python实现ip查询示例

以下代码实现了ip查询功能处理程序

import os,time

def getip(filepath):
 ip2city={}
 file=open(filepath,'r')
 lines=file.readlines()
 file.close()
 for line in lines:
 ip=line.split(' ')[0]
 city=line.split(' ')[1]
 haship=hashm(ip)
 if haship in ip2city:
 pass
 else:
 ip2city[haship]=city
 print('Hash done!')
 return ip2city
def hashm(ip):
 iplist=ip.split('.')
 ip=int(iplist[0])*4+int(iplist[1])*2+int(iplist[2])
 return ip
def getcityfromip(filepath,ipandcity):
 outputstr=[]
 for file in os.listdir(filepath):
 file_handler=open(filepath+'\\'+file,'r')
 line=file_handler.readline()
 while line:
 ip=hashm(line.rstrip())
 if ip in ipandcity:
 outputstr.append(line.rstrip()+' '+ipandcity[ip])
 line=file_handler.readline()
 file_handler.close()
 outfile_handler=open(filepath+'\\'+file.split('.')[0]+'_out.txt','a+')
 outfile_handler.writelines(outputstr)
 outfile_handler.close()
 print(file.split('.')[0]+'_out.txt'+'done!')
 
def splitfile(filepath):
 file=open(filepath,'r')
 block_size=8000000
 filecount=1
 temp=[]
 count=0
 line=file.readline()
 while line or temp:
 if count==block_size:
 wfile=open('D:\\ipfile\\file_'+str(filecount)+'.txt','a+')
 wfile.writelines(temp)
 temp=[]
 count=0
 wfile.close()
 filecount+=1
 print('Split'+str(filecount)+' done!')
 else:
 count+=1
 temp.append(line)
 line=file.readline()
 file.close()
 return os.path.join('D:\\'+'ipfile')
if __name__ == '__main__':
 start=time.clock()
 filepath='D:\\ip.txt'
 ippath='D:\\citys.txt'
 ip2city=getip(ippath)
 splitfilepath=splitfile(filepath)
 getcityfromip('D:\\'+'ipfile',ip2city)
 end=time.clock()
 print(end-start)

生成IP

#Generate 100 millon ip
import random
import time

def generateIpAdd(file,num):
 ip=[]
 file=open(file,'a+')
 for i in range(num):
 ipAdd='192.168.'+str(random.randint(0,255))+'.'+str(random.randint(0,255))
 ip.append(ipAdd+'\n')
 file.writelines(ip)
 file.close()
if __name__=='__main__':
 start=time.clock()
 for i in range(10000):
 generateIpAdd('D:\ip.txt',10000)
 end=time.clock()
 print(end-start)

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