Re: [Tutor] SUPER NEWB: basic search and replace
>I have a large volume of files to change so I need to > automate the search and replace. I'll be replacing > bits of text with other bits of text. This is working > for now but I'd like to know how a real programmer > would do it. A "real programmer" would use the right tool for the job, hence he/she would use sed! Not re-inventing the wheel is part of being a "real programmer" http://www.guidenet.net/resources/programmers.html :-) Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] GUI Programing
thank you all im reading up on it all its a diffreent mindset that i have tog et used toOn 9/1/06, Terry Carroll <[EMAIL PROTECTED] > wrote:On Fri, 1 Sep 2006, Alan Gauld wrote:> Fred Lundh's tutorial is much better nowadays - although longer. Tkinter docs are tough enough to come by that, in my view, longer isbetter.___Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] GUI Programing
On Fri, 1 Sep 2006, Alan Gauld wrote: > Fred Lundh's tutorial is much better nowadays - although longer. Tkinter docs are tough enough to come by that, in my view, longer is better. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] GUI Programing
> Tkinter is (IMO) easier to learn. In particular, check out > "Thinking > in Tkinter" (google for it); it's an excellent way to learn Tkinter. Last time I looked that was very out of date and still recommended the now obsolete parameters by dictionary stuyle of widget configuration. Fred Lundh's tutorial is much better nowadays - although longer. Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] GUI Programing
> I'm going to try some GUI programming does anyone know where the > start like > using tk or wx or what ever i want it to it will run on Windows UNIX > and Mac > systems can you tell me whats best to use and give me a link to a > good > tutorial? This is like asking which programming language is best, or which editor/IDE to use. Everyone has their own favourite. My personal view is: If you have used any GUI before then use wxPython - it looks better and has more widgets. But if you have never used a GUI toolkit before use Tkinter, its easier to learn (and use IMHO) and has much more documentation. Once you know Tkinter moving to wxPythobn is relatively straightforward because the underlying prionciples of all GUIs are the same. And of course Tkinter is based on Tk whicgh is also available for Perl and Tcl/Tk and Scheme. So its worth learning for its portability too. You can start with my GUI intro topic which teahches Tkinter but finishes with a wxPython example so you can quickly switch if you want to. BTW I strongly recommend startiung out with the raw toolkit and manual programming to understand how itall hangs together. Later you can pick up a GUI Builder like Glade/Blackadder/SpecTix etc. But its best to understand what these tools are doing first IMHO... Alan Gauld Author of the Learn to Program web site http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] SUPER NEWB: basic search and replace
Lanky Nibs wrote:
> I have a large volume of files to change so I need to
> automate the search and replace. I'll be replacing
> bits of text with other bits of text. This is working
> for now but I'd like to know how a real programmer
> would do it. The hard coded strings will eventually
> come from a list. All sugestions welcome and
> appreciated.
>
> #read all file lines into list and close
> allLines = fh.readlines()
> fh.close()
>
> #use split and join to replace a unique item
> chunk = allLines[0]
>
Is the data to be replaced always in the first line? You only look at
the first line.
> splitChunk = chunk.split('xVAR1x')
> newChunk = 'my shoes fell off'.join(splitChunk)
>
This is a very awkward way to replace part of a string. Try
newChunk = chunk.replace('xVAR1x', 'my shoes fell off')
> #write to a file
> file = open('test.html', 'w')
> for eachLine in newChunk:
> print 'writing line in text file'
> file.write(eachLine)
> file.close()
>
Are you sure this is doing what you want? newChunk is just the first
line of the file, iterating over it gives you each character from the file.
If I wanted to replace every instance of 'xVAR1x' in a single file with
'my shoes fell off', I would do it like this:
f = open(...)
data = f.read()
f.close()
data = data.replace('xVAR1x', 'my shoes fell off')
f = open(..., 'w')
f.write(data)
f.close()
Variations are possible depending on exactly what you want to do, but
this is the basic idea. No need to read a line at a time unless you
actually need to process by lines, or if the file is too big to fit in
memory (in which case your solution still needs a rewrite).
Kent
>
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Re: [Tutor] SUPER NEWB: basic search and replace
On Fri, Sep 01, 2006 at 09:26:36AM -0700, Lanky Nibs wrote:
> I have a large volume of files to change so I need to
> automate the search and replace. I'll be replacing
> bits of text with other bits of text. This is working
> for now but I'd like to know how a real programmer
> would do it. The hard coded strings will eventually
> come from a list. All sugestions welcome and
> appreciated.
>
> #read all file lines into list and close
> allLines = fh.readlines()
> fh.close()
>
> #use split and join to replace a unique item
> chunk = allLines[0]
> splitChunk = chunk.split('xVAR1x')
> newChunk = 'my shoes fell off'.join(splitChunk)
Instead, consider the following:
for line in allLines:
line = line.replace('xVAR1x', 'my shoes fell off')
outfile.write(line)
Dave
>
> #write to a file
> file = open('test.html', 'w')
> for eachLine in newChunk:
> print 'writing line in text file'
> file.write(eachLine)
> file.close()
>
--
Dave Kuhlman
http://www.rexx.com/~dkuhlman
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[Tutor] SUPER NEWB: basic search and replace
I have a large volume of files to change so I need to
automate the search and replace. I'll be replacing
bits of text with other bits of text. This is working
for now but I'd like to know how a real programmer
would do it. The hard coded strings will eventually
come from a list. All sugestions welcome and
appreciated.
#read all file lines into list and close
allLines = fh.readlines()
fh.close()
#use split and join to replace a unique item
chunk = allLines[0]
splitChunk = chunk.split('xVAR1x')
newChunk = 'my shoes fell off'.join(splitChunk)
#write to a file
file = open('test.html', 'w')
for eachLine in newChunk:
print 'writing line in text file'
file.write(eachLine)
file.close()
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Re: [Tutor] Securing a Computer...
>> I just got into high school, and the network and all the computers >> aren't secure at all...I'm trying to make a program that password >> protects the computer after an inactivity time, but there are some >> specific things I can't find how I'm supposed to do it. > > Windoze has this feature built in. It's called 'locking' the computer. > Look into it. Just as another non-Python comment: you should be using Control-Alt-Delete when logging into a Windows machine. It's the only key combination that's untrappable by other programs besdies the Windows kernel. See: http://en.wikipedia.org/wiki/Control-Alt-Delete#Windows_NT ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] logging module, how to print line numbers?
Hans Fangohr wrote: > Hi Kent (and others), > > On 01/09/06, Kent Johnson <[EMAIL PROTECTED]> wrote: > >> How are you running the program? What OS? What Python (2.3.??) >> > This is python 2.3.5 on Debian etch. Same results with python 2.4.4 on > Debian etch (although 'the linenumber' is 1072 instead of 988). > Running from the command line or in IDLE or ?? > >> Looking at the source (Python23\Lib\logging\__init__.py), the line >> number is pulled out of the stack by walking up the stack looking for a >> frame whose filename is different from _srcfile. What do you get if you >> print logging._srcfile and logging.__file__? >> > /usr/lib/python2.4/logging/__init__.py > /usr/lib/python2.4/logging/__init__.pyc > > I guess these files should rather be my source file(?). But they aren't. > No, they seem correct, they are the source file of the logging module. I'm perplexed, the values above seem correct. The way the logging module finds the line number is, it walks up through the stack looking for a stack frame that references a file different from the file containing the module itself. It uses the file and line number from that stack frame for the log. For some reason your stack frame has something different. One thing you could do is add a print to the logging module itself to see what it is seeing. In Python 2.3, there is a findCaller() method at lin 961 of logging/__init__.py. You could add print filename just after the line filename = os.path.normcase(co.co_filename) Then run your program again and see what it prints out. Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Tkinter: 'explanation text' when the mouse is over an image button ?
learner404 wrote: > Hello, > > With a Tkinter app I have buttons with an image filling each button like > this, > > bu10=Button(frame2, image=picPlay, bg="white", command=play) > > I want to give a small explanation of each button when the user puts the > mouse over the picture (something like the title tag in a hyperlink). > I thougth I saw this in Tkinter but can't find it here: > http://effbot.org/tkinterbook/button.htm You want a tooltip for the button. There is nothing built-in to Tkinter to do this. Here are a couple of possibilities: http://www.voidspace.org.uk/python/weblog/arch_d7_2006_07_01.shtml#e387 http://tkinter.unpythonic.net/wiki/ToolTip Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Tkinter: 'explanation text' when the mouse is over an image button ?
Hello,With a Tkinter app I have buttons with an image filling each button like this,bu10=Button(frame2, image=picPlay, bg="white", command=play)I want to give a small explanation of each button when the user puts the mouse over the picture (something like the title tag in a hyperlink). I thougth I saw this in Tkinter but can't find it here:http://effbot.org/tkinterbook/button.htmThanks for any suggestions to achieve this.learner404 ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
