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用程序控制键盘显示灯的闪烁，由此得出人的肉眼只能识别0.02秒以上的闪烁频率。

2014-02-10

c

先来说下原理：用c程序调用ioctl驱动来调用键盘上的显示灯。使其按照我们的程序来实现亮灭。再来说下我要做这个功能的初衷：现在有一种lifi技术，也就是各国都在研空的利用可见光上网的技术。这种技术的优点和缺点在网上一搜一大把，我就不在这里缀述了。我要做在是：实现这种可见光并将其接收，在实现通讯的基础上，解决数据上行的难题。好了，不多说，看代码。

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适合孩子学习的编程语言，turtle

2013-12-19

编程设计
- 该例来自 http://banajim.myweb.port.ac.uk/recreation/logoscripts
- 画房子
先来个例子，简单画房子（带烟囱） LOGO语言是为教育儿童编程开发的，所以语法很简单。它基于LISP，还附加有一个海龟绘图系统(Turtle Graphic)。我们通过编写的程序，可以控制屏幕上的小海龟的移动，并在画面上留下行动的轨迹。你可以用LOGO语言画出一幅不错的画来。于是在Ubuntu下搜索，找到KTurtle，是LOGO的一个变体。它的语法是面向过程的，类似于C，支持数学和逻辑运算，可以实现循环 (for)或者选择 (if)。常见的命令包括forward, backward, turnleft, turnright，用于控制小海龟的前进后退和转向。另外也可以用ask和print来输入输出。变量用$a的形式表示。在绘图过程中，小海龟不断移动，同时左侧也会用黄色标明运行到哪一行了，非常有趣。一句话来形容，麻雀虽小，五脏俱齐。

该例来自 http://banajim.myweb.port.ac.uk/recreation/logoscripts

画房子
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迷信与科学

2011-08-05

无谓的科学

迷信是什么？科学又是什么？这个问题很少人有过仔细研究…

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香港行程计划（已经完成旅行，记录下来留做记念）

2011-05-26

旅游
#=============================================================================

FileName: 行程.txt

Desc:

Author: zwssd1980

Email: zwssd1980@163.com

HomePage: http://zwssd1980.blog.163.com/

Version: 0.0.1

LastChange: 2011-03-29 10:44:11

History:

#=============================================================================
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用python实现chinaren（中国人）幼儿园（校友录）照片的批量下载

2011-04-15

python

啥都不说了，看代码。小孩子自从上了幼儿园以后，老师就将好多孩子在幼儿园的照片发到了网上，由于数量很多，一张一张下载起来太费劲了，故作此程序，希望能给自己带来方便的同时也给大家带来方便。好，看代码：

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不太寻常的月历

2011-03-22

生活

格里高利历法改革(Gregorian Reformation)被认为发生于 1752 年 9 月 3 日. 在此之前, 多数国家已经认可这项改革( 尽管有一些直到 20 世纪初才认可它).

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用vim搭建c/c++IDE2011-02-23

2011-03-10

技术文章

我用的是Ubuntu的Server版本，安装是很容易的，非常之简单，不过安装之后的操作系统几乎是一个空白的操作系统，几乎什么都没有，所以都得安装好。

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一个支持上传的简单HTTPServer2011-01-21

2011-03-10

python

现在，很多人都知道，Python 里有个 SimpleHTTPServer，可以拿来方便地共享文件。比如，你要发送某个文件给局域网里的同学，你只要 cd 到所在路径，然后执行这么一行： python -m SimpleHTTPServer 人家就可以通过 http://你的IP:8000 来访问你要共享的文件了。像我早已把这个命令做了 alias。但是，某一天，你需要从同学哪里复制一个文件到本机，然后你就会跟你同学说，XX，共享下某目录。当你以为可以用 HTTP 来访问他的 8000 端口的时候，他却告诉你，不好意思，我是 Windows 啦~~当然你可以选择在他 Windows 里装个 Python，也可以选择使用 Samba、FTP 等其他方式，但是有没有和之前一样简单的方式呢~当然了，这时候，你就需要一个支持上传的简单 HTTP Server，也就是我这个：SimpleHTTPServerWithUpload.py，哈哈。然后你开个服务，让人家上传即可。其实这个就是修改自 SimpleHTTPServer 的，只不过我给它加上了最原始的上传功能，安全性方面没有验证过，不过理论上应该不会没人一直开着这个吧？另外，我对 RFC1867 的理解不一定透彻，所以，Use on your own risk! 截图如下：代码在此，单文件、零配置，直接用 Python 运行。 #!/usr/bin/env python “"”Simple HTTP Server With Upload. This module builds on BaseHTTPServer by implementing the standard GET and HEAD requests in a fairly straightforward manner. “”” version = “0.1” all = [“SimpleHTTPRequestHandler”] author = “bones7456” home_page = “http://li2z.cn/” import os import posixpath import BaseHTTPServer import urllib import cgi import shutil import mimetypes import re try: from cStringIO import StringIO except ImportError: from StringIO import StringIO class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler): “"”Simple HTTP request handler with GET/HEAD/POST commands. This serves files from the current directory and any of its subdirectories. The MIME type for files is determined by calling the .guess_type() method. And can reveive file uploaded by client. The GET/HEAD/POST requests are identical except that the HEAD request omits the actual contents of the file. “”” server_version = “SimpleHTTPWithUpload/” + version def do_GET(self): “"”Serve a GET request.””” f = self.send_head() if f: self.copyfile(f, self.wfile) f.close() def do_HEAD(self): “"”Serve a HEAD request.””” f = self.send_head() if f: f.close() def do_POST(self): “"”Serve a POST request.””” r, info = self.deal_post_data() print r, info, “by: “, self.client_address f = StringIO() f.write(‘<!DOCTYPE html PUBLIC “-//W3C//DTD HTML 3.2 Final//EN”>’) f.write(“<html>\nUpload Result Page\n”) f.write(“<body>\n<h2>Upload Result Page</h2>\n”) f.write(“<hr>\n”) if r: f.write(“Success:”) else: f.write(“Failed:”) f.write(info) f.write(“
<a href="%s">back</a>” % self.headers[‘referer’]) f.write(“<hr>Powered By: bones7456, check new version at “) f.write(“<a href="http://li2z.cn/?s=SimpleHTTPServerWithUpload">”) f.write(“here</a>.</body>\n</html>\n”) length = f.tell() f.seek(0) self.send_response(200) self.send_header(“Content-type”, “text/html”) self.send_header(“Content-Length”, str(length)) self.end_headers() if f: self.copyfile(f, self.wfile) f.close() def deal_post_data(self): boundary = self.headers.plisttext.split(“=”)[1] remainbytes = int(self.headers[‘content-length’]) line = self.rfile.readline() remainbytes -= len(line) if not boundary in line: return (False, “Content NOT begin with boundary”) line = self.rfile.readline() remainbytes -= len(line) fn = re.findall(r’Content-Disposition.name=”file”; filename=”(.)”’, line) if not fn: return (False, “Can’t find out file name…”) path = self.translate_path(self.path) fn = os.path.join(path, fn[0]) while os.path.exists(fn): fn += “_” line = self.rfile.readline() remainbytes -= len(line) line = self.rfile.readline() remainbytes -= len(line) try: out = open(fn, ‘wb’) except IOError: return (False, “Can’t create file to write, do you have permission to write?”) preline = self.rfile.readline() remainbytes -= len(preline) while remainbytes > 0: line = self.rfile.readline() remainbytes -= len(line) if boundary in line: preline = preline[0:-1] if preline.endswith(‘\r’): preline = preline[0:-1] out.write(preline) out.close() return (True, “File ‘%s’ upload success!” % fn) else: out.write(preline) preline = line return (False, “Unexpect Ends of data.”) def send_head(self): “"”Common code for GET and HEAD commands. This sends the response code and MIME headers. Return value is either a file object (which has to be copied to the outputfile by the caller unless the command was HEAD, and must be closed by the caller under all circumstances), or None, in which case the caller has nothing further to do. “”” path = self.translate_path(self.path) f = None if os.path.isdir(path): if not self.path.endswith(‘/’): # redirect browser - doing basically what apache does self.send_response(301) self.send_header(“Location”, self.path + “/”) self.end_headers() return None for index in “index.html”, “index.htm”: index = os.path.join(path, index) if os.path.exists(index): path = index break else: return self.list_directory(path) ctype = self.guess_type(path) try: # Always read in binary mode. Opening files in text mode may cause # newline translations, making the actual size of the content # transmitted less than the content-length! f = open(path, ‘rb’) except IOError: self.send_error(404, “File not found”) return None self.send_response(200) self.send_header(“Content-type”, ctype) fs = os.fstat(f.fileno()) self.send_header(“Content-Length”, str(fs[6])) self.send_header(“Last-Modified”, self.date_time_string(fs.st_mtime)) self.end_headers() return f def list_directory(self, path): “"”Helper to produce a directory listing (absent index.html). Return value is either a file object, or None (indicating an error). In either case, the headers are sent, making the interface the same as for send_head(). “”” try: list = os.listdir(path) except os.error: self.send_error(404, “No permission to list directory”) return None list.sort(key=lambda a: a.lower()) f = StringIO() displaypath = cgi.escape(urllib.unquote(self.path)) f.write(‘<!DOCTYPE html PUBLIC “-//W3C//DTD HTML 3.2 Final//EN”>’) f.write(“<html>\nDirectory listing for %s\n” % displaypath) f.write(“<body>\n<h2>Directory listing for %s</h2>\n” % displaypath) f.write(“<hr>\n”) f.write(“<form ENCTYPE="multipart/form-data" method="post">”) f.write(“<input name="file" type="file"/>”) f.write(“<input type="submit" value="upload"/></form>\n”) f.write(“<hr>\n<ul>\n”) for name in list: fullname = os.path.join(path, name) displayname = linkname = name # Append / for directories or @ for symbolic links if os.path.isdir(fullname): displayname = name + “/” linkname = name + “/” if os.path.islink(fullname): displayname = name + “@” # Note: a link to a directory displays with @ and links with / f.write(‘<li>%s\n’ % (urllib.quote(linkname), cgi.escape(displayname))) f.write(“</ul>\n<hr>\n</body>\n</html>\n”) length = f.tell() f.seek(0) self.send_response(200) self.send_header(“Content-type”, “text/html”) self.send_header(“Content-Length”, str(length)) self.end_headers() return f def translate_path(self, path): “"”Translate a /-separated PATH to the local filename syntax. Components that mean special things to the local file system (e.g. drive or directory names) are ignored. (XXX They should probably be diagnosed.) “”” # abandon query parameters path = path.split(‘?’,1)[0] path = path.split(‘#’,1)[0] path = posixpath.normpath(urllib.unquote(path)) words = path.split(‘/’) words = filter(None, words) path = os.getcwd() for word in words: drive, word = os.path.splitdrive(word) head, word = os.path.split(word) if word in (os.curdir, os.pardir): continue path = os.path.join(path, word) return path def copyfile(self, source, outputfile): “"”Copy all data between two file objects. The SOURCE argument is a file object open for reading (or anything with a read() method) and the DESTINATION argument is a file object open for writing (or anything with a write() method). The only reason for overriding this would be to change the block size or perhaps to replace newlines by CRLF – note however that this the default server uses this to copy binary data as well. “”” shutil.copyfileobj(source, outputfile) def guess_type(self, path): “"”Guess the type of a file. Argument is a PATH (a filename). Return value is a string of the form type/subtype, usable for a MIME Content-type header. The default implementation looks the file’s extension up in the table self.extensions_map, using application/octet-stream as a default; however it would be permissible (if slow) to look inside the data to make a better guess. “”” base, ext = posixpath.splitext(path) if ext in self.extensions_map: return self.extensions_map[ext] ext = ext.lower() if ext in self.extensions_map: return self.extensions_map[ext] else: return self.extensions_map[’’] if not mimetypes.inited: mimetypes.init() # try to read system mime.types extensions_map = mimetypes.types_map.copy() extensions_map.update({ ‘’: ‘application/octet-stream’, # Default ‘.py’: ‘text/plain’, ‘.c’: ‘text/plain’, ‘.h’: ‘text/plain’, }) def test(HandlerClass = SimpleHTTPRequestHandler, ServerClass = BaseHTTPServer.HTTPServer): BaseHTTPServer.test(HandlerClass, ServerClass) if name == ‘main’: test()

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python求1980年到2029年众数和2010-01-07

2011-03-10

python

原创文章，转载时请注明地址：http://zwssd1980.blog.163.com/blog/static/30296492011210102033425/ http://zwssdzwssd.appspot.com/log/83.html python 求1980年到2029年众数和注：还不能求所有数的众数和，慢慢完善。 # -- coding: utf-8 -- import strin myyear = str(1980) for j in range(50): zsh = int(myyear[0])+int(myyear[1])+int(myyear[2])+int(myyear[3]) if zsh>10: zsh = str(zsh) zsh = int(zsh[0])+int(zsh[1]) print ‘年份：’+myyear+’众数和是：’+str(zsh) myyear = int(myyear) myyear += 1 myyear = str(myyear)

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用python写的文件上传下载软件2010年12月16日弄的累，不过一劳永逸的哈哈2010-12-16

2011-03-10

python

用python写的文件上传下载软件登陆用的是主动模式问题1：批量上传还没做好 (已经修改)问题2：下载还没改造好，会比较文件大小，但只修改了几个字符则会认为文件大小相同而不下载 2010年12月16日星期五上午 11：07 修改好上传文件比较大小相同后不上传文件的问题，并且有进度显示。 2010年12月20日星期一下午1：56 修改了登陆为一次登陆，上传多个文件后退出登陆。 # -- coding: utf-8 -- from ftplib import FTP import sys import os.path import string,datetime,time import socket class MyFTP(FTP): ‘’’’’ conncet to FTP Server ‘’’ def ConnectFTP(self,remoteip,remoteport,loginname,loginpassword): ftp=MyFTP() try: ftp.connect(remoteip,remoteport) except: return (0,’conncet failed’) else: try: ftp.set_pasv(0) ftp.login(loginname,loginpassword) except: return (0,’login failed’) else: return (1,ftp) def download(self,res,remotePath,localPath): #connect to the FTP Server and check the return #res = self.ConnectFTP(remoteHost,remotePort,loginname,loginpassword) if(res[0]!=1): print res[1] sys.exit() #change the remote directory and get the remote file size ftp=res[1] #ftp.set_pasv(0) dires = self.splitpath(remotePath) if dires[0]: ftp.cwd(dires[0]) remotefile=dires[1] print dires[0]+’ ‘+ dires[1] fsize=ftp.size(remotefile) if fsize==0 : return #check local file isn’t exists and get the local file size lsize=0L if os.path.exists(localPath): lsize=os.stat(localPath).st_size if lsize >= fsize: print ‘local file is bigger or equal remote file’ return blocksize=1024 cmpsize=lsize ftp.voidcmd(‘TYPE I’) conn = ftp.transfercmd(‘RETR ‘+remotefile,lsize) lwrite=open(localPath,’ab’) while True: data=conn.recv(blocksize) if not data: break lwrite.write(data) cmpsize+=len(data) print ‘\b’30,’download process:%.2f%%’%(float(cmpsize)/fsize100), lwrite.close() ftp.voidcmd(‘NOOP’) ftp.voidresp() conn.close() ftp.quit() def upload(self,res,remotepath,localpath,callback=None): if not os.path.exists(localpath): print “Local file doesn’t exists” return self.set_debuglevel(2) if res[0]!=1: print res[1] sys.exit() ftp=res[1] remote=self.splitpath(remotepath) ftp.cwd(remote[0]) rsize=0L try: rsize=ftp.size(remote[1]) except: pass if (rsize==None): rsize=0L lsize=os.stat(localpath).st_size if (lsize): localf=open(localpath,’rb’) ftp.voidcmd(‘TYPE I’) if (rsize==None): rsize = 0L datasock,esize=ftp.ntransfercmd(“APPE “+remote[1],0) else: datasock,esize=ftp.ntransfercmd(“STOR “+remote[1],0) cmpsize=0 while True: buf=localf.read(1024) if not len(buf): print ‘\rno data break’ break datasock.sendall(buf) if callback: callback(buf) cmpsize+=len(buf) print ‘\b’30,’uploading %.2f%%’%(float(cmpsize)/lsize100) if cmpsize==lsize: print remote[0]+remote[1]+’ 文件上传完成’ break datasock.close() #print ‘close data handle’ localf.close() #print ‘close local file handle’ ftp.voidcmd(‘NOOP’) #print ‘keep alive cmd success’ ftp.voidresp() #print ‘No loop cmd’ def closeftp(self,ftp): ftp.quit() print ‘现在退出FTP!’ def splitpath(self,remotepath): position=remotepath.rfind(‘/’) return (remotepath[:position+1],remotepath[position+1:]) def upload_files(self,remotehost,remoteport,loginname,loginpassword,remotepath,localpath,callback=None): if not os.path.exists(localpath): print “Local file doesn’t exists” return self.set_debuglevel(2) res=self.ConnectFTP(remotehost,remoteport,loginname,loginpassword) if not os.path.isdir(remotepath): return localnames = os.listdir(localdir) ftp.cwd(remotedir) for item in localnames: src = os.path.join(localdir, item) if os.path.isdir(src): try: ftp.mkd(item) except: self.debug_print(‘目录已经存在 %s’ %item) self.upload_files(src, item) else: self.upload_file(src, item) #ftp.cwd(‘..’) def debug_print(s): print (s) if name==’main’: lf = MyFTP() res=lf.ConnectFTP(‘...’,’21’,’username’,’password’) filename1 = ‘zhpj.php’ filename2 = ‘templates/newtheme/zhpj.html’ filename3 = ‘zhpj_ajax.php’ filename4 = ‘templates/newtheme/inc/pj.php’ filename5 = ‘templates/newtheme/inc/repj.php’ osdir = ‘/media/4C88-A7AD/work/yidaba/shop/’ ftpdir = ‘/ydbv10/shop/index/shop/’ lf.upload(res,ftpdir+filename1,osdir+filename1) lf.upload(res,ftpdir+filename2,osdir+filename2) lf.upload(res,ftpdir+filename3,osdir+filename3) lf.upload(res,ftpdir+filename4,osdir+filename4) lf.upload(res,ftpdir+filename5,osdir+filename5) lf.closeftp(res[1]) #lf.upload_files(‘...’,’21’,’username’,’password’,ftpdir,osdir) #暂时先不能用批量更新目录功能，可能会影响别人共同开发

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3/21

欢迎来的大伟的技术栈！

该例来自 http://banajim.myweb.port.ac.uk/recreation/logoscripts

画房子

FileName: 行程.txt

Desc:

Author: zwssd1980

Email: zwssd1980@163.com

HomePage: http://zwssd1980.blog.163.com/

Version: 0.0.1

LastChange: 2011-03-29 10:44:11

History: