date(2005, 3, 1)
  marchend = Date(2005, 4, 1)
  i = 10
  insertstrlist = []
  while True:
    intever = marchbegin + RelativeDateTime(day=1,hour=0,minute=i,second=0)
    n = random.choice(nrange)
    sql = "INSERT INTO srdata (\"srid\", \"srdtime\", \"srdcount\", \"srdstat\") VALUES (''''" + str(id) + "'''', ''''" + str(intever) + "'''', ''''" + str(n) + "'''', ''''" + str(initNum) +"'''')"
    insertstrlist.append(sql)
    if marchend == intever :
      break
    i = i + 10
  return insertstrlist
 
region50list = {''''1'''':1120, ''''2'''':1222, ''''3'''': 1103, ''''4'''': 902}
region64list = {''''5'''':1000, ''''6'''':1200, ''''7'''': 973, ''''8'''': 823}
region73list = {''''9'''':1020, ''''10'''':1287, ''''11'''': 1122, ''''12'''': 1244}

db = pg.connect(dbname = ''''stat'''', host = ''''192.168.0.2'''', user = ''''bbs'''', passwd = ''''2037423'''')
for region in db.query("SELECT * FROM sregions").dictresult():
  if (region["srid"] < 5):
    num = region50list[str(region["srid"])]
    sql50 = insertdb(region["srid"], num)
    for i in sql50:
      db.query(i)
      print "Insert OK : " + i
   
  if (region["srid"] > 5 and region["srid"] < 9):
    num = region64list[str(region["srid"])]
    sql64 = insertdb(region["srid"], num)
    for i in sql64:
      db.query(i)
      print "Insert OK : " + i
   
  if (region["srid"] > 8 and region["srid"] < 13):
    num = region73list[str(region["srid"])]
    sql70 = insertdb(region["srid"], num)
    for i in sql70:
      db.query(i)
      print "Insert OK : " + i