用python 找到不存在的数字

先用bash脚本排序，然后用python脚本找出丢失的数字。当然，也可以完全在python脚本中完成。

# !/usr/bin/python
# filename:findlost.py
# author:zhouhh
# http://blog.csdn.net/ablo_zhou
# email:[email protected]
# date:2008.3.31
# Findoutwhatnumberislostfromafile

import os

infilename = raw_input( " infilename[rawpack]: " );
outfilename = raw_input( " outfilename[outfile]: " );

if infilename == "" :
infilename = " rawpack " ;

if outfilename == "" :
outfilename = " outfile " ;

cmd = ( " sort.sh " ,infilename,outfilename)
os.system( ' ' .join(cmd))

f = open(outfilename);

i = 0
pkid = 0
count = 0
while True:
line = f.readline()
if len(line) == 0:
f.close()
break

pkid = int(line)
if pkid > i:
print " lostpackage " ,i
i += 1
count += 1
i += 1
print " ================================= "
print " totalpackagenumis " ,pkid, " ,lostpackagecount: " ,count

执行结果：

$ ./ findlost . py
infilename[rawpack]:
outfilename[outfile]:
./ sort . sh , rawpack , outfile
lostpackage 1707
lostpackage 2126
lostpackage 2139
lostpackage 2278
lostpackage 2280
lostpackage 2475
lostpackage 2763
lostpackage 3014
lostpackage 3072
lostpackage 3165
lostpackage 3271
=================================
totalpackagenumis 3778 , lostpackagecount: 11