Re: [Tutor] Question
> Just curious to wonder if Python can be used to write a > program to check an HTTP mail server for mail, Yes, you would probably use the urllib module for that. > and check more than one server, Yes that would be a fairly typical use for Python as a web client. > even if they are using different proxies, > i.e. HTTP for one and SMTP for the other. Proxies are servers that hide the real server, they act as pass through servers either to filter or cache the data or to protect the recipient or sender. http and smtp are protocols not proxies. Python can deal with multiple protocols fairly easily - there are even modules specifically for each but dealing with proxies is more difficult, it will rely on the proxies working like regular servers - which they should! But trying to access the real server behind the proxy may be impossible. Thanks, Nathan Pinno, Crew, Camrose McDonalds and owner/operator of Woffee ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Question about BASIC and Python
> I had a co-worker say to me at work that Python was related > to or based upon BASIC. Is this true, and if not, how can I > tell my friend why they are similar? Both Python and BASIC are interpreted languages intended to be used (amongst other things) to learn how to program. There the similarity ends. Python is very different to BASIC. Its different in the way it is interpreted, in the structure of the programs, the way functions operate, the type system, in fact just about every conceivable way. There are more similarities between Visual Basic - which is very different to the original BASIC - and Python, but they are still significantly different languages. Thats why I use VBScript (a lightweight VB) as a comparison with Python in my tutor - to illustrate how a *different* language does the same thing. Take a look at some of the topics in my tutor to see the differences. If Python is based on any other language its probably Lisp! Alan G Author of the Learn to Program web tutor http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] I've run into a jam on the exercise on file I/O
> What if I were to use ID's for the students and use the ID's as the > sequence > index, and link the students and their grades to the IDs? Its not necessary for what you are doing but it's how you'd normally do it in a relational database, so if you ever needed to turn your file based program into a full blown database then using IDs would actually help! The other thing you could do is hold all the data for a single student in one structure. Thus instead of having lots of lists all linked by a common index (or ID) you have one collection of students (probably a dictionary keyed by name) each with all of its own data. This involves a more complex data structure and is a move in the direction of object oriented programming but without actual classes and objects being involved. This might also allow you to use the shelve moduile to save/restore your data to file easily. Just a thought, Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] I need advice.
> I want to write a program that will convert time in any other > time zone to my time zone. This is a deceptively complex task. There are around 40 timezones varying by anything from 15 minutes to 2 hours. And some places change timezone throughout the year. Others have multiple daylight saving dates etc etc. > Would it be better to use the Python time molecule Use the force Luke... If a standrad module exists then its almost certain that more thought and debugging has gone into it than you want to expend! Use what's there and tweak it to suit your needs. HTH, Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] I need advice.
> I forgot to tell that I use Python 2.2.3. When I first got Python, I > got > 2.4.1, but it refused to run the second time. So I went and got > 2.2.3. Your answer would make sense if I had 2.4.1, but I don't. Version 2.3 should work and has the datetime stuff I think - just checked and it does... But 2.4 should work too, although I confess I haven't tried 2.4 yet except for cygwin. So it might be worth having another go at installing 2.4. Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] QUESTION
Hi Jane, > I'd like to know what kind of Python I can download. I've tried but > in vain! > My computer is windows xp servixe pack 1, version 2002. There are two main possibilities, either the generuc Python designed for any computer or the ActiveSTate vesion witch is the generic version with some Windows specifics added in. Since you are on Windows I'd recommend the ActiveState version: http://www.activestate.com/Products/ActivePython/ However it doesn't seem to work for me using Firefox - I suspect you need IE... So the alternative is the generic Python site: http://www.python.org/download/ Just click on the Windows installer Python 2.4.1 Windows installer (Windows binary -- does not include source) That should download an executable file to your computer. (Make a note of where it gets stored!) Execute that file and Python will be installed on your PC. You will find a new menu under Start->Programs Within that menu start off with "Python GUI" or "IDLE" or something similar - they keep changing the exact wording... When you wind up with a window containing a nearly blank screen and a >>> prompt, congratulations! you have started Python and you can start working your way through one of the non programmers tutorials - I am assuming you are a non programmer? HTH Alan G Author of the Learn to Program web tutor http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] mailman
Mohammad Moghimi a écrit : [...] checking that Python has a working distutils... configure: error: * Distutils is not available or is incomplete for /usr/bin/python * If you installed Python from RPM (or other package manager) * be sure to install the -devel package, or install Python * from source. See README.LINUX for details I downloaded Distutil from python.org http://www.python.org/sigs/distutils-sig/download/Distutils-1.0.2.tar.gz I wanted to install this one but I got another error message in running python setup.py install Traceback (most recent call last): File "setup.py", line 30, in ? packages = ['distutils', 'distutils.command'], File "/home/soccer/mohammad/python/Distutils-1.0.2/distutils/core.py", line 101, in setup _setup_distribution = dist = klass(attrs) File "/home/soccer/mohammad/python/Distutils-1.0.2/distutils/dist.py", line 130, in __init__ setattr(self, method_name, getattr(self.metadata, method_name)) AttributeError: DistributionMetadata instance has no attribute 'get___doc__' How can I solve this problem?! -- Mohammad Hi all, This problem is not about mailman, but about the Distutils. I have the same bug on Windows. It'is very boring because py2exe needs the distutils. The bug needs to be fixed manually in the source of the distutils in : "distutils/dist.py", line 130, in __init__" The bug is easy to fix (I will post the solution later, if I can found it). I hope this information will help you. Nobody else has this bug with the Distutils ? ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] terminology question
[EMAIL PROTECTED] wrote: > Quoting Dick Moores <[EMAIL PROTECTED]>: > > >>Why are list comprehensions called that? > > > Because that's what they're called in Haskell, I guess.. > > It's historical, based on the term "set comprehension" from mathematics, also > known as "set builder notation": > http://en.wikipedia.org/wiki/Set_comprehension The Wikipedia page on "list comprehension" explicitly makes the connection to "set comprehension" and shows how the math notation and Haskell syntax resemble each other. http://en.wikipedia.org/wiki/List_comprehension Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Corrupt files
Hello. I have created a program that automatically downloads some files I need. It can be .zip, .jpg, .mpg or .txt. However, a lot of the time urlretrieve downloads the file, gives no error, but the downloaded file is corrupted. I use a simple check for the size of the file. If it is way too small, I automatically remove it. The files are ok on the server. Is there some function/modulte that checks a files integrity wheter or not the file is corrupt or not? Thanks in advance. -- This email has been scanned for viruses & spam by Decna as - www.decna.no Denne e-posten er sjekket for virus & spam av Decna as - www.decna.no ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Color text in Text widget
Thanks.
Its works very well.
Santosh.
On 8/1/05, Jorge Louis de Castro <[EMAIL PROTECTED]> wrote:
> I found a way to do it but I'm not sure it is the cleanest. Maybe someone
> else on this list can offer a better solution.
>
> I use the text's configuration to define tags that I apply to sections of
> the text. For example:
>
> txtBox = Text(self, width=80, height=20)
> # configuration for red
> txtBox.tag_config("r", foreground="red")
> # configuration for blue
> txtBox.tag_config("b", foreground="blue")
>
> txtBox.insert(END,"I am red ", "r")
> txtBox.insert(END,"and I am blue\n", "b")
>
> Hope that helps
> jorge
>
> >From: sunny sunny <[EMAIL PROTECTED]>
> >To: tutor@python.org
> >Subject: [Tutor] Color text in Text widget
> >Date: Mon, 1 Aug 2005 15:35:52 -0400
> >
> >Hi all,
> >
> >How do I add color to the text in the Text widget? I tried using the
> >ASCII sequence but it didnt work.
> >
> >For example, I want to add:
> > This is red , but this is blue
> >
> >Thanks.
> >Santosh.
> >___
> >Tutor maillist - Tutor@python.org
> >http://mail.python.org/mailman/listinfo/tutor
>
>
>
___
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[Tutor] Directory or File ?
Hi all, I want to know if a file is a directory or a simple file. I have done a little ugly script : # i is my filename, os is imported old = os.getcwd() try: chdir(i) is_dir = True except: is_dir = False os.chdir(old) return is_dir But maybe there is a better way ? If you know a better way, please tell me. Thanks, Damien G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Directory or File ?
Damien wrote: > Hi all, > I want to know if a file is a directory or a simple file. Look at os.path.isdir() Kent > I have done a little ugly script : > # i is my filename, os is imported > old = os.getcwd() > try: > chdir(i) > is_dir = True > except: > is_dir = False > os.chdir(old) > return is_dir > > But maybe there is a better way ? > If you know a better way, please tell me. > > Thanks, > Damien G. > ___ > 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] Directory or File ?
Damien wrote: > Hi all, > I want to know if a file is a directory or a simple file. > I have done a little ugly script : > # i is my filename, os is imported > old = os.getcwd() > try: > chdir(i) > is_dir = True > except: > is_dir = False > os.chdir(old) > return is_dir > > But maybe there is a better way ? > If you know a better way, please tell me. > > Thanks, > Damien G. Use os.path.isdir: http://python.org/doc/2.4.1/lib/module-os.path.html#l2h-1739 HTH, Wolfram ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Directory or File ?
Ok, sorry. In the future, I will look more closely the module before sending my question. Thanks. Kent Johnson a écrit : Damien wrote: Hi all, I want to know if a file is a directory or a simple file. Look at os.path.isdir() Kent I have done a little ugly script : # i is my filename, os is imported old = os.getcwd() try: chdir(i) is_dir = True except: is_dir = False os.chdir(old) return is_dir But maybe there is a better way ? If you know a better way, please tell me. Thanks, Damien G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] time.sleep() error
Hi all, I am using time.sleep to stop my program execution for some time. I have imported time and am able to use it sucessfully in the main program. However if I use it in any function I get the following error: the time.sleep(1) command generates this error : TypeError : 'int' object is not callable I have tried to add import time after the function definition, it still does not work. Please help. Thanks. Santosh ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] time.sleep() error
sunny sunny wrote: > Hi all, > > I am using time.sleep to stop my program execution for some time. I > have imported time and am able to use it sucessfully in the main > program. > > However if I use it in any function I get the following error: > > the time.sleep(1) command generates this error : > TypeError : 'int' object is not callable > > I have tried to add import time after the function definition, it > still does not work. Please help. It looks like somehow the name time.sleep has been bound to an integer. Please post the code and the full error trace. Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] time.sleep() error
Some additional information: I am calling this function from a thread and I get the error. However if I call the function from the main program it works fine. I am using thread.start_new_thread() to start the thread. Thanks. Santosh. On 8/2/05, sunny sunny <[EMAIL PROTECTED]> wrote: > Hi all, > > I am using time.sleep to stop my program execution for some time. I > have imported time and am able to use it sucessfully in the main > program. > > However if I use it in any function I get the following error: > > the time.sleep(1) command generates this error : > TypeError : 'int' object is not callable > > I have tried to add import time after the function definition, it > still does not work. Please help. > > Thanks. > Santosh > ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] time.sleep() error
sunny sunny napsal(a): >Hi all, > >I am using time.sleep to stop my program execution for some time. I >have imported time and am able to use it sucessfully in the main >program. > >However if I use it in any function I get the following error: > >the time.sleep(1) command generates this error : >TypeError : 'int' object is not callable > > > Dont you actually have something like this?: from time import * # somewhere you use sleep like this sleep=10 # and then sleep(1) # you get: #sleep(1) #TypeError: 'int' object is not callable In this case you "overwrite" the original function sleep() with your/my variable sleep Solution: rename your/my variable sleep to f.e. notAwake=10 :-) -- geon ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] fourier transform
Hi
Pawel Kraszewski wrote:
> 4. The answer is symmetrical - usually you take only half of it. I
> don't
> remember the exact difference between the halves, but you may find it
> in any
> article on FFT.
The real part is identical the imaginary part has the opposite sign
("same amplitude, opposite phase").
Jeff Peery wrote:
> thanks for the help. I think I'm understanding this a bit better.
> although I still don't completely understand the output. here is an
> example... for the input I have 1024 samples taken from a 1 Hz square
> wave with amplitude = 1. for the output I would expect an infinite
> number of frequencies. the output from FFT.fft(myData).real is this:
>
> .
> .
> .
> -0.498 1
> 0.0 2
> -0.498 3
> 0.0 4
> -0.498 5
> 0.0 6
> -0.498 7
> 0.0 8
Frankly, I don't understand this. After your description I thought your
input is like "array([0, 1, 0, ..., 1, 0, 1])". But this can't be.
Could you show us how exactly your input array looks like?
And how do we have to read your output? Is this a 1d-array? What do the
two numbers per line mean?
Cheers
Christian
PS Sorry for the late reply.
___
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Re: [Tutor] I need advice.
I think I'll leave this one for someone else. I got too confused too quick. - Original Message - From: "Alan G" <[EMAIL PROTECTED]> To: "Nathan Pinno" <[EMAIL PROTECTED]>; "Tutor mailing list" Sent: Tuesday, August 02, 2005 1:47 AM Subject: Re: [Tutor] I need advice. >> I want to write a program that will convert time in any other time zone >> to my time zone. > > This is a deceptively complex task. There are around 40 timezones > varying by anything from 15 minutes to 2 hours. And some places change > timezone throughout the year. Others have multiple daylight saving dates > etc etc. > >> Would it be better to use the Python time molecule > > Use the force Luke... > If a standrad module exists then its almost certain that more thought and > debugging has gone into it than you want to expend! > Use what's there and tweak it to suit your needs. > > HTH, > > Alan G. > ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] (no subject)
This is a totally unrelated question but does anyone know a good free iso image burner? greg _ Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/ ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] (no subject)
Greg Janczak schrieb: > This is a totally unrelated question but does anyone know a good free iso > image burner? Well, what don't you like about cdrecord? Otherwise, specifying which operating system you're intending to use this on would be quite a good idea. ;) Cheers, Kris -- "Sei Du selbst die Veränderung, die Du Dir wünschst für diese Welt." (Gandhi) -| Kristian Rink icq# 48874445 jab# [EMAIL PROTECTED] -| http://www.zimmer428.net ** http://www.fotolog.net/kawazu ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] time.sleep() error
geon napsal(a): sunny sunny napsal(a): Hi all, I am using time.sleep to stop my program execution for some time. I have imported time and am able to use it sucessfully in the main program. However if I use it in any function I get the following error: the time.sleep(1) command generates this error : TypeError : 'int' object is not callable Dont you actually have something like this?: from time import * # somewhere you use sleep like this sleep=10 # and then sleep(1) # you get: #sleep(1) #TypeError: 'int' object is not callable In this case you "overwrite" the original function sleep() with your/my variable sleep Solution: rename your/my variable sleep to f.e. notAwake=10 :-) Solution2: do not use from time import *. Prefer import time. Now you know why :-) Its not a waste of time still to rewrite you code in this way. -- geon ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Question about resetting values
I am writing a Blackjack program, and was wondering how to reset the values to zero, e.g. cash = 0? Thanks, Nathan Pinno,Crew, Camrose McDonalds and owner/operator of Woffee BEGIN:VCARD VERSION:2.1 N:Pinno;Nathan;Paul;Mr. FN:Pinno, Nathan Paul ORG:Woffee;Executive TITLE:Owner/operator TEL;CELL;VOICE:7806085529 ADR;WORK:;President/CEO LABEL;WORK:President/CEO ADR;HOME:;;Box 1783;Camrose;Alberta;T4V1X7;Canada LABEL;HOME;ENCODING=QUOTED-PRINTABLE:Box 1783=0D=0ACamrose, Alberta T4V1X7=0D=0ACanada X-WAB-GENDER:2 URL;HOME:http://falcon3166.tripod.com URL;WORK:http://falcon3166.tripod.com/Woffee.htm BDAY:19850221 EMAIL;PREF;INTERNET:[EMAIL PROTECTED] EMAIL;INTERNET:[EMAIL PROTECTED] EMAIL;INTERNET:[EMAIL PROTECTED] EMAIL;INTERNET:[EMAIL PROTECTED] REV:20050802T180836Z END:VCARD ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] JBUS and Python which way
pyserial provides serial communication but I think I require an interface that would abstract/simplify the JBUS/MODBUS protocol. Thanks Danny and Alan for all the help. Will check out comp.lang.python for advice. Best Miguel --- Chegou o Clix ADSL até 16 Megas Internet + Telefone desde 22,5/mês Acabe de vez com os 15 da assinatura telefónica! Saiba mais em http://adsl.clix.pt ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Corrupt files
On Tue, 2 Aug 2005, [iso-8859-1] �yvind wrote: > Is there some function/modulte that checks a files integrity wheter or > not the file is corrupt or not? Hello! A general technique that people have used before is to provide file "checksums" of large files. These checksums can be used to verify that the file passed through fine over the wire. As a concrete example, the large Python 2.41 installer file is paired with a "md5" checksum, listed below under "Files, MD5 checksums, signatures, and sizes:" at the bottom of: http://www.python.org/2.4.1/ So the idea is to take the downloaded file, run the standard 'md5sum' checksum program, and see that the checksums match the published one. (If you don't have this utility: http://www.python.org/2.4.1/md5sum.py) If the checksums don't match up, there's definitely file corruption. Hope this helps! ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Corrupt files
Øyvind napsal(a): >Hello. > >I have created a program that automatically downloads some files I need. >It can be .zip, .jpg, .mpg or .txt. However, a lot of the time urlretrieve >downloads the file, gives no error, but the downloaded file is corrupted. >I use a simple check for the size of the file. If it is way too small, I >automatically remove it. > remove it and try to download it again, lets say , 3times until you get correct copy... >The files are ok on the server. > >Is there some function/modulte that checks a files integrity wheter or not >the file is corrupt or not? > > > Until you are provided with, say, md5 checksum, there is no other way than comparing sizes, I think ... -- geon ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] For Damien
rk. >> > >> >For example, I want to add: >> > This is red , but this is blue >> > >> >Thanks. >> >Santosh. >> >___ >> >Tutor maillist - Tutor@python.org >> >http://mail.python.org/mailman/listinfo/tutor >> >> >> > > > -- > > Message: 4 > Date: Tue, 02 Aug 2005 16:11:20 +0200 > From: Damien <[EMAIL PROTECTED]> > Subject: [Tutor] Directory or File ? > To: tutor@python.org > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi all, > I want to know if a file is a directory or a simple file. > I have done a little ugly script : > # i is my filename, os is imported > old = os.getcwd() > try: > chdir(i) > is_dir = True > except: > is_dir = False > os.chdir(old) > return is_dir > > But maybe there is a better way ? > If you know a better way, please tell me. > > Thanks, > Damien G. > > > -- > > Message: 5 > Date: Tue, 02 Aug 2005 10:21:10 -0400 > From: Kent Johnson <[EMAIL PROTECTED]> > Subject: Re: [Tutor] Directory or File ? > Cc: tutor@python.org > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Damien wrote: >> Hi all, >> I want to know if a file is a directory or a simple file. > > Look at os.path.isdir() > > Kent > >> I have done a little ugly script : >> # i is my filename, os is imported >> old = os.getcwd() >> try: >> chdir(i) >> is_dir = True >> except: >> is_dir = False >> os.chdir(old) >> return is_dir >> >> But maybe there is a better way ? >> If you know a better way, please tell me. >> >> Thanks, >> Damien G. >> ___ >> Tutor maillist - Tutor@python.org >> http://mail.python.org/mailman/listinfo/tutor >> > > > > -- > > Message: 6 > Date: Tue, 02 Aug 2005 16:27:19 +0200 > From: Wolfram Kraus <[EMAIL PROTECTED]> > Subject: Re: [Tutor] Directory or File ? > To: tutor@python.org > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=us-ascii; format=flowed > > Damien wrote: >> Hi all, >> I want to know if a file is a directory or a simple file. >> I have done a little ugly script : >> # i is my filename, os is imported >> old = os.getcwd() >> try: >> chdir(i) >> is_dir = True >> except: >> is_dir = False >> os.chdir(old) >> return is_dir >> >> But maybe there is a better way ? >> If you know a better way, please tell me. >> >> Thanks, >> Damien G. > > Use os.path.isdir: > http://python.org/doc/2.4.1/lib/module-os.path.html#l2h-1739 > > HTH, > Wolfram > > > > -- > > Message: 7 > Date: Tue, 02 Aug 2005 18:00:07 +0200 > From: Damien <[EMAIL PROTECTED]> > Subject: Re: [Tutor] Directory or File ? > To: Kent Johnson <[EMAIL PROTECTED]>, Wolfram Kraus > <[EMAIL PROTECTED]> > Cc: tutor@python.org > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="iso-8859-1" > > Ok, sorry. In the future, I will look more closely the module before > sending my question. > Thanks. > > Kent Johnson a ?crit : > >>Damien wrote: >> >> >>>Hi all, >>>I want to know if a file is a directory or a simple file. >>> >>> >> >>Look at os.path.isdir() >> >>Kent >> >> >> >>>I have done a little ugly script : >>># i is my filename, os is imported >>>old = os.getcwd() >>>try: >>>chdir(i) >>>is_dir = True >>>except: >>>is_dir = False >>>os.chdir(old) >>>return is_dir >>> >>>But maybe there is a better way ? >>>If you know a better way, please tell me. >>> >>>Thanks, >>>Damien G. >>>___ >>>Tutor maillist - Tutor@python.org >>>http://mail.python.org/mailman/listinfo/tutor >>> >>> >>> >> >>___ >>Tutor maillist - Tutor@python.org >>http://mail.python.org/mailman/listinfo/tutor >> >> >> > > -- next part -- > An HTML attachment was scrubbed...
Re: [Tutor] I need advice.
I am now using Python 2.4.1, but decided to abandon it. It got too confusing too fast. I'm better off writing simple games and apps for now. - Original Message - From: "Nathan Pinno" <[EMAIL PROTECTED]> To: "Danny Yoo" <[EMAIL PROTECTED]> Cc: "Tutor mailing list" Sent: Tuesday, August 02, 2005 12:02 AM Subject: Re: [Tutor] I need advice. >I forgot to tell that I use Python 2.2.3. When I first got Python, I got > 2.4.1, but it refused to run the second time. So I went and got 2.2.3. > Your > answer would make sense if I had 2.4.1, but I don't. > - Original Message - > From: "Danny Yoo" <[EMAIL PROTECTED]> > To: "Nathan Pinno" <[EMAIL PROTECTED]> > Cc: "Tutor mailing list" > Sent: Monday, August 01, 2005 11:41 PM > Subject: Re: [Tutor] I need advice. > > >> >> >> On Mon, 1 Aug 2005, Nathan Pinno wrote: >> >>> I want to write a program that will convert time in any other time zone >>> to my time zone. Would it be better to use the Python time molecule or >>> just a whole bunch of if statements? >> >> Hi Nathan, >> >> I'd recommend looking at the 'datetime' Python module. Getting this >> stuff >> right is hard, so unless you really want to learn how time conversions >> work, take advantage of the library. There's something there that does >> do >> time zones: >> >>http://www.python.org/doc/lib/datetime-tzinfo.html >>http://www.python.org/doc/lib/tzinfo-examples.txt >> >> Good luck! >> >> > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] print a line in IDLE as bold, italics or a color
Hello all of you, I am trying to simply(?) print some text in a print statement as bold (or itlaics or an certain color). How do I do this in python? Browsing the web gives we all kind of soluation, but non seem to work (a lot are related when printing on the web). Say I want to print the text (in the mentioned format): This is bold, red, blue, italics How do I do this in python 2.2 and using IDLE? Thanks for your help. All the best, Victor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Corrupt files (fwd)
-- Forwarded message -- Date: Tue, 2 Aug 2005 22:12:34 +0200 (CEST) From: "[iso-8859-1] �yvind" <[EMAIL PROTECTED]> To: Danny Yoo <[EMAIL PROTECTED]> Subject: Re: [Tutor] Corrupt files Hello and thank you. I don't really think that will help. The files are mostly smaller ones of for example jpg, avi, txt, doc and xls files. It is not published any MD5 checksums. Is there any way to check for example that a jpg file is completed without opening it? Or, is there some way to check the filesize on the server thru http (urlretrieve) and compare with the filesize of the downloaded file? Do you think that would work? Thanks in advance > > > On Tue, 2 Aug 2005, [iso-8859-1] �yvind wrote: > >> Is there some function/modulte that checks a files integrity wheter or >> not the file is corrupt or not? > > Hello! > > A general technique that people have used before is to provide file > "checksums" of large files. These checksums can be used to verify that > the file passed through fine over the wire. > > As a concrete example, the large Python 2.41 installer file is paired with > a "md5" checksum, listed below under "Files, MD5 checksums, signatures, > and sizes:" at the bottom of: > > http://www.python.org/2.4.1/ > > So the idea is to take the downloaded file, run the standard 'md5sum' > checksum program, and see that the checksums match the published one. > (If you don't have this utility: http://www.python.org/2.4.1/md5sum.py) > If the checksums don't match up, there's definitely file corruption. > > > Hope this helps! > > > -- > This email has been scanned for viruses & spam by Decna as - www.decna.no > Denne e-posten er sjekket for virus & spam av Decna as - www.decna.no > > -- This email has been scanned for viruses & spam by Decna as - www.decna.no Denne e-posten er sjekket for virus & spam av Decna as - www.decna.no ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Question about resetting values
> I am writing a Blackjack program, and was wondering how to > reset the values to zero, e.g. cash = 0? Yes, that's how you do it. Now what is the bit you don't understand? Alan G Author of the Learn to Program web tutor http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Corrupt files
>>I have created a program that automatically downloads some files I >>need. >>It can be .zip, .jpg, .mpg or .txt. However, a lot of the time >>urlretrieve >>downloads the file, gives no error, but the downloaded file is >>corrupted. >>I use a simple check for the size of the file. If it is way too >>small, I >>automatically remove it. Is it possible you are downloading a binary file as a text file? If so the EOF character may be present and this is what truncates the file. A sign that this is the problem is if the same file always stops after the same number of bytes. I've never used urlretrieve but its a common problewm with ftp, and I assume url is the same. Is there a flag/parameter you can set to fetch in binary mode? Just guessing, Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Corrupt files
Rumor has it that geon may have mentioned these words: >Øyvind napsal(a): > > >Hello. > > > >I have created a program that automatically downloads some files I need. > >It can be .zip, .jpg, .mpg or .txt. However, a lot of the time urlretrieve > >downloads the file, gives no error, but the downloaded file is corrupted. > >I use a simple check for the size of the file. If it is way too small, I > >automatically remove it. > > > >remove it and try to download it again, lets say , 3times until you get >correct copy... Or, depending on it's extension, try to open the newly downloaded file with the corresponding Python extension, i.e. (.jpg|.gif|.png) try to open with PIL[1], .zip files with the python zipfile module, etc. I *think* there's modules for .mpgs and maybe .avi's... but .txt files might be tough to authenticate, as there's no actual 'file format.' This python pseudocode might explain more: =-=-=-=-=-=-= snip here =-=-=-=-=-=-= def openzip(filename): import zipfile try: filebuf = zipfile.open(filename) except: return "Error 99: cannot open file; corrupted zipfile." filebuf.close() return None if __name__ == '__main__': if filename[:-4] == '.zip': retcode = openzip(filename) if retcode != None: print "Corrupt File - Try to download again!" =-=-=-=-=-=-= snip here =-=-=-=-=-=-= Just put an 'openzip' or 'openjpg' type of function for each type of file you'll need to authenticate. [[ This code will *not* run -- it certainly won't run in Eudora (where it's being typed), so it's only for showing the general idea... YMMV, UAYOR, etc. ;-) ]] Hope this helps, Roger "Merch" Merchberger [1] PIL == Python Image Library; it will open almost any type of static graphic image available. -- Roger "Merch" Merchberger | "Bugs of a feather flock together." sysadmin, Iceberg Computers | Russell Nelson [EMAIL PROTECTED] | ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Deleting an entry from a dictionary
Hello-
This must be simple, but for the life of me I can't figure out how to
delete an entry from a dictionary. For example,
meals = {}
meals['breakfast'] = 'slimfast'
meals['lunch'] = 'slimfast'
meals['dinner'] = 'something sensible'
How do I eliminate 'lunch' from the dictionary so that I only have
'breakfast' and 'dinner'?
Thanks!
--greg
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Re: [Tutor] Deleting an entry from a dictionary
On Tue, 2 Aug 2005, Greg Lindstrom wrote:
> This must be simple, but for the life of me I can't figure out how to
> delete an entry from a dictionary. For example,
>
> meals = {}
> meals['breakfast'] = 'slimfast'
> meals['lunch'] = 'slimfast'
> meals['dinner'] = 'something sensible'
>
> How do I eliminate 'lunch' from the dictionary so that I only have
> 'breakfast' and 'dinner'?
Hi Greg,
Actually, it isn't obvious at all, so don't be too discouraged. The 'del'
statement should do the trick:
##
>>> d = {'a': 'Alpha', 'b' : 'Beta'}
>>> del d['a']
>>> d
{'b': 'Beta'}
##
Here's a reference list of all the things you can do to a dictionary:
http://www.python.org/doc/lib/typesmapping.html
Good luck!
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Re: [Tutor] Deleting an entry from a dictionary
meals.pop(key) will do it.
Example:
>>> meals = {}
>>> meals['breakfast'] = 'slimfast'
>>> meals['lunch'] = 'slimfast'
>>> meals['dinner'] = 'something sensible'
>>> meals
{'lunch': 'slimfast', 'breakfast': 'slimfast', 'dinner': 'something sensible'}
>>> meals.pop("breakfast")
'slimfast'
>>> meals
{'lunch': 'slimfast', 'dinner': 'something sensible'}On 8/2/05, Greg Lindstrom <[EMAIL PROTECTED]
> wrote:Hello-This must be simple, but for the life of me I can't figure out how to
delete an entry from a dictionary. For example,meals = {}meals['breakfast'] = 'slimfast'meals['lunch'] = 'slimfast'meals['dinner'] = 'something sensible'How do I eliminate 'lunch' from the dictionary so that I only have
'breakfast' and 'dinner'?Thanks!--greg___Tutor maillist - Tutor@python.org
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Re: [Tutor] print a line in IDLE as bold, italics or a color
On Tue, 2 Aug 2005, Victor Reijs wrote: > I am trying to simply(?) print some text in a print statement as bold > (or itlaics or an certain color). How do I do this in python? Browsing > the web gives we all kind of soluation, but non seem to work (a lot are > related when printing on the web). > > Say I want to print the text (in the mentioned format): This is bold, > red, blue, italics > > How do I do this in python 2.2 and using IDLE? Hi Victor, You may need to open up a special window for doing text displays with some variety. The Tkinter system provides one, which can be opened up like this: ## import Tkinter txtBox = Text() ## We had some discussion about this just yesterday, and Jorge Louis de Castro showed how to selectively insert colored text into that txtBox: http://mail.python.org/pipermail/tutor/2005-August/040244.html Hope this helps! ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] substituting empty line with stuff
Hello group:
I have a file (3339203 lines) that looks like this:
(col:1)(col:2) (col:3)
AD134KL
X X
X X
X X
AD144KL
Y Y
Y Y
Now I have to fill the rows in column 1 with their
designated stuff:
AD134KL
AD134KL X X
AD134KL X X
AD134KL X X
AD144KL
AD144KL Y Y
AD144KL Y Y
My code:
f1 = open('xx','r')
meat = f1.readlines()
mind = []
for i in range(len(meat)):
if meat[i].startswith('AD'):
mind.append(i)
mind = [0,4]
for i in range(len(mind)):
k = i+1
l = mind[i]+1
j = mind[k]-1
print l,j
1 3
Logic: Now I want to substitute 'AD134KL' between 0
and 4 which is 1,2,and 3. and move on..
After coming to this stage, I lost grip and I do not
know what to do..
Can experts help me please.
thank you
srini
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Re: [Tutor] print a line in IDLE as bold, italics or a color
On Tue, 2 Aug 2005, Victor Reijs wrote: > This is in a seperate text box, but I want to have the colors > (bold/italics) in the default IDLE window. [Note: please use Reply-to-all] This will probably be more difficult. I don't believe IDLE itself allows a user's program to set its own fonts and colors within the running IDLE window. I'm sure it's technically possible, but not without some significant hacking at the IDLE interface. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] print a line in IDLE as bold, italics or a color
Hello Danny, Danny Yoo wrote: >>This is in a seperate text box, but I want to have the colors >>(bold/italics) in the default IDLE window. > > This will probably be more difficult. I don't believe IDLE itself allows > a user's program to set its own fonts and colors within the running IDLE > window. > > I'm sure it's technically possible, but not without some significant > hacking at the IDLE interface. Error messages in IDLE also get a color (red), so it loooks to be standard 'IDLE'/python;-) Also IDEL recognize keywords while typing and changes the color (to orange), so it is quite normal in IDLE... But now; how can user's python program use it? All the best, Victor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] fourier transform
Hi Christian,
sorry for the lack of detail. how about I use a sine wave because I know what the output should look like - amplitude of one at frequency equal to the frequency of the sine wave.
one period of a sin wave that cycles at one hertz:
period = 1
input = sin(arange(0,64)*3.14159*2/64.0)
do the fft:myFFT = FFT.real_fft(myData)
the change in time between elements is:
delta_time = period/64
inverse of time is the frequency:
delta_freq = 1/delta_time
print the results:
for i in range(1,len(myFFT)): print myFFT[i], delta_freq*i
hope this is more clear. from the output I would expect that two spikes appear with amplitude = 1. one spike is the positive frequency (first half of the fft) and another spike is the negative frequency (second half), the first half and second half are symmetrical about the midpoint of the fft. but this is what I get:
-8.22612478587e-005 64.02.65354186171e-006 128.02.65357174311e-006 192.02.65358011376e-006 256.02.65358370024e-006 320.02.65358557785e-006 384.02.65358668451e-006 448.02.65358739808e-006 512.02.65358788076e-006 576.02.65358822231e-006 640.0
.
.
.
I don't understand the output amplitudes. they should all be zero except for at one herz it should be one. not sure about the frequency for that matter either. I gotta dig up my math book and figure this out. in the meantime any suggestions for what this is outputing would be greatly appreciated! thanks.
Jeff
Christian Meesters <[EMAIL PROTECTED]> wrote:
HiPawel Kraszewski wrote:> 4. The answer is symmetrical - usually you take only half of it. I > don't> remember the exact difference between the halves, but you may find it > in any> article on FFT.The real part is identical the imaginary part has the opposite sign ("same amplitude, opposite phase").Jeff Peery wrote:> thanks for the help. I think I'm understanding this a bit better. > although I still don't completely understand the output. here is an > example... for the input I have 1024 samples taken from a 1 Hz square > wave with amplitude = 1. for the output I would expect an infinite > number of frequencies. the output from FFT.fft(myData).real is this:>> .> .> .> -0.498 1> 0.0 2> -0.498 3> 0.0 4> -0.498 5&g!
t; 0.0
6> -0.498 7> 0.0 8Frankly, I don't understand this. After your description I thought your input is like "array([0, 1, 0, ..., 1, 0, 1])". But this can't be. Could you show us how exactly your input array looks like?And how do we have to read your output? Is this a 1d-array? What do the two numbers per line mean?CheersChristianPS Sorry for the late reply.___Tutor maillist - Tutor@python.orghttp://mail.python.org/mailman/listinfo/tutor___
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Re: [Tutor] I need advice.
On Tue, 2 Aug 2005 10:12:28 +0100 "Alan G" <[EMAIL PROTECTED]> wrote: > > > I forgot to tell that I use Python 2.2.3. When I first got Python, I > > got > > 2.4.1, but it refused to run the second time. So I went and got > > 2.2.3. Your answer would make sense if I had 2.4.1, but I don't. > > Version 2.3 should work and has the datetime stuff I think > - just checked and it does... > > But 2.4 should work too, although I confess I haven't tried 2.4 yet > except > for cygwin. So it might be worth having another go at installing 2.4. > > Alan G. > > I use 2.4 on the 'Doze box at work. I have no problems with it so far. Of course, I can't install my own RDBMS (they would freak!), but I've managed to get away with Python. :-) I'm running Python 2.3 on my SUSE 9.2 box. Don -- evangelinuxGNU Evangelist http://matheteuo.org/ http://chaddb.sourceforge.net/ "Free software is like God's love - you can share it with anyone anytime anywhere." ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Question about resetting values
Never mind all. I was just being stupid as usual. I thought that there might be a Python command for resetting and wanted to find out if that was the case. - Original Message - From: "Alan G" <[EMAIL PROTECTED]> To: "Nathan Pinno" <[EMAIL PROTECTED]>; "Tutor mailing list" Sent: Tuesday, August 02, 2005 2:45 PM Subject: Re: [Tutor] Question about resetting values >> I am writing a Blackjack program, and was wondering how to reset the >> values to zero, e.g. cash = 0? > > Yes, that's how you do it. Now what is the bit you don't understand? > > Alan G > Author of the Learn to Program web tutor > http://www.freenetpages.co.uk/hp/alan.gauld > ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] I need advice about which way to go.
Hi all, I am writing a poker game and a blackjack game. I was wondering which way would be Python smart and work properly. I am trying to figure out whether or not to use t(n) as a card indicator, when n = randomly drawn number. I could go that way, or code it as t1, t2, t3, etc. Which way is the right and correct way to go? Also for blackjack, I want to use it as playertotal = playertotal + n, and computertotal = computertotal + n. or 1,2,3, etc. Which is better? Thanks, Nathan Pinno,Crew, Camrose McDonalds and owner/operator of Woffee BEGIN:VCARD VERSION:2.1 N:Pinno;Nathan;Paul;Mr. FN:Pinno, Nathan Paul ORG:Woffee;Executive TITLE:Owner/operator TEL;CELL;VOICE:7806085529 ADR;WORK:;President/CEO LABEL;WORK:President/CEO ADR;HOME:;;Box 1783;Camrose;Alberta;T4V1X7;Canada LABEL;HOME;ENCODING=QUOTED-PRINTABLE:Box 1783=0D=0ACamrose, Alberta T4V1X7=0D=0ACanada X-WAB-GENDER:2 URL;HOME:http://falcon3166.tripod.com URL;WORK:http://falcon3166.tripod.com/Woffee.htm BDAY:19850221 EMAIL;PREF;INTERNET:[EMAIL PROTECTED] EMAIL;INTERNET:[EMAIL PROTECTED] EMAIL;INTERNET:[EMAIL PROTECTED] EMAIL;INTERNET:[EMAIL PROTECTED] REV:20050803T063928Z END:VCARD ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Corrupt files (fwd)
On Tue, 2005-08-02 at 13:22 -0700, Danny Yoo wrote: > > -- Forwarded message -- > Date: Tue, 2 Aug 2005 22:12:34 +0200 (CEST) > From: "[iso-8859-1] yvind" <[EMAIL PROTECTED]> > To: Danny Yoo <[EMAIL PROTECTED]> > Subject: Re: [Tutor] Corrupt files > > Hello and thank you. > > I don't really think that will help. The files are mostly smaller ones of > for example jpg, avi, txt, doc and xls files. It is not published any MD5 > checksums. Is there any way to check for example that a jpg file is > completed without opening it? Or, is there some way to check the filesize > on the server thru http (urlretrieve) and compare with the filesize of the > downloaded file? Do you think that would work? > > Thanks in advance > I'm not sure what this is all about, but here's something you might find it useful. An HTTP "HEAD" request is like an HTTP "GET" (or normal retrieval) but the server will not send any data, only the header part. This might be useful to you to compare the size and modification date of the files. Of course, this all assume that the server does send such information (sadly, some badly programmed/configured HTTP server don't do that!). For more information about "GET" and "HEAD", search the web or ask here again. Ziyad. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
