这篇对应的是习题16,读写文件
# -*- coding: utf-8 -*-
#对文件更多操作复制A文件的内容到B文件
#from sys import argv
from os.path import exists
prompt = "> "
from_file = raw_input("please input the filename where you want to copy...
分类:
编程语言 时间:
2014-05-05 12:54:02
阅读次数:
402
INVITE Via: Max-Forwards: To:
From: Call-ID: CSeq: Contact: Content-Type:
Content-Length:
分类:
其他好文 时间:
2014-05-04 12:34:06
阅读次数:
292
这是一篇分享技巧的文章:myeclipse恢复误删文件和代码
[ 恢复误删文件 ]
今天在写代码的时候,不小心把一个包给删除了,然后这个包下所有的文件都没了,相信很多人都有类似的经历,
幸好myeclipse给我们提供了一个很好用的功能:
选中项目 -> Restore from Local History.. -> 界面如下图
勾选要恢复的文件,点击Restore就可以了,就算...
分类:
系统相关 时间:
2014-05-04 00:25:53
阅读次数:
515
If you have installed YouTrack from EXE
Distribution, then the best way to change the database location is by specifying
it via JVM property.Stop curr...
分类:
数据库 时间:
2014-05-03 23:30:08
阅读次数:
505
题目:
Given a string S and a string T, count the number of distinct subsequences of T in S.
A subsequence of a string is a new string which is formed from the original string by deleting some (c...
分类:
其他好文 时间:
2014-05-03 21:48:19
阅读次数:
252
A Star not a Tree?
Time Limit: 1000MS
Memory Limit: 65536K
Total Submissions: 3272
Accepted: 1664
Description
Luke wants to upgrade his home computer network from 10mbs...
分类:
其他好文 时间:
2014-05-03 21:31:49
阅读次数:
417
1、能用DISTINCT的就不用GROUP BY
SELECT OrderID FROM Details WHERE UnitPrice > 10 GROUP BY OrderID
可改为: SELECT DISTINCT OrderID FROM Details WHERE UnitPrice > 10
2.能用UNION ALL就不要用UNION
UNION A...
分类:
数据库 时间:
2014-05-03 21:31:24
阅读次数:
342
AcknowledgmentsNotationsContentsIntroduction
3D from imagesOverview
Projective geometry
Projective geometry
The projective planeProjective 3-spaceTransformationsConics and quadrics
The st...
分类:
其他好文 时间:
2014-05-03 15:45:32
阅读次数:
584
BeautifulSoup 善于网页数据分析
请参考: http://www.crummy.com/software/BeautifulSoup
例如: 抓取CSDN首页极客头条内容 soup.py
import urllib2, re
from BeautifulSoup import BeautifulSoup
page = urllib2.urlopen("http://gee...
分类:
编程语言 时间:
2014-05-03 15:31:42
阅读次数:
401
#include
#include
#include
#include
#include
using namespace std;
#define N 20020
struct node{
int from, to, dou, nex;
}edge[N];
int head[N], edgenum;
void add(int u, int v,int dou){
node E={u,v,dou...
分类:
其他好文 时间:
2014-05-03 15:25:32
阅读次数:
340