🌐 Mailman 3 September 2007 - Python-list - python.org

Delete spaces
by koutoo＠hotmail.com Sept. 30, 2007

Sept. 30, 2007

If I have a text file that is delimited by spaces, how do I import it and get to comma delimited? Here is a row of data from the text file: 1 1 10:55:14 2 65 8.5 1.4+1.1 2.5 Class-2 0 I tried a few examples from the group and it didn't work, since the file also has a header row and a row of seperators ( -------). The lengths of each row is something like 130, so there are extra spaces after the last value as well. I have tried joining and other things, but I couldn't figure out how to get the values to come together. Thanks. Kou

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Re: which language allows you to change an argument's value?
by Summercool Sept. 30, 2007

Sept. 30, 2007

On Sep 30, 4:18 am, 7stud -- <dol...(a)excite.com> wrote: > SpringFlowers AutumnMoon wrote: > > we have no way > > of knowing what we pass in could get changed. > > Sure you do. You look at the function's signature. In order to use > someone else's library, you have to know the function's signature. And > the signature explicitly tells you whether the value you pass in could > be changed. do you mean in C++? I tried to find signature in two C++ books and it is not there. Google has a few results but it looks something like prototype. Is signature the same as the function prototype in the .h file? If so, don't we usually just include <___.h> and forget about the rest. Documentation is fine although in some situation, the descriptions is 2 lines, and notes and warnings are 4, 5 times that, and the users' discussing it, holding different opinion is again 2, 3 times of that length. I think in Pascal and C, we can never have an argument modified unless we explicitly allow it, by passing in the pointer (address) of the argument. also i think for string, it is a bit different because by default, string is a pointer to char or the address of the first char in C and C ++. So it is like passing in the address already. it is when the argument n is something like 1 that makes me wonder.

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Re: Can you please give me some advice?
by George Sakkis Sept. 30, 2007

Sept. 30, 2007

On Sep 30, 2:54 pm, Ricardo Ar�oz <ricar...(a)gmail.com> wrote: > > Errhhh..... guys...... I think .kr means Korea.... so he would speak > Korean, not Chinese In this case, http://kr.diveintopython.org/html/index.htm might be more useful ;-) George

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Re: s.split() on multiple separators
by mrkafk＠gmail.com Sept. 30, 2007

Sept. 30, 2007

> > ['ab', 'd', '', 'ab', '', ''] > > Given your original string, I'm not sure how that would be the > expected result of "split c on the characters in dels". Oops, the inner loop should be: for i in xrange(0,len(c)): Now it works. > >>> c=' abcde abc cba fdsa bcd ' > >>> import re > >>> r = re.compile('[ce ]') > >>> r.split(c) > ['', 'ab', 'd', '', 'ab', '', '', 'ba', 'fdsa', 'b', 'd', ''] > > given that a regexp object has a split() method. That's probably optimum solution. Thanks! Regards, Marcin

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notify when process finishes (on unix)
by bahoo Sept. 30, 2007

Sept. 30, 2007

Hi, I'd like to write a script that sends me an email when a unix (Linux) process ends running (or CPU drops below some threshold). Could anyone point me to the relevant functions, or show me an example? Thanks bahoo

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code for number guessing by computer
by pramodmc4u＠gmail.com Sept. 30, 2007

Sept. 30, 2007

hi, please help me,,,,,, a newbie.......send me code for a programme in which the computer tell u the number that u guessed............

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Re: How to display a videostream in the PyQt GUI by a efficient way
by David Boddie Sept. 30, 2007

Sept. 30, 2007

On Sun Sep 30 09:10:40 CEST 2007, Kivilaya wrote: > I read the method in the given link and learn a lot from it. I'll > try to display the data inside a QWidget directly instead of the > current way. But I still have a question, is there any way to make the > displaying of RGB data in a QWidget more quickly. You can set certain flags to ensure that the widget isn't being updated or painted on too often. See the WA_OpaquePaintEvent and WA_NoSystemBackground flags: http://www.riverbankcomputing.com/Docs/PyQt4/html/qt.html#WidgetAttribute-e… The problem may be related to the conversion process rather than the time it takes to display the image. You mentioned that you were obtaining the images as PIL Image objects, but these need to be converted to QImage or QPixmap objects, so the raw data from the camera is being converted at least twice before it reaches the screen! > In fact, my work is to make a gui for displaying my > partners'experimental results to our teacher, the source video is no > need to be encoded to mpeg or h264 format, so I get the video from > camera in the raw format and display them without encodeing or > decoding process. Which operating system is this on? (I'm guessing that it's Windows because you mentioned the videocapture module.) > As my partners will do some experiments on the raw data, maybe add > a mark to label some area in the current frame, or change some part of > it, I get every frame as a picture before they process the picture > data, and then display the picture after their process. So, do you intend to process the video and store it in a file, or do you want to make these changes on a live video stream? > But displaying the pictures one by one in my current way is so slow, > I'm afraid that time spend on it is too long and the displaying of > results will be discontinuous. So I think maybe there is another way > to show these pictures. Is there another way of getting the data from the camera? Perhaps the author of videocapture has some ideas that can help you speed up the conversion and rendering process. Maybe the Device.getBuffer() function will provide data that can be passed directly to QPixmap.loadFromData(). David

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Re: Can you please give me some advice?
by George Sakkis Sept. 30, 2007

Sept. 30, 2007

On Sep 30, 6:22 am, Byung-Hee HWANG <b...(a)izb.knu.ac.kr> wrote: > Hi there, > > What is different between Ruby and Python? I am wondering what language > is really mine for work. Somebody tell me Ruby is clean or Python is > really easy! Anyway I will really make decision today what I have to > study from now on. What I make the decision is more difficult than to > know why I have to learn English. Yeah I do not like to learn English > because it is just very painful.. > > Can you please give me some advice? > > Byung-Hee "Dive into Python" has been translated in Chinese: http://www.woodpecker.org.cn/diveintopython/ Hope it helps, George

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ANN: eric 4.0.2 released
by Detlev Offenbach Sept. 30, 2007

Sept. 30, 2007

Hi, this is to inform you about the release of eric 4.0.2. This is mainly a bugfix release. As usual you may get it at http://www.die-offenbachs.de/eric/index.html ChangeLog --------- - compatibility fixes for Debian - added '-z' to the installer to inhibit compilation of the python files - changed code to not look for the Qt4 tools in a subdirectory of the Qt installation directory (it is now required, that the Qt bin directory is in the PATH) - changed code of Python debug client to better intercept output on non-win32 systems What is eric? ------------- eric is a Python and Ruby IDE with all batteries included. It is written using PyQt4 and QScintilla2. For details see the a.m. web site. Regards, Detlev -- Detlev Offenbach detlev(a)die-offenbachs.de

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How to unload a module after I've imported it.
by Johny Sept. 30, 2007

Sept. 30, 2007

Is it possible to unload a module after I've imported it. I have the main program from which I import several smaller programs. Some of these uses timeoutsocket module. But one of the smaller program can not work with the timeoutsocket module, so I must unload the timeoutsocket module, execute the program and then reload timeoutsocket module. So, s it possible to unload a module after I've imported it.. Thanks L.

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