Re: Development tools and practices for Pythonistas
For what it's worth, the Python core developers have selected Mercurial. I personally use git and love it. Most open-source people seem to use one or the other of the two. They're pretty similar in most ways. Look at the big two sites for open-source repositories -- github and bitbucket. One's git, the other Mercurial. I don't think you can go wrong picking either one. -- http://mail.python.org/mailman/listinfo/python-list
Re: Development tools and practices for Pythonistas
Depends on the project, but I'd start with git the time I created the first file in my project. If you're in the habit of committing then you can easily rollback missteps. If you're in the habit of making branches you can experiment without breaking the currently-working code. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script
Write a small GUI in the easy-to-use and cross-platform wxPython module. All this GUI needs to do is allow them to input the arguments. The code can then import your stand-alone version of the script and execute its code, passing the arguments in. wxPython is just Python. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script
On Oct 20, 2010, at 2:00 PM, Grant Edwards wrote: On 2010-10-20, Shawn Milochik sh...@milochik.com wrote: ript and execute its code, passing the arguments in. wxPython is just Python. No, it's not. You can't assume that any windows machine with Python installed also has wxPython installed. The only GUI kit that you can come close to assuming is Tkinter. I didn't mean to imply that wxPython is in the standard library. Just that you write Python code when you create a wxPython app. I apologize for the lack of clarity. I recommended wxPython instead of Tkinter because of the opinions I've heard from other Python developers who prefer the former (I've never used Tkinter). Also, wxPython automatically looks native Mac, Windows, and Linux. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: pylint -- should I just ignore it sometimes?
Just to be pedantic (or maybe even helpful), the use of the comma after the exception is deprecated in favor of 'as.' So: except ValueError as ex: not: except ValueError, ex: I don't know how far back in Python versions this syntax reaches, but if yours supports it then it's probably a good idea to get into the habit. This way, you can catch multiple exceptions in a tuple without confusing the interpreter: except ValueError, IndexError as ex: Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: When will Python go mainstream like Java?
When will Java be popular enough to replace other languages in their own environments, the way Python has done to Java (Jython) and .NET (IronPython)? Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: File transfer with python
Have a look at Paramiko. It lets you do secure transfers easily (scp/sftp) http://www.lag.net/paramiko/ Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Python books, literature etc
Search Google. You'll find it all. Search this list's archives. This kind of thing has been discussed a thousand times. It also wouldn't hurt to brush up on this: http://catb.org/~esr/faqs/smart-questions.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie help- Can multiple instances with multiple names automatically created.
You could put them in a dictionary with the key being the name, instead of a list. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie help- Can multiple instances with multiple names automatically created.
On Jan 4, 2010, at 5:59 PM, Nav wrote:
On Jan 4, 4:54 pm, Chris Rebert c...@rebertia.com wrote:
On Mon, Jan 4, 2010 at 1:32 PM, Shawn Milochik sh...@milochik.com wrote:
You could put them in a dictionary with the key being the name, instead of
a list.
To illustrate that for the OP:
name2drink = {}
for booze in liquors:
for juice in juices:
name = juice + +booze # or however you're naming them
drink = Bottle(booze, juice)
name2drink[name] = drink
#example use
favorite = name2drink[apple wine]
favorite.rating = 9/10
typing
favorite = such and such is what I am trying to avoid.
I want to be able to use the name 'apple_wine' as the variable which
has the object apple wine but not have to do this manually as you did
with favorite.
Then don't assign a variable to favorite, and just use name2drink[apple wine].
--
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Re: Simple distributed example for learning purposes?
On Dec 27, 2009, at 1:23 PM, Lie Ryan wrote: IMHO, that's a poor example. Rather than writing a fuzzy search algorithm, it's easier to write a normalizer before entering data to the index (or before comparing the search string with the corpus' string). -- It does seem like that at first, but it turns out that you can't normalize this data, for many reasons. With address data: one address may have suite data and the other might not the same city may have multiple zip codes incoming addresses may be missing information typos are common sometimes Route 35 is the same road as Convery Boulevard etc. etc. etc. With names: you have to compare with and without the middle name compare with and without the title (Mrs., Dr., Mr., Ms.) compare with and without the suffix (PhD., Sr., Junior, III, etc.) typos are VERY common what if John Henry Smith goes by Henry Smith? what if Xu Wang goes by John Wang (happens all the time) maiden name versus married name etc. etc. etc. This is a major, real-world issue that remains unsolved, and companies that do a decent job at it make millions of dollars a year from their clients. One of my old jobs made tens of millions a year (and growing FAST) in the medical industry alone. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple distributed example for learning purposes?
On Dec 28, 2009, at 11:28 AM, Lie Ryan wrote: I agree fuzzy searches is indispensable in certain cases, but from the way you're describing the issue, it appears that half of your unsolved problems comes due to the poor design of the database. I agree, that the other halves (e.g. typos, multiple names/addresses) are indeed unsolvable. Your comments make some sense, but they do not work when it comes to real-world data. Trust me, I've seen all kinds of data from all kinds of clients, and no matter how well-designed and well-indexed your database is, the incoming data is going to be a problem. Shawn-- http://mail.python.org/mailman/listinfo/python-list
Re: Simple distributed example for learning purposes?
The special features of the Shrek DVD showed how the rendering took so much processing power that everyone's workstation was used overnight as a rendering farm. Some kind of video rendering would make a great example. However, it might be a lot of overhead for you to set up, unless you can find someone with expertise in the area. The nice thing about this is that it would be relevant to the audience. Also, if you describe what goes into processing a single frame in enough depth that they appreciate it, they'll really get the power of distributed processing. Something else incredibly time-expensive but much easier to set up would be matching of names and addresses. I worked at a company where this was, at its very core, the primary function of the business model. Considering the different ways of entering simple data, many comparisons must be made. This takes a lot of time, and even then the match rates aren't necessarily going to be very high. Here are some problems with matching: Bill versus William '52 10th Street' | '52 tenth street' 'E. Smith street' | 'E smith street' | 'east smith street' 'Bill Smith' | 'Smith, Bill' 'William Smith Jr' | 'William Smith Junior' 'Dr. W. Smith' | 'William Smith' 'Michael Norman Smith' | 'Michael N. Smith' | 'Michael Smith' | 'Smith, Michael' | 'Smith, Michael N.' | 'Smith, Michael Norman' The list goes on and on, ad nauseum. Not to mention geocoding, married and maiden names, and scoring partial name matches with distance proximity matches. Another nice thing is that, depending on how much time you want to spend on it, you can have the students refine the matching rules over time, and see how those rules effect the match rate and the processing time. On the downside, your class will not have the joy of being taught the 'ideal solution' to this problem at the end; if you come up with that, you'll be able to go into business and make millions of dollars a year. ^_^ Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: How to iterate the input over a particular size?
A couple of notes: Your code is too packed together. That makes it hard to read. Put in some whitespace (and comments, where necessary), and put spaces around your equal signs (x = 23 instead of x=23). That said, here's something I threw together: #!/usr/bin/env python def chop_list(words, size = 9): Take a list, returning values from the end of the list, and the original list minus those values. chop_list(['test', 'with', 'four', 'words'], 2) (['test', 'with'], ['four', 'words']) chop_list(['test', 'with', 'four', 'words'], 3) (['test'], ['with', 'four', 'words']) chop_list(['test', 'with', 'four', 'words'], 4) ([], ['test', 'with', 'four', 'words']) chopped = words[-size:] old_to_return = len(words) - len(chopped) return words[:old_to_return], chopped if __name__ == '__main__': import doctest doctest.testmod() sample_string = '''There are more than nine words here. I know because I wrote them.''' word_list = sample_string.split() while word_list: word_list, new = chop_list(word_list) print Pulled off:\t%s\n\tRemaining: %s % (new, word_list) -- http://mail.python.org/mailman/listinfo/python-list
Re: DB Table Processor?
It sounds like you're looking for SQLAlchemy. http://www.sqlalchemy.org/ Enjoy! Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: handling https sites
On Jun 26, 2009, at 12:08 PM, padfoot wrote: Sir, Is there any module in python to open https sites through a proxy.I am connectyed to the net via a proxy server and i am unable to crawl https sites. -- http://mail.python.org/mailman/listinfo/python-list Check out the Scrape the Web series from the 2009 PyCon: http://advocacy.python.org/podcasts/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Your Favorite Python Book
It depends on what you want to do. If you still want to beef up on general knowledge, maybe skim through The Python Cookbook or something reference-like. If you feel ready to start doing something with Python, look into one of the recent titles that applies Python for a specific purpose. Examples: Gray Hat Python (debugging, reverse engineering) Natural Language Processing with Python (pre-order at this time) Any up-to-date (version 1.0 and up) Django book (if you're into Web development) Expert Python Programming (best practices) Beginning Python Visualization (presenting data visually) Programming Collective Intelligence (extracting valuable information from public data sources, and more) Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Fill Javascript form
How is the form written in JavaScript? Is it dynamically generated? In any case, can you just send a POST request if you know the values required? -- http://mail.python.org/mailman/listinfo/python-list
Re: Your Favorite Python Book
On Mon, May 11, 2009 at 5:52 PM, pyt...@bdurham.com wrote: Sam, In no specific order (I brought them all): Wesley Chun's Core Python Programming David Mertz's Text Processing in Python (older, but excellent) Mark Lutz's Learning Python All highly recommended. Best of luck on your Python journey! Regards, Malcolm -- http://mail.python.org/mailman/listinfo/python-list I second the Wesley Chun recommendation wholeheartedly. Also, Text Processing in Python is available for free online. http://gnosis.cx/TPiP/ Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Beginning Python Visualization by Shai Vaingast
Thanks for the review and the podcast. I ordered the book on Friday. I look forward to playing with it. Also (assuming you're Ron Stephens), thanks for the Python 411 podcast. It's a great resource, and I recommend it to all list members. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Downloading most recently modified files
On Sun, May 10, 2009 at 1:04 PM, AllenLars allenr...@gmail.com wrote: Thanks Shawn. I went through the ftplib info and I was able to generate a list. I am needing to figure out parsing the list. AllenLars Well, start by separating out the date and the file name. You'll want the date for sorting, and the file name for when you decide to download it. If you want help with regular expressions, let me know. If so, post a sample of the code you have so far for parsing, sample input (the raw listing), and sample output showing exactly how you want it to look. As long as you write some code (even if it's not working the way you want), I don't mind helping you fix it up. -- http://mail.python.org/mailman/listinfo/python-list
OT (humor): 'import antigravity' in action!
I know you've probably all seen this 50 times, but just in case: http://xkcd.com/353/ And here's the result: http://icanhascheezburger.com/2009/05/06/funny-pictures-behavior-20/ -- http://mail.python.org/mailman/listinfo/python-list
Re: xml in python
On Fri, May 8, 2009 at 3:46 AM, Rustom Mody rustompm...@gmail.com wrote: Can someone give me a heads up on xml parsing in python? The context is that I want to write a simple docbook to text converter. DOM is alright -- dont want to break my head with SAX just for performance when my documents are not likely to be large. My problem is that there seems to be so many nearly equivalent ways (Pyxml? Amara?) some of which have moved from 3rd party to builtin status that I am not clear what is the current method of choice. Thanks -- I've been using minidom for simple XML processing with success. The XML module seems to be the way to go, considering how many of its child modules are listed on http://docs.python.org/library/. import xml.dom.minidom as minidom Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Downloading most recently modified files
On Thu, May 7, 2009 at 2:19 PM, AllenLars allenr...@gmail.com wrote: I am trying to code a script that will allow me to go to ftp site and download files based on most recently modified file (date, time). I am brand new to programming. Any and all help is appreciated. --snip I've actually written code to do this, and it's fairly easy. Just use the FTP module to run the ls (directory listing) command and parse the results to get the filenames and timestamps. Then you will be able to easily do download requests for the file(s) you want. Perhaps someone else on the list can chime in with a more elegant solution. Here's enough to get you started: from ftplib import FTP #(http://docs.python.org/library/ftplib.html) ShawnMilo -- http://mail.python.org/mailman/listinfo/python-list
Re: Copy Paste in a Dos box (was: Pyhton script to call another program)
On Wed, May 6, 2009 at 1:54 PM, Tim Chase python.l...@tim.thechases.com wrote: for windows this works: (can't cut and paste from a dos box!###%*!!!) Depending on how it was spawned, you can either right-click in the window and choose Mark/Paste (when marking, use enter to terminate the selection; and selections are blockwise rectangular rather than linewise or characterwise). Alternatively, if you click on the system menu (the icon in the title-bar with resize/minimize/maximize/close/help), there should be an Edit submenu with the same options within. A pain, but at least feasible. snip I know I'm coming to the conversation late, but here's what I do*: 1. Use Cygwin. (http://www.cygwin.com/) 2. Use PuttyCYG (http://code.google.com/p/puttycyg/) That way, you can basically use PuTTY to shell into your Windows box. Note: If you are familiar with the Linux command line, you will be in love with this solution. If you're a Windows-only type, then be forewarned that doing this will require you to type Unix/Linux commands (for the most part) instead of DOS commands. *Disclaimer: I use a Mac and Linux. This is my workaround when forced to use Windows. Your environment preferences may vary. -- http://mail.python.org/mailman/listinfo/python-list
Re: Copy Paste in a Dos box (was: Pyhton script to call another program)
On Wed, May 6, 2009 at 2:39 PM, Grant Edwards inva...@invalid wrote: On 2009-05-06, Shawn Milochik sh...@milochik.com wrote: I know I'm coming to the conversation late, but here's what I do*: 1. Use Cygwin. (http://www.cygwin.com/) 2. Use PuttyCYG (http://code.google.com/p/puttycyg/) That way, you can basically use PuTTY to shell into your Windows box. Better yet, set up sshd in your Cygwin install, and then use whatever terminal you normally use on your Linux/MacOS box to ssh into the Cygwin box. When run that way, windows is almost usable... -- Grant Edwards snip True, but when I'm using Cygwin, that means I'm at work and don't have a non-MS OS available. Of course I can open an ssh session to my home machine for sanity (or kicking off a torrent download at home), but I don't have a *nix-based OS at the day job. Lanching DSL embedded to use the terminal seems a bit much. ^_^ Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Parsing text
On Wed, May 6, 2009 at 2:32 PM, iainemsley iainems...@googlemail.com wrote:
Hi,
I'm trying to write a fairly basic text parser to split up scenes and
acts in plays to put them into XML. I've managed to get the text split
into the blocks of scenes and acts and returned correctly but I'm
trying to refine this and get the relevant scene number when the split
is made but I keep getting an NoneType error trying to read the block
inside the for loop and nothing is being returned. I'd be grateful for
some suggestions as to how to get this working.
for scene in text.split('Scene'):
num = re.compile(^\s\[0-9, i{1,4}, v], re.I)
textNum = num.match(scene)
if textNum:
print textNum
else:
print No scene number
m = 'div type=scene'
m += scene
m += '\div'
print m
Thanks, Iain
Can you provide some sample input so we can recreate the problem?
Also, consider something like this instead of the concatenation:
m = 'div type=scene%s/div' % (scene,)
--
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Re: Copy Paste in a Dos box
snip Damn! I may just go back to using Python from the command prompt instead of using IDLE. On second thought, IDLE is way too useful for indenting, dedenting, commenting and uncommenting blocks of code. Can't go back to using Notepad. snip You might want to check out iPython, then -- it's an interactive Python interpreter that's meant to be used as a shell environment. It has very useful help and auto-completion features. If you're just talking about an IDE, you might want to try TextMate if you're on a Mac. It's great. Notepad++ is good on Windows, but I haven't used it in Python much, so I don't know about its indentation features. -- http://mail.python.org/mailman/listinfo/python-list
Re: Battleship style game
Thanks for the tips, everybody. I've cleaned it up, and learned some useful things from your comments and the reading they led to. http://shawnmilo.com/ships/ -- http://mail.python.org/mailman/listinfo/python-list
Re: The Python's regex different from Perl's , I want know what's the different?
The regular expression syntax is basically exactly the same. The main difference is that a regex can't just be written into a statement as part of the syntax; you have to create a regular expression object and use its methods. So, instead of: new_thing =~ s/pattern/replacement/ it's: myPattern = re.compile(r'pattern') new_thing = myPattern.sub(replacement, input_string) or: new_thing = re.sub(pattern, replacement, input_string) Also, backreferences are \1 instead of $1, and you have to escape the backslash or use a raw string for the backslash. I've found this page to be pretty helpful: http://www.regular-expressions.info/python.html Shawn -- http://mail.python.org/mailman/listinfo/python-list
Battleship style game
I started learning Java for fun, and the first project assignment in the book is to create a game like Battleship. So, of course, I wrote it in Python first, just for fun. I haven't had the time to look up all the Java syntax. So, here it is, fully functional. I thought I'd throw it out there and see if anyone would like to offer any useful tips. I'm not claiming it's bulletproof, but it works. I just kind of came up with all the methods off of the top of my head, so if anyone has any suggestions for more elegant or efficient code, please let me know. http://shawnmilo.com/ships/ Thanks, Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Battleship style game
On Wed, Feb 25, 2009 at 11:38 AM, Marco Mariani ma...@sferacarta.com wrote: Yes it's in Python alright, but it's not Pythonese yet. You could try avoiding the getter/setter stuff, and camelCase method naming, things like that, for a start. -- http://mail.python.org/mailman/listinfo/python-list What do you mean avoiding the getter/setter stuff? If I understand correctly, you're saying to directly access the attributes, which I specifically want to avoid because I may want to enforce some rules (such as not changing a ship length after it's created). The camel-case thing I get -- I use that and this_type quite a bit, probably because of the inconsistency of the languages I use regularly, and standards at work and conventions in my hobby programming. -- http://mail.python.org/mailman/listinfo/python-list
Re: Battleship style game
Thanks. I wasn't aware of the property() function, but I read up on it. I modified the Vessels.py file, but not the board file (except where necessary to handle the changes made to Vessels. Is this better? http://shawnmilo.com/ships/ships2/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Battleship style game
On Wed, Feb 25, 2009 at 3:15 PM, Diez B. Roggisch de...@nospam.web.de wrote: Not really. The point about properties is that you *can* make attribute access trigger getter or setter code. But not that you do unless there is an actual reason for that. The way you do it now is simply introducing clutter, without benefit. Your class would be half the current size - without loss of functionality. Diez -- http://mail.python.org/mailman/listinfo/python-list It is true that it would be fewer lines of code with the same functionality, but it's better practice to have that framework in place so that any changes made in the future wouldn't break any of the code accessing my class. Obviously this is a fairly simple game that has a fixed set of rules, but I'm trying to cultivate good habits, and I don't think that doing it this way is anti-Pythonic. Unless, of course, anything I said is wrong, which is always possible. If I'm missing a bigger-picture idea, I'd like to know about it. Thanks, Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: re.sub and named groups
Book recommendation: _Mastering Regular Expressions_, Jeffrey Friedl -- Aahz (a...@pythoncraft.com) * http://www.pythoncraft.com/ I wholeheartedly second this! The third edition is out now. -- http://mail.python.org/mailman/listinfo/python-list
Re: Searching a file for multiple strings (PS)
On Sun, Feb 1, 2009 at 1:14 AM, John Machin sjmac...@lexicon.net wrote: On Feb 1, 3:39 pm, Shawn Milochik sh...@milochik.com wrote: Not to discourage the use of Python, but it seems that fgrep with the -f flag already does exactly what you want. If you're on Windows, you can get the Windows version of fgrep here: http://unxutils.sourceforge.net/ That URL is antique and a dead end. When you find the actual sourceforge project page (http://sourceforge.net/projects/unxutils/) and browse the forums and the CVS repository, you'll see tumbleweed blowing down Main Street and not much else (besides a few whinges about that dead end URL, and many unanswered issues). Alternative: http://gnuwin32.sourceforge.net/ -- http://mail.python.org/mailman/listinfo/python-list Thanks very much for the update. I had been using the older versions (on the rare occasions I've had to use Windows). I didn't know there was a currently-maintained version. -- http://mail.python.org/mailman/listinfo/python-list
Re: Searching a file for multiple strings (PS)
On Sat, Jan 31, 2009 at 3:00 PM, Tim Chase python.l...@tim.thechases.com wrote: I'm fairly new with python and am trying to build a fairly simple search script. Ultimately, I'm wanting to search a directory of files for multiple user inputted keywords. I've already written a script that can search for a single string through multiple files, now I just need to adapt it to multiple strings. Not to discourage the use of Python, but it seems that fgrep with the -f flag already does exactly what you want. If you're on Windows, you can get the Windows version of fgrep here: http://unxutils.sourceforge.net/ Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: spam update
On Tue, Nov 18, 2008 at 11:23 AM, [EMAIL PROTECTED] wrote: With some help from the python.org postmasters over the weekend I figured out why some seemingly obvious spam messages seem to be making it to the python-list@python.org mailing list. Messages gatewayed from Usenet don't pass through the spam filters. Mailman simply distributes them. There is still no resolution, but at least I understand the cause now. For now, mailing list users please be patient as we try to resolve this issue. Thanks, -- Skip Montanaro - [EMAIL PROTECTED] - http://smontanaro.dyndns.org/ -- http://mail.python.org/mailman/listinfo/python-list It's like the never-ending story. This exact explanation was given to the list over six months ago (in April) , along with the message that there's nothing that we can do about it. Actually, it's not the exact explanation -- it was narrowed down to posts from Google Groups, rather than Usenet in general. At the time there was a lot of chatter on the list about people plonking posts from Google Groups. That's a solution, if that's where the spam comes from, but it penalizes the legitimate users who don't subscribe to the mailing list. Just for what it's worth. This is an ongoing problem (although it used to be much worse), and it's a shame that we're going in circles. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Text based screens without ncurses
On Thu, Nov 13, 2008 at 2:10 PM, Grant Edwards [EMAIL PROTECTED] wrote: On 2008-11-13, Mirat Can Bayrak [EMAIL PROTECTED] wrote: Hi, i'll try to write a editor in python, i want it run under terminal (no qt or gtk) but i dont want to use urwid or curses modules. Can i write my curses like module in python? Sure. If you don't want to use the ncurses library, then you could use something like slang (the Python package containing slang is called newt). Or you can use terminfo/termcap like this: http://code.activestate.com/recipes/475116/ i googled to find metods that curses uses to write characters,colors etc. on screen but it did not make sense to me. Can u help me? Probably not. any ideas? any suggestions? Well, I'd working on my spelling and typing skills and stop using SMS-speak on Usenet. I second that! This list has standards. Here are a few tips: Capitalize the word I and I'll and the like. The word you has three letters in it, not one. Use spell-check. Capitalize Google and its derivatives. In general, present yourself as someone intelligent -- not a moron. You'll get more respect, and more help. While I'm ranting, here's more general stuff that doesn't necessarily apply to this thread: Do not type anything in all caps. Make your e-mail subject meaningful. I don't bother to read anything with no subject, or help or some other useless title. If your code isn't working, post it when asking the group why it doesn't work. When your output isn't what you wanted, post sample input, actual output, and expected output. Proofread what you write! Not only will you be able to fix bad writing, but upon re-reading you may notice that you are being ambiguous, leaving out important details, or that your wording just doesn't make sense. Think about how many threads begin with a question, then 10 responses asking for clarification. If you ask properly the first time, you might just get the right answer in the first reply! ShawnMilo -- http://mail.python.org/mailman/listinfo/python-list
Re: How to eliminate quotes around string field written to a file.
On Sat, Nov 15, 2008 at 12:19 AM, Steven D'Aprano [EMAIL PROTECTED] wrote: On Fri, 14 Nov 2008 20:39:53 -0800, len wrote: hi Have this code in my program; filename = 'custfile' codeline = filename + ' = [\n' output.write(codeline) record written to file look like this custfile = [ I cannot reproduce that behaviour. I suggest that the code you are running is not the same as the code you say you are running. -- Steven Same here. I don't get quotes around it. Also, how is output defined? I got an error, so I used sys.stderr.write() instead. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to build the pysqlite? Where to find the sqlite3.h?
This is all useful and interesting stuff, but I don't think any of it addresses the original poster's problem, which is that he has no root access to a Linux or Unix box, and wants to get pysqlite2 working in his home directory. I have exactly the same problem. I have tried the python setup.py install --home=~ method, and I get errors from GCC that I have no permissions (and to be honest, nor the knowledge) to overcome. Isn't there anyway to get a Linux binary that can just be put somewhere in the Python path so we can use sqlite? Or are those of us without admin/root control of our boxes screwed? -- http://mail.python.org/mailman/listinfo/python-list
Re: Parse each line by character location
I work with tab-delimited files for a living. Because of the same need you have, I created a Python script to do this. It has usage information that is easy to follow (just run it without any arguments). I hope someone else finds this useful. I have, and use it every month. It can be easily modified to create comma-delimited files, but that's something I never use, so it does tabs. http://milochik.com/shawn/fwconvert.zip Usage: fwconvert -r rulesFile fileName [-t|-f] or cat filename | fwconvert -r rulesFile (-t|-f) -t (to tab) or -f (to fixed-width) required when piping input to script. Otherwise, it will be auto-determined. Rules file format: fieldStart:fieldLength,fieldStart:fieldLength... Example: 1:3,4:20,24:5 -- http://mail.python.org/mailman/listinfo/python-list
Re: How to build the pysqlite? Where to find the sqlite3.h?
On Wed, Nov 5, 2008 at 11:58 AM, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On Nov 5, 9:22 pm, Shawn Milochik [EMAIL PROTECTED] wrote: This is all useful and interesting stuff, but I don't think any of it addresses the original poster's problem, which is that he has no root access to a Linux or Unix box, and wants to get pysqlite2 working in his home directory. I have exactly the same problem. I have tried the python setup.py install --home=~ method, and I get errors from GCC that I have no permissions (and to be honest, nor the knowledge) to overcome. Isn't there anyway to get a Linux binary that can just be put somewhere in the Python path so we can use sqlite? Or are those of us without admin/root control of our boxes screwed? 1. Get sqlite3 from http://www.sqlite.org/sqlite-3.6.4.tar.gz 2. build and install sqlite3 (./configure --prefix=/any/writeable/dir make install) -- you may want to supply the --disable-tcl flag if you hit permission problems 3. get pysqlite3, edit setup.cfg libraries and include lines to point to the lib/ and include/ dir where you installed sqlite3 in the previous step 4. python setup.py install --home=somewhere 5. PYTHONPATH=somewhere ./python -- import pysqlite2 should work for you -- Thanks, but either I'm missing something or you're missing something. I can't do any of what you describe on the machine I want to use sqlite on. I have downloaded the binary sqlite3 file from sqlite's Web site, and I can use it with shell scripts and via the command line with no problem. The issue is that I don't seem to have any way available to me to use the pysqlite2 Python module. When I try the python setup.py --install --home=somewhere installation, it blows up on GCC errors that I do not have the permissions to even attempt to fix. What I was asking above was whether there was a way do download the pysqlite2 module as files that I can just copy into a directory that Python thinks is part of its path so I can use it without having to compile or build it in any way on that machine. Thanks, Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: How to build the pysqlite? Where to find the sqlite3.h?
Thanks, but either I'm missing something or you're missing something. I can't do any of what you describe on the machine I want to use sqlite on. I have downloaded the binary sqlite3 file from sqlite's Web site, and The linux binary will not work. You need the headers and the libraries. Grab the src tar ball and build and install locally. -srp That is not correct. The binary *does* work, as I said last time. For the third time, it is not possible for me to build from source on that box. And in any case, you keep talking about sqlite3, but I'm talking about pysqlite2. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to build the pysqlite? Where to find the sqlite3.h?
On Wed, Nov 5, 2008 at 1:55 PM, Thorsten Kampe [EMAIL PROTECTED] wrote: * Shawn Milochik (Wed, 5 Nov 2008 12:28:46 -0500) Thanks, but either I'm missing something or you're missing something. I can't do any of what you describe on the machine I want to use sqlite on. I have downloaded the binary sqlite3 file from sqlite's Web site, and The linux binary will not work. You need the headers and the libraries. Grab the src tar ball and build and install locally. That is not correct. The binary *does* work, as I said last time. For the third time, it is not possible for me to build from source on that box. Sure you can. There are never permission problems for compiling - only for installing. And in any case, you keep talking about sqlite3, but I'm talking about pysqlite2. You (and Kurda) keep on talking the wrong stuff. First: you don't need pysqlite2. SQLite support is included in the latest Python as module sqlite3. If for whatever reason you need the latest SQLite module for Python (2.5.0), you can simply grab an rpm or build it from source and install it to your home directory. To build pysqlite you need the SQLite headers. If you can't install those to default path then simply grab the headers, put them somewhere into your home directory and tell the pysqlite build process where to find them. Thorsten Okay, sorry if I haven't been specific enough. I don't know about the original poster, but on the box I'm using, I don't have the latest Python, the make command breaks because the system doesn't have the proper libraries, and there is no sqlite3 module. I am not authorized to fix any of that, and our support team isn't interested in helping me because it's a Perl shop, not Python. I'm not demanding that anyone solve my problem. I'm just asking if there are files I can download and without compiling or building them in any way, put them somewhere, point Python to that path, and be able to use sqlite from Python. If the answer is no, it's no. I'm not repeating myself because I enjoy it. For some reason everyone who has answered me has ignored the basic question of whether this is possible or not, so I have felt the need to reply and say so. Thanks, Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: How to build the pysqlite? Where to find the sqlite3.h?
On Wed, Nov 5, 2008 at 8:52 PM, Kurda Yon [EMAIL PROTECTED] wrote:
By the where can I find a simle tutorial about the work with the
sqlite from the Python?
--
http://mail.python.org/mailman/listinfo/python-list
Once you get the connection, you can pretty much just do whatever if
you know SQL. Here's some working code from one of my little projects:
#!/usr/bin/env python
from pysqlite2 import dbapi2 as sqlite
import time
#import sys
sqliteDatabase = status.db
connection = sqlite.connect(sqliteDatabase)
cursor = connection.cursor()
cursor.execute('CREATE TABLE IF NOT EXISTS auctions (auction_id
INTEGER PRIMARY KEY, numBids INTEGER, currentPrice INTEGER, timestamp
TEXT(50), itemTitle TEXT(100))')
connection.close()
local = time.localtime()
timeStamp = %s-%02d-%02d_%02d:%02d % (local[0], local[1], local[2],
local[3], local[4])
def recordExists(auctionID):
connection = sqlite.connect(sqliteDatabase)
cursor = connection.cursor()
cursor.execute('SELECT COUNT(auction_id) FROM auctions WHERE
auction_ID = ' + auctionID.__str__())
for row in cursor:
return row[0]
cursor.close()
connection.close()
def retrieveAuctionInfo(auctionID):
connection = sqlite.connect(sqliteDatabase)
cursor = connection.cursor()
cursor.execute('SELECT currentPrice, numBidsFROM auctions
WHERE auction_ID = ' + auctionID.__str__())
for row in cursor:
return [row[0],row[1]]
cursor.close()
def insertAuction(auctionID, currentPrice, currentBids, itemTitle):
itemTitle = itemTitle.replace('', '')
connection = sqlite.connect(sqliteDatabase)
cursor = connection.cursor()
insertQuery = 'INSERT INTO auctions (auction_id, currentPrice,
numBids, timestamp, itemTitle) VALUES (%s, %s, %s, %s, %s)' %
(auctionID, currentPrice, currentBids, timeStamp, itemTitle)
cursor.execute(insertQuery)
connection.commit()
cursor.close()
connection.close()
def updateAuction(auctionID, currentPrice, currentBids):
connection = sqlite.connect(sqliteDatabase)
cursor = connection.cursor()
updateQuery = 'UPDATE auctions SET currentPrice = %s, numBids =
%s, timestamp = %s WHERE auction_id = %s;' % (currentPrice,
currentBids, timeStamp,auctionID)
cursor.execute(updateQuery)
connection.commit()
cursor.close()
connection.close()
def getTotalAmount():
connection = sqlite.connect(sqliteDatabase)
cursor = connection.cursor()
selectQuery = SELECT SUM(currentPrice) FROM auctions WHERE numBids 0;
cursor.execute(selectQuery)
for row in cursor:
return float(row[0])
cursor.close()
connection.close()
def displayAuctions(sortBy=timestamp DESC):
connection = sqlite.connect(sqliteDatabase)
cursor = connection.cursor()
selectQuery = SELECT auction_id, numBids, currentPrice,
timestamp, itemTitle FROM auctions WHERE numBids 0 ORDER BY +
sortBy + ;
cursor.execute(selectQuery)
for row in cursor:
auctionID, numBids, currentPrice, timestamp, itemTitle = row
print %25s $%6.2f (%2s bids) Last update: %16s %
(itemTitle[:25], currentPrice, numBids, timestamp)
cursor.close()
print
connection.close()
if __name__ == __main__:
displayAuctions(currentPrice DESC)
displayAuctions()
#displayAuctions(numBids DESC)
print $%3.2f % getTotalAmount()
--
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Re: How to protect website from access without authentication?
This isn't really a Python question -- it's a Web development question. The easy answer is to just password protect the directory all the pages are stored in, and require a password. This can be set up using Apache or IIS. If what you really meant to ask was how to prevent anyone from accessing certain functionality, then you should look into using sessions, and write the pages you're worried about to require an authenticated session. This is better than the solution above for several reasons: You can grant different levels of permission to different users, you can revoke permission from some users while allowing it for others, and you can allow your users to each have their own password. Plus, you'll be able to log which user did what. If this wasn't helpful, please be much more specific in restating your question. Shawn On Mon, Nov 3, 2008 at 8:30 AM, Good Z [EMAIL PROTECTED] wrote: Dear All, We are developing a website and would like to password protect the whole site. If any user visit our site using ip address or using the http link, he/she will be asked for login password and then granted the access to whole site based on the correct password. Help will be appreciated. Thank Regards, Mike -- http://mail.python.org/mailman/listinfo/python-list -- http://i203.photobucket.com/albums/aa74/harrowlawl/sciencevsreligion.jpg -- http://mail.python.org/mailman/listinfo/python-list
Re: PYTHON WORKING WITH PERL ??
On Sat, Nov 1, 2008 at 11:15 AM, Nicola Larosa (tekNico) [EMAIL PROTECTED] wrote: Pat [EMAIL PROTECTED] wrote: After you learn Python, you'll come to despise Perl. Some of us came to despise Perl *before* learning Python (third to last paragraph): For what it's worth, I thought I'd throw in my 2¢. I used to like Perl a whole lot. I was never a Perl Monk, or a guru of any kind. But Perl is powerful and convenient. In fact, I still use Perl one-liners all the time. For any quickie one-liner, especially involving regular expressions, it's unparalleled as far as I know. But once I started using Python, I immediately preferred it to Perl. Now, I'm useless in Perl. To even write a simple script, I end up having to hit up Google for the syntax. Things don't make sense, and it's awkward for me to put my thoughts down in Perl code. Python, on the other hand, almost always does what I was thinking of when I wrote it. Don't get me wrong -- I still write bad code. But most of the issues are bugs with the logic, when I don't do enough thinking before typing (which Python makes so easy). I rarely struggle with any syntax issues at all. The reason I think Python blows Perl away is that it makes it much easier to read code after a period of time. Even if it's not your code. With Perl, it's too easy to write code that you have to decipher even after your lunch break. For more thoughts on these things from someone much, much more qualified than I, check out this fantastic article: http://www.linuxjournal.com/article/3882 -- http://mail.python.org/mailman/listinfo/python-list
Re: Windows DOS box redirection
On Fri, Oct 31, 2008 at 2:14 PM, Bill McClain [EMAIL PROTECTED] wrote: On 2008-10-31, Stef Mientki [EMAIL PROTECTED] wrote: Well I don't know any Windows users that still use DOS-boxes ;-) cheers, What do they do when they want to run a cross-platform command-line script with parameters and redirection? I suppose they could install cygwin and run bash, but that seems like overkill for what should be a simple task. Easy. Make a desktop shortcut which includes the parameters, etc. People do that all the time, including for GUI apps such as Internet Explorer which have some optional command-line shortcuts. The only thing you have to do is make sure that the Windows machine associates files with the .py extensions with the Python interpreter. The easiest way is to right-click a .py file, select Choose an Application, select the Python runtime, and check the box for always use this program. -- http://mail.python.org/mailman/listinfo/python-list
Re: Exact match with regular expression
On Fri, Oct 31, 2008 at 8:57 PM, Lawrence D'Oliveiro [EMAIL PROTECTED] wrote: In message [EMAIL PROTECTED], Rob Williscroft wrote: Read (and bookmark) this: http://www.python.org/doc/2.5.2/lib/re-syntax.html Funny how you never get a thank-you when you tell people to RTFM. -- http://mail.python.org/mailman/listinfo/python-list Hmmm. Kind of odd. Someone involved in the language they're having trouble with wrote some documentation for the exact thing they're asking for, you tell them where it is, and that doesn't deserve thanks? Something's wrong here. Well, it's about time for that which must be read by everyone on the Internet to be mentioned again. If you haven't read this yet, read this: http://www.catb.org/~esr/faqs/smart-questions.html Especially if you have asked for help and not gotten what you wanted. Especially if people ignore your questions. Especially if people give answers that don't help you. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python does not get environment variable when using cron.
Here's a more English version of what people are trying to explain: When you log into a Unix session, certain files in your home directory are read and add environment variables to your session. When you run a cron job, it does not do this. It still runs as you as far as permissions go, but it is not identical to you typing the command in an interactive session. The easiest solution (in my opinion) is to write a bash script to execute your Python script, and use that bash script to add those environment variables. The most likely file you'll want to run is .bashrc in your home directory. If you're on a Mac, it's .bash_login instead. Example: #/usr/bin/env bash source ~/.bashrc path/my_script.py Something like that should take care of it. If not, get creative -- add the env command to your bash script and have it send the output to a file: env cron_env.txt Then run env in your interactive session and look for differences. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Testing for the first few letters of a string
Check out the built-in string.startswith() method. -- http://mail.python.org/mailman/listinfo/python-list
Re: Monitor and compare two log files in real time
Can you be more specific? That will also help you write your requirements, which will lead to your pseudo code and then your code. Do you want to search for a a pre-defined string (or set of strings), or just look for anything matching a pattern to appear in the first file? Related question: Can that string appear anywhere in the second file, or does it have to appear in a certain pattern (at the beginning of a line, followed by a colon or the word error or something? Do the log entries have timestamps, or will you be capturing the time your script found the string in file 1? What will you do if the script must be restarted and forgets what it found in the past eight minutes? If you're feeling ambitious, write some code. Figure out how to: 1. Read a file. 2. Locate the value(s) you are looking for and retain them somehow. Once you can do those two things, you can easily read the second file and seek the values you already found. A few lines to handle the eight-minute rule, and you're almost done. Post back when you have some code written. ShawnMilo -- http://mail.python.org/mailman/listinfo/python-list
Re: Parsing of a file
I would like to parse this file by extracting the field id, ra, dec and mjd for each line. It is not, however, certain that the width of each value of the field id, ra, dec or mjd is the same in each line. Is there a way to do this such that even if there was a line Regular expressions will do the trick nicely. where Ra=** and MJD= was swapped it would be parsed correctly? Yes, but you'll probably have to look at each line three times or split it into a list and check the elements. Cheers Tommy -- http://mail.python.org/mailman/listinfo/python-list ShawnMilo -- http://mail.python.org/mailman/listinfo/python-list
Re: Finally had to plonk google gorups.
How does one plonk stuff from Google Groups? Specifically, how can this be done in Gmail? Thanks, Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Issue with regular expressions
My stab at it:
My stab at it:
#!/usr/bin/env python
import re
query = ' some words with and withoutquotes '
query = re.sub(\s+, , query)
words = []
while query.__len__():
query = query.strip()
print(Current query value: '%s' % query)
print words
print
if query[0] == '':
secondQuote = query[1:].index('') + 2
words.append(query[0:secondQuote].replace('', '').strip())
query = query[secondQuote:]
else:
if query.count( ) == 0 :
words.append(query)
query =
else:
space = query.index( )
words.append(query[0:space])
query = query[space:]
print words
print query
--
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Checking for unique fields: performance.
I'm looping through a tab-delimited file to gather statistics on fill rates, lengths, and uniqueness. For the uniqueness, I made a dictionary with keys which correspond to the field names. The values were originally lists, where I would store values found in that field. Once I detected a duplicate, I deleted the entire element from the dictionary. Any which remained by the end are considered unique. Also, if the value was empty, the dictionary element was deleted and that field considered not unique. A friend of mine suggested changing that dictionary of lists into a dictionary of dictionaries, for performance reasons. As it turns out, the speed increase was ridiculous -- a file which took 42 minutes to run dropped down to six seconds. Here is the excerpt of the bit of code which checks for uniqueness. It's fully functional, so I'm just looking for any suggestions for improving it or any comments. Note that fieldNames is a list containing all column headers. #check for unique values #if we are still tracking that field (we haven't yet #found a duplicate value). if fieldUnique.has_key(fieldNames[index]): #if the current value is a duplicate if fieldUnique[fieldNames[index]].has_key(value): #sys.stderr.write(Field %s is not unique. Found a duplicate value after checking %d values.\n % (fieldNames[index], lineNum)) #drop the whole hash element fieldUnique.__delitem__(fieldNames[index]) else: #add the new value to the list fieldUnique[fieldNames[index]][value] = 1 -- http://mail.python.org/mailman/listinfo/python-list
Re: Python for mobiles
A better solution would surely be to get a Nokia S60 'phone, for which there is a native Python implementation. regards Steve -- Steve Holden+1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ Steve: Do you know if the Nokia E60i phone has this capability? Also, is wxPython supported? Or are you just knowledgeable about the S60? Thanks, Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: sudoku solver in Python ...
On Jan 23, 2008, at 10:02 PM, Derek Marshall wrote: This is just for fun, in case someone would be interested and because I haven't had the pleasure of posting anything here in many years ... http://derek.marshall.googlepages.com/pythonsudokusolver Appreciate any feedback anyone who takes the time to have a look would want to give ... Yours with-too-much-time-to-kill-on-the-train'ly, Derek -- http://mail.python.org/mailman/listinfo/python-list For those interested in this topic, here's another (much shorter) one: http://norvig.com/sudoku.html I'm not making any judgements here, though. If anyone takes the time to actually review them, I'd be interested in hearing any educated comparisons. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: What is python?????
However, the python is not poisonous, so it is also edible if you can kill one before it squeezes you to death. Despite this fact, it is not a major food source for group members, due to our great respect for the mighty python. Shawn On Nov 16, 2007 9:14 AM, Thorsten Kampe [EMAIL PROTECTED] wrote: * Cope (Fri, 16 Nov 2007 06:09:31 -0800 (PST)) please tell me what is python.This group is so crowded. A Python is dangerous snake[1]. This group here mainly consists of misguided snake worshippers. You'd better run before they come to your place... Thorsten [1] http://en.wikipedia.org/wiki/Pythonidae -- http://mail.python.org/mailman/listinfo/python-list -- Please read: http://milocast.com/2007/07/31/this-i-believe/ A good reason not to say I don't know -- what do you want to do? http://xkcd.org/330/ -- http://mail.python.org/mailman/listinfo/python-list
Re: What is python?????
On Nov 16, 2007 2:16 PM, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On Nov 16, 8:14 am, Thorsten Kampe [EMAIL PROTECTED] wrote: * Cope (Fri, 16 Nov 2007 06:09:31 -0800 (PST)) please tell me what is python.This group is so crowded. A Python is dangerous snake[1]. This group here mainly consists of misguided snake worshippers. You'd better run before they come to your place... Thorsten [1]http://en.wikipedia.org/wiki/Pythonidae Don't listen to him, he was joking. Python is short for Monty Python's Flying Circus, a British television comedy originally from 1969-1971 (although movies, records, books and Broadway shows continue to the present). Read the documention, you'll see numerous references to spam (used in one of their famous routines) and other Pythonisms. Anyway, all the posting in this group is comedy. If you aren't getting it, run out and buy and study all the DVD's. When you've reached the point where you have The Argument Clinic dialogue memorized, come back here and all this will make sense. Just be careful, some of the Python routines aren't SUPPOSED to make sense (cabbage crates over the how's your father), that's the joke. -- http://mail.python.org/mailman/listinfo/python-list Actually, this answer is the true one, and should be considered authoritative. Thanks, mensanator. P.S. Another Python is a programming language invented by Guido van Rossum, which he named after Monty Python. You can see a lot about that at python.org. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python beginner!
I completely support Wildemar. Lazy questions like that deserve absolutely nothing. I agree that cushioning the reply with a brief explanation of why that question sucks would have helped the original poster, but he doesn't deserve any effort from any of us until he has shown evidence of his own efforts. Then he will find a lot of friendly help. -- http://mail.python.org/mailman/listinfo/python-list
Re: New
On 10/28/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hi! Am new to Python and am looking for a sample project that demonstrates how to connect to MySQL, save data in MySQL database using a form on a web page. Regards, Joseph -- http://mail.python.org/mailman/listinfo/python-list 1. Read this: http://catb.org/~esr/faqs/smart-questions.html 2. You can easily find what you're asking for on Google. -- http://mail.python.org/mailman/listinfo/python-list
Re: Regular Expression
On 10/22/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
Hi,
I'm trying to learn regular expressions, but I am having trouble with
this. I want to search a document that has mixed data; however, the
last line of every entry has something like C5H4N4O3 or CH5N3.ClH.
All of the letters are upper case and there will always be numbers and
possibly one .
However below only gave me none.
import os, codecs, re
text = 'C:\\text_samples\\sample.txt'
text = codecs.open(text,'r','utf-8')
test = re.compile('\u+\d+\.')
for line in text:
print test.search(line)
--
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I need a little more info. How can you know whether you're matching
the text you're going for, and not other data which looks similar? Do
you have a specific field length? Is it guaranteed to contain a digit?
Is it required to start with a letter? Does it always start with 'C'?
You need to have those kinds of rules in mind to write your regex.
Shawn
--
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Re: [Tutor] matching a street address with regular expressions
On 10/4/07, Ricardo Aráoz [EMAIL PROTECTED] wrote:
Christopher Spears wrote:
One of the exercises in Core Python Programming is to
create a regular expression that will match a street
address. Here is one of my attempts.
street = 1180 Bordeaux Drive
patt = \d+ \w+
import re
m = re.match(patt, street)
if m is not None: m.group()
...
'1180 Bordeaux'
Obviously, I can just create a pattern \d+ \w+ \w+.
However, the pattern would be useless if I had a
street name like 3120 De la Cruz Boulevard. Any
hints?
Also, that pattern can be easily modified to have any number of words
at the end:
patt = \d+ (\w+){1,}
This would take care of 3120 De la Cruz Boulevard.
--
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Re: [Tutor] data from excel spreadsheet to csv and manipulate
On 10/3/07, sacha rook [EMAIL PROTECTED] wrote: Hi can anyone help with the best way to tackle this? I have a spreadsheet ms excel, that has a name column that I want to extract to csv and manipulate as follows. The name column has data in this format Name Surname Firstname after extracting and manipulating I want it to be as follows in three comma separated fields; Firstname, Surname, Firstname Surname So Smith John becomes John, Smith, John Smith I hope I have explained myself. I want to use python to do all this if sensible, so what is the best approach? Many thanks S Do you know a place like the back of your hand? Share local knowledge with BackOfMyHand.com ___ Tutor maillist - [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/tutor Here's the best approach: 1. Browse: http://python.org/doc/ 2. Search Google. 3. Write code. 4. Post code to the group and ask for help with the pieces that aren't working as you expect. Have fun! Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Algebraic Modules For Python
On 10/1/07, Brandon McGinty [EMAIL PROTECTED] wrote: Hi All, I know that there is probably a great deal of literature on this on the net, but I don't have any time to go searching. snip -- Brandon McGinty McGinty Soft Ltd. Website design, configuration, and maintenance Python and PHP coder snip So let me get this straight: You label yourself as a coder for hire in Python, but you don't have time to search the Internet for an answer to your own Python question? Remind me to avoid McGinty Soft for any and all needs which might require someone useful. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] Take if offline
Since everyone else is replying to the list, I'll (top) post this: No, not really. He had to give everyone the rule once. Otherwise, he'd have to do it a hundred times a day, and monitor every single post to find out who he had to inform. He'd end up doing not much else with his life, and would flee to a monastery and give up coding forever. You wouldn't want that to happen, would you? On 9/25/07, Michael Langford [EMAIL PROTECTED] wrote: I agree with Kent... -- Michael Langford Phone: 404-386-0495 Consulting: http://www.TierOneDesign.com/ Entertaining: http://www.ThisIsYourCruiseDirectorSpeaking.com On 9/25/07, Kent Johnson [EMAIL PROTECTED] wrote: Hansen, Mike wrote: Anytime someone posts in HTML, or posts without a subject, or accidentally hijacks a thread, or top-posts, or writes in caps, a couple of posters pop up and complain. Rather than posting to the entire list, I think it'd be best if you send your complaint directly to the offending user. I'd prefer to read about Python not read lessons in net/mail-list etiquette. Hmmm. So instead, whenever someone complains about netiquette on-list we should post on-list complaining about it? I'm not sure that improves the situation any, especially if it sparks a discussion. Perhaps you should email your suggestion privately to the offending parties. :-) I definitely think this list is about how to be part of the Python community, as well as how to program in Python. Knowing how to participate in a mailing list is part of that. Maybe you could just skip those posts, there are not that many of them. Kent ___ Tutor maillist - [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/tutor -- Please read: http://milocast.com/2007/07/31/this-i-believe/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Finding prime numbers
On 9/20/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On Sep 19, 1:31 pm, Shawn Milochik [EMAIL PROTECTED] wrote: If you'd just search the archives, you would have found this: http://groups.google.com/group/comp.lang.python/browse_thread/thread/... Yeah, but that's no fun. ;o) Yes! Never do what you can fool others into doing for you. Mike Maybe for some people, but for me it's more fun to figure it out on my own. By the no fun part, I meant that it wouldn't be fun to just find the answer in an old thread instead of writing code to find primes myself. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] Finding prime numbers
Here's my attempt: #!/usr/bin/env python import math for x in range(3,1000,2): isPrime = True for y in range(3,(math.sqrt(x) + 1)): if x % y == 0: isPrime = False break if isPrime: print %d is prime. % x Notes: This doesn't bother with even numbers at all, and uses the square root function of math. Any improvements anyone? -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] Finding prime numbers
Okay, I caught one bug already myself: for y in range(3,(math.sqrt(x) + 1)): should be for y in range(3,(int(math.sqrt(x)) + 1)): -- http://mail.python.org/mailman/listinfo/python-list
Re: Finding prime numbers
If you'd just search the archives, you would have found this: http://groups.google.com/group/comp.lang.python/browse_thread/thread/b134b2235e9c19a6/34857fb0b0b2a4b5?lnk=gstq=prime+numberrnum=1#34857fb0b0b2a4b5 Yeah, but that's no fun. ;o) -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie question
On 9/18/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On Sep 18, 1:31 pm, Shawn Milochik [EMAIL PROTECTED] wrote: On 9/18/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: If I have a file name: AVC1030708.14. How do I strip out certain characters from the file name? I am so used to using MID, LEFT, and RIGHT functions, that I have no idea how to do this in python? I have had trouble as well with most newbies on finding the help. But I have used the command line built in help, but with no luck. Thanks. Kou Do you want to strip out specific characters, characters in specific positions, or characters matching certain patterns? Yes, I want specific characters in specific positions. Try this: newString = oldString[0:3] + oldString[5:10] Some other quick examples: test = this is a test test 'this is a test' fred = test[:3] + test[9:] fred 'thi test' test[0:5] 'this ' test[:5] 'this ' test[4:] ' is a test' -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie question
On 9/18/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: If I have a file name: AVC1030708.14. How do I strip out certain characters from the file name? I am so used to using MID, LEFT, and RIGHT functions, that I have no idea how to do this in python? I have had trouble as well with most newbies on finding the help. But I have used the command line built in help, but with no luck. Thanks. Kou Do you want to strip out specific characters, characters in specific positions, or characters matching certain patterns? -- http://mail.python.org/mailman/listinfo/python-list
Re: pattern combinations
On 9/17/07, dorje tarap [EMAIL PROTECTED] wrote: Hi all, Given some patterns such as ...t...s. I need to make all possible combinations given a separate list for each position. The length of the pattern is fixed to 9, so thankfully that reduces a bit of the complexity. For example I have the following: pos1 = ['a',' t'] pos2 = ['r', 's'] pos3 = ['n', 'f'] So if the pattern contains a '.' character at position 1 it could be 'a' or 't'. For the pattern '.s.' (length of 3 as example) all combinations would be: asn asf tsn tsf Thanks -- http://mail.python.org/mailman/listinfo/python-list Sounds like homework to me. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to Start
On 9/14/07, James Stroud [EMAIL PROTECTED] wrote: Here's your recipe: 1. begin coding until you hit a wall 2. read official tutorial until you figure out a solution 3. experiment in interactive interpreter 4. goto 1. I know this sounds obvious, but its the best way to jumpstart. James -- What a beautiful way of putting it! That's what I do all the time, although sometimes my bookshelf or Google is a stand-in for #2. I try not to post to the list before I have working code. You know, if you could make that process into a haiku, you could just make that your sig and answer nearly every question that hits this list. ^_^ I wonder whether lists like this hurt more people than they help, because it's too easy to ask for help too soon. Those of you who consistently give the best advice didn't learn by asking for help every step along the way, did you? Is it really teaching a man to fish if you bait his line and tell him where to cast? Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] Just bought Python in a Nutshell
My best advice: Skim it -- just flip the pages, glancing at each one without really reading it -- maybe just read the bold type. You'll find that very rewarding when you run into a problem in your coding and remember that you saw *something* which could be related. You will probably notice some built-in functions that you will need and possibly would have re-invented if you didn't know they were there. I don't really find it to be a reading book -- it's more of a reference book. Flip through it, then keep it within reach of your keyboard. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] list iteration question for writing to a file on disk
When you use print, it automatically adds a newline (\n). You can avoid this by following the print line with a comma: print j, Or rstrip() the line before printing. Either way. -- http://mail.python.org/mailman/listinfo/python-list
Re: Difference between two times (working ugly code, needs polish)
Just to be picky - your function returns the number of days between two dates, but it's called isOld, which looks like it should return a boolean. i.e. it looks like it would be used as: if not isOld(auctionDate, currentTime): checkForBid() rather than how I assume it is used: if isOld(auctionDate, currentTime) = 10: checkForBid() I'd call it daysDiff or something similar, or make it more specific so that it works like the first block of code above: You're absolutely right; I started writing it with one purpose in mind and changed it midstream. I actually renamed it yesterday to dayDiff. ;o) Shawn -- http://mail.python.org/mailman/listinfo/python-list
Difference between two times (working ugly code, needs polish)
I have done what I wanted, but I think there must be a much better way.
Given two timestamps in the following format, I just want to figure
out how far apart they are (in days, seconds, whatever).
Format:
-MM-DD_MM:SS
Example:
2007-09-11_16:41
It seems to me that to do what I want, I need to convert a string into
a number (time.mktime()), such as this: 1189543487.0
Once I have that, I can just subtract one from the other and do
whatever I want. The ugly part is converting something like
2007-09-11_16:41 to the numeric equivalent.
Below is my code. Any suggestions?
Thanks in advance.
Here is what I have (works):
#runTimeStamp is the current time, set when the script begins execution
def recAge(lastUpdate, runTimeStamp):
import re
oneDay = 60 * 60 * 24
lastUpdate = re.sub(r'\D+', ',', lastUpdate)
lastUpdate = lastUpdate + ,0,0,0,0
lastUpdate = [int(x) for x in lastUpdate.split(',')]
lastUpdate = time.mktime(tuple(lastUpdate))
runTimeStamp = re.sub(r'\D+', ',', runTimeStamp)
runTimeStamp = runTimeStamp + ,0,0,0,0
runTimeStamp = [int(x) for x in runTimeStamp.split(',')]
runTimeStamp = time.mktime(tuple(runTimeStamp))
return (runTimeStamp - lastUpdate) / oneDay
--
http://mail.python.org/mailman/listinfo/python-list
Re: Difference between two times (working ugly code, needs polish)
On 9/11/07, Grant Edwards [EMAIL PROTECTED] wrote: On 2007-09-11, Shawn Milochik [EMAIL PROTECTED] wrote: I have done what I wanted, but I think there must be a much better way. See the strptime() function in either the time or the datetime modules: http://docs.python.org/lib/module-time.html http://docs.python.org/lib/module-datetime.html Grant: Thanks, this works, and is much shorter. Any further improvements, anyone? def isOld(lastUpdate, runTimeStamp): oneDay = 60 * 60 * 24 lastUpdate = time.mktime(time.strptime(lastUpdate, %Y-%m-%d_%H:%M)) runTimeStamp = time.mktime(time.strptime(runTimeStamp, %Y-%m-%d_%H:%M)) return (runTimeStamp - lastUpdate) / oneDay -- http://mail.python.org/mailman/listinfo/python-list
Re: Difference between two times (working ugly code, needs polish)
I suppose really oneDay should be a global (i.e. outside the function definition). Apart from that it would be hard to improve on: obvious, easy to read, in short - pythonic. Are you concerned about daylight savings? That could certainly introduce a whole new level of complexity into the problem. Let's hope not ... I'm not concerned with DST; this is a script which checks my Ebay auctions (I have some things for sale), and sends me e-mail whenever someone bids. It's run by cron every half hour -- it keeps me from compulsively checking my auctions. ^_^ In any case, DST isn't an issue because the same machine generates both timestamps, and all I use it for is to stop displaying auctions after they are 10 days old, so I don't get all my old crap filling up the alert e-mail or skewing the total dollar amount for all active auctions. Thanks. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Python and Cron
Could you send the output of crontab -l and the script you're running? It's probably an environment issue of some kind, but it's hard to say what blindly. -- http://mail.python.org/mailman/listinfo/python-list
Re: why should I learn python
I wholeheartedly second the recommendation of this article: http://www.linuxjournal.com/article/3882 -- http://mail.python.org/mailman/listinfo/python-list
Re: Python and Cron
Any chance your import statements aren't coming in properly due to something in your environment in Python that's not being inherited by your cron job? -- http://mail.python.org/mailman/listinfo/python-list
Re: Text processing and file creation
Here's my solution, for what it's worth: #!/usr/bin/env python import os input = open(test.txt, r) counter = 0 fileNum = 0 fileName = def newFileName(): global fileNum, fileName while os.path.exists(fileName) or fileName == : fileNum += 1 x = %0.5d % fileNum fileName = %s.tmp % x return fileName for line in input: if (fileName == ) or (counter == 5): if fileName: output.close() fileName = newFileName() counter = 0 output = open(fileName, w) output.write(line) counter += 1 output.close() -- http://mail.python.org/mailman/listinfo/python-list
PythonAlley.com
I bought the domain PythonAlley.com (and PerlAlley.com and RubyAlley.com) not too long ago. I had the inspiration to make some kind of community site thing, but never did get around to it. Does anyone have any ideas as to what a wonderful use for PythonAlley.com would be? I'd really like to do something with at least the Python site, since I love Python. Not too sure about the others -- maybe I'm make them wikis and open them up to the community. Maybe I should just sell them. Ideas? Thanks, Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: PythonAlley.com
On 9/5/07, O.R.Senthil Kumaran [EMAIL PROTECTED] wrote: * Shawn Milochik [EMAIL PROTECTED] [2007-09-05 10:27:08]: I bought the domain PythonAlley.com (and PerlAlley.com and Does anyone have any ideas as to what a wonderful use for PythonAlley.com would be? I'd really like to do something with at If you don't have an idea, most likely others wont have as well. :) -- O.R.Senthil Kumaran http://uthcode.sarovar.org Faulty logic. Otherwise, you would have to agree that you don't know what you want for lunch if I don't know. -- http://mail.python.org/mailman/listinfo/python-list
Re: REGULAR EXPRESSION
Hi.. Thanks alot for finding time to help a beginner like me. What I am trying to do is validate the input i get. I just want to take numbers and numbers only. So if the input is 23+1 or 2/3 or 9-0 or 7/0 , I want to find it using reg exp. I know there are other ways to do this... but i thought i will try this as i need to learn reg exp. I tried \D+ , \W+, and \D+|\W+ .. Thanks once again... -- Send a couple of strings and the output you would like from each. -- http://mail.python.org/mailman/listinfo/python-list
Re: Text processing and file creation
On 9/5/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: I have a text source file of about 20.000 lines. From this file, I like to write the first 5 lines to a new file. Close that file, grab the next 5 lines write these to a new file... grabbing 5 lines and creating new files until processing of all 20.000 lines is done. Is there an efficient way to do this in Python? In advance, thanks for your help. I have written a working test of this. Here's the basic setup: open the input file function newFileName: generate a filename (starting with 1.tmp). If filename exists, increment and test again (0002.tmp and so on). return fileName read a line until input file is empty: test to see whether I have written five lines. If so, get a new file name, close file, and open new file write line to file close output file final time Once you get some code running, feel free to post it and we'll help. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] Code reading for learning Python
I second the Python Cookbook recommendation. -- http://mail.python.org/mailman/listinfo/python-list
Re: Asking all python programmers.
On 8/27/07, Lamonte Harris [EMAIL PROTECTED] wrote: Okay, I know you've guys told me millions of times to read the manual I've read a lot of it. What do you recommend studying the most? Python is my goal for the next year in the half. :) -- http://mail.python.org/mailman/listinfo/python-list Some notes on your question: You've guys is nonsensical. Your first sentence is a run-on sentence. Your e-mail address identifies you as an immature script-kiddie. Year in the half is nonsensical. Okay, so why am I picking on you? Because I want to help. Present yourself in this way, and you're not going to get as much help from intelligent people as you would if they saw you were worth their time. You are either going to get angry at me or you're going to think about this. If you're angry then I can't help you. If you actually care how people see you, you will get further in life in general. To answer the question I think you were trying to ask, a combination of The Python Cookbook and Dive Into Python should get you started in doing amazing things with Python. The latter is available for free online. Take some pride in the way you write. It will pay off. Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: I Need help from all the group participants
Please enter John's heart rate. Please notify me immediately if John's heart rate drops below 60 or exceeds 100. -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbee Question
#!/usr/bin/env python normalPay = 0.4 overPay = 1.4 normalLimit = 22 def calcPay(numStops): pay = 0 if numStops normalLimit: pay = overPay * (numStops - normalLimit) numStops = normalLimit return pay + (numStops * normalPay) if __name__ == __main__: print Pay for 1 stops: %.2f. % calcPay(1) print Pay for 10 stops: %.2f. % calcPay(10) print Pay for 17 stops: %.2f. % calcPay(17) print Pay for 25 stops: %.2f. % calcPay(25) print Pay for 30 stops: %.2f. % calcPay(30) print Pay for 31 stops: %.2f. % calcPay(31) -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbee Question
On 8/20/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On Aug 20, 9:23 am, HD1956 [EMAIL PROTECTED] wrote: This is probably a simple code. I am a truck driver who gets paid by stops and cases. I am trying to figure out how to code my stop pay. I get 40 cents per stop up to 22 stops, and $1.40 per stops after that. def calc(num): if num 23: return 0.4 * num else: overtime = num - 22 x = 0.4 * 22 x += overtime * 1.4 return x # Use your own brain next time Mike -- http://mail.python.org/mailman/listinfo/python-list Mike, I wonder if we were both just duped into helping someone with their homework... Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbee Question
I like to write code, so it's not a big deal when it's something so simple. Still, that is beyond dumb! Nice code, by the way. Mike Yeah, it was fun to write anyway. Thanks for the compliment on the code. I still consider myself a Python newbie, so it's good to know I'm not trying to write it like Perl or VBScript anymore. ^_^ Shawn -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expression dictionary search
#!/usr/bin/env python
import re
patterns = { 'sho.' : 6, '.ilk' : 8, '.an.' : 78 }
def returnCode(aWord):
for k in patterns:
p = ^%s$ % k
regex = re.compile(p)
if re.match(regex, aWord):
return patterns[k]
if __name__ == __main__:
print The return for 'fred' : %s % returnCode('fred')
print The return for 'silk' : %s % returnCode('silk')
print The return for 'silky' : %s % returnCode('silky')
print The return for 'hand' : %s % returnCode('hand')
print The return for 'strand' : %s % returnCode('strand')
print The return for 'bank' : %s % returnCode('bank')
Note: If a word matches more than one pattern, only one will be returned.
I'm not sure if I'm doing the patterns thing properly -- if anyone
could instruct me on whether it would be proper to declare it in the
function, or use a global declaration, please let me know. However, it
runs properly as far as I tested it.
Shawn
--
http://mail.python.org/mailman/listinfo/python-list
Re: question
snip And Shawn, I didn't post any of my work because the network I work on isn't connected to the internet. So it didn't seem constructive to re-type all of my failed code just to satisfy your standards of proving that I've been trying to hack this myself for the past few days. All in all, thanks for your, u, constructive comments. -- http://mail.python.org/mailman/listinfo/python-list Your original post said clearly that you didn't post your code because it didn't work. That's a completely different reason/excuse than no Internet connection so I didn't want to re-type it. So either you're lying or lazy, and in either case I don't appreciate your snarky comments about my uhhh constructive comments. Don't get me wrong -- I'm not saying you're definitely being dishonest, but you have to admit that the appearance you gave is questionable, and questionable behavior on lists like this gets questioned. Just so this isn't interpreted badly and doesn't start a flame-war, I will just give up and say that if there was a misunderstanding it was on my end, and I apologize. I just wanted to respond to your passive-aggressive attack, since I'm a friendly, helpful person and don't want to be unfairly labled as uhhh constructive. -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expression dictionary search
On 8/20/07, Paul McGuire [EMAIL PROTECTED] wrote:
On Aug 20, 10:35 am, Shawn Milochik [EMAIL PROTECTED] wrote:
#!/usr/bin/env python
snip
if __name__ == __main__:
print The return for 'fred' : %s % returnCode('fred')
print The return for 'silk' : %s % returnCode('silk')
print The return for 'silky' : %s % returnCode('silky')
print The return for 'hand' : %s % returnCode('hand')
print The return for 'strand' : %s % returnCode('strand')
print The return for 'bank' : %s % returnCode('bank')
Shawn -
All that copy/pasting has got to have carpal tunnel written all over
it - DRY!
tests = fred silk silky hand strand bank.split()
for test in tests:
print The return for '%s' : %s % (test, returnCode(test))
-- Paul
--
http://mail.python.org/mailman/listinfo/python-list
You're right. Thanks for the correction. My wrists are shot as it is,
and it's easy enough in vim to copy paste. You know how it is -- I
made one test line, then copied it to a second, then copied it to a
third... Guilty of not planning ahead. ;o)
--
http://mail.python.org/mailman/listinfo/python-list
Re: I Need help from all the group participants
On 8/20/07, Boris Ozegovic [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: The only sentence that comes to mind is: I hope I never find myself in a hospital that uses your system. You are not funny. The system isn't for hospitals, it is for university purposes. -- Ne dajte da nas lažljivac Bandić truje: http://cnn.blog.hr/arhiva-2007-06.html#1622776372 -- http://mail.python.org/mailman/listinfo/python-list I disagree. He is funny. Sorry you can't appreciate the humor -- it must be the language barrier. Lighten up and enjoy this life -- it's the only one we have. -- http://mail.python.org/mailman/listinfo/python-list
