Re: [Tutor] (no subject)
So the extent of your effort is "Would anyone know how to Ctrl+c". That deserves an award. 2009/3/17 Jared White > Would anyone know how to Write an application that displays the following > patterns separately, one below the other. Use for or while loops to generate > the patterns. All asterisks (*) should be printed by a single statement of > print( '*' ); which causes the asterisks to print side by side. A statement > of println(\n); can be used to move to the next line. > * > ** > *** > > * > ** > *** > > * > ** > > ** > * > > *** > ** > * > > *** > ** > * > dukelx2...@gmail.com > > _______ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > > -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Best Python Editor
Back when I used Windows I used this: http://www.crimsoneditor.com/ I think its not being developed anymore, but it is a great editor/IDE that supports many languages. -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] noob question (Windows, Python 3.1)
2009/8/6 Joshua Harper
> Ok, so I am trying to learn python, and I am reading many tutorial type
> things and I am kind of stuck with implementing some of the code... so for
> example the tutorial says "*To get the examples working properly, write
> the programs in a text file and then run that with the interpreter*"
> Alright...simple enough so I wirte the example program:
>
> x = input("Please enter a number: ")
> print "The square of that number is
>
> I save this as a .py and Open With>python.exe. OK, so that gives me the
> terminal ansking me to enter a number, I enter a number and click enter and
> then it prints in like half a nanosecond and the cmd line window closes. I
> want to know how to have the window stay open so that, in future scripts I
> may be able to actually see what was printed. I talked to my friend and he
> said that he has the same problem...anybody?...help???
>
>
It closes because it is finished.
If you want to see the result, you could either:
- Place another input("") after the print statement.
- Run the program from the command prompt (in which case you will probably
need to set the path)
--
Michael Connors
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Re: [Tutor] Pyduino
> > > > You wouldn't want to run python on a 16 mhz processor, the interpreter > would use up all your resources. The Arduino language is not too hard > to learn. > > > I have followed some tutorials in the Arduino playground, for talking to the arduino from Python. You can do things like tell your LED to turn on and off based on a key press on your computers keyboard, and from there you can probably figure out how to do plenty of other things. The coding for the Arduino is still done in the native language, but the client you use to speak to the connected arduino would be written in Python. -- Michael Connors Leiden The Netherlands ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Invitation to connect on LinkedIn
Gmail adds everyone you mail to your address book, and sites like LinkedIn ask for your email account credentials to search for contacts from your address book. I think this could happen to anyone who is unfamiliar with either service. Michael 2009/9/15 Kent Johnson > I'm going to be charitable and assume this is a mistake. This is completely > inappropriate to post to the tutor list. > > Kent > > On Tue, Sep 15, 2009 at 6:50 AM, Govind Agrawal wrote: > >> LinkedIn >> >> I'd like to add you to my professional network on LinkedIn. >> >> - Govind >> >> Accept Govind Agrawal's invite: >> https://www.linkedin.com/e/isd/738276939/KwugpKmr/ >> >> © 2009, LinkedIn Corporation >> >> ___ >> Tutor maillist - Tutor@python.org >> To unsubscribe or change subscription options: >> http://mail.python.org/mailman/listinfo/tutor >> >> > > ___ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor > > -- Michael Connors Burggravenlaan 148, Leiden 2313 HZ, The Netherlands 0031611520252 ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] How can I escape a pound symbol in my script?
"And this is really off-topic now! :-)" Really interesting though, hopefully it will come up in a pub quiz. On 06/07/07, Alan Gauld <[EMAIL PROTECTED]> wrote: "Kent Johnson" <[EMAIL PROTECTED]> wrote > > is of course an historical feature of old keyboards > > when, to get a hash symbol (#), you had to type a > > pound sign(£), ie shift 3. > > That is a very interesting explanation but I prefer this one: > http://en.wikipedia.org/wiki/Number_sign#Naming_convention_within_the_USA > > # is an abbreviation for 'pound' the weight, not 'pound' the unit > of currency. Interesting indeed. I got my explanation in high school around 1972. It went like this The pound and the dollar were the main currencies in use when Remington introduced the QWERTY keyboard on their early typewriters. The pound sign was Shift-3 and the dollar shift-4. When the US introduced the # symbol (in the early 1920's?) to keyboards they used the pound sign position (because the pound had decreased in usage by then) and the symbol was called the pound sign because that was what was traditionally on the key used. The symbol is called hash is the UK because its derived from the more term cross-hatch, where the symbol is like the cross hatching used for shading when sketching, which in turn is often called hatching. And that was part of our Modern History class and was examinable! :-) An alternative explanation for hash that I've seen is that it relates to cooking where a hash is a meal composed of ingredients cut into cubes and the symbol is remminiscent of the cut lines made when cubing (or hashing) the meat etc. > Of course the correct name for this symbol is 'octothorpe' :-) > http://en.wiktionary.org/wiki/Octothorpe That I would query, the article says the Bell labs folks claim to have coined the term in 1964 but the symbol has been in use for at least a hundred years. Although whether it had an official name up till then I don't know... In fact the name most likely I'd have thought would be "sharp" as in music notation, which is where, I think, it originated. And this is really off-topic now! :-) Alan G. _______ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] python syntax: underscore
Hi,
I was following the thread on about the _("xx") thingy.
Since then I played around a bit with underscores at the console and it
seems to me that if you execute code with a return value but you dont save
the result, then _ is a pointer to this value.
Is that correct?
4
4
print _
4
So if I do this,
_ = 10
4
4
print _
10
What is this _ used for?
If I assign something to the underscore, will it cause strange things to
happen later?
(Just curiosity)
Regards,
--
Michael
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Re: [Tutor] Python / CGI
Hi, If you have your own server to run it on, I think it would make sense to use one of the Python web frameworks that are out there. I used cherrypy for my first web-based python project and I found it very easy to learn and develop in quickly. Regards, Michael On 06/09/07, Fiyawerx <[EMAIL PROTECTED]> wrote: > > Hi guys, quick question, I've been trying to learn python lately, and have > written a few little apps to help with some day to day stuff I do, and > recently my fiance asked me if it was possible to come up with a simple web > based schedule she can use with the other teachers in her school to schedule > library time. (She's the librarian). Basically, it will be a small calendar > like app that will have 'slots' teachers can sign up for. It doesn't sound > like it would be too complicated, and may be a good learning project. I was > wondering if python as cgi would be good for this, and if there are any > pitfalls I need to watch out for before I start delving into it. I'm also > fairly new to writing my own html so will basically be learning it all from > scratch. > > TIA, > Lee McClintock > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > > -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Problem with while loop
You could use string formatting to output all pin numbers as 4 character strings. http://docs.python.org/lib/typesseq-strings.html On 07/09/2007, matte <[EMAIL PROTECTED]> wrote: > > Perfect... > > Thanks very much for your help... > > On 9/7/07, Michael Connors <[EMAIL PROTECTED]> wrote: > > > > I think it will work if you cast your input to an int: > > howmany = int(raw_input( "How many: " )) > > > Now I just need to figure out how to only get 4 digit pin numbers :) > > -m > -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Problem with while loop
I think it will work if you cast your input to an int: howmany = int(raw_input( "How many: " )) On 07/09/2007, matte <[EMAIL PROTECTED]> wrote: > > Hi guys > > Please excuse me but I've been out of Python for a while since my laptop > was stolen... > > I'm battling with a very basic while loop > > -- 8< -- > #!/usr/bin/python > > from random import randint > > counter = 0 > > howmany = raw_input( "How many: " ) > > while counter < howmany: > > pin = randint(,) > print pin > counter += 1 > > -- 8< -- > > For some reason if I use an integer in place of "howmany" it works, but > I'd > like it to work as I can logically see it above. > > What am I missing ? > > -m > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > > -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Problem with while loop
Hi,
I would do it as follows, adding 0s to front to make them valid PINs.
while counter < howmany:
pin = randint(,)
print "%04i" % (pin)
counter += 1
On 10/09/2007, Vishnu Mohan <[EMAIL PROTECTED]> wrote:
>
>
> > Now I just need to figure out how to only get 4 digit pin numbers :)
> >
> Use regular expressions
> The following is the code with re.
>
>
> from random import randint
> import re
>
> counter = 0
> pinPattern = re.compile(r'^\d{4}$')
> howmany = raw_input( "How many: " )
> if pinPattern.match(howmany):
> while counter < int(howmany):
> pin = randint(,)
> print pin
> counter += 1
> else:
> print "%s is not valid 4 digit integer"%howmany
>
>
> -vishnuMohan
>
--
Michael Connors
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Re: [Tutor] interview questions
On 19/01/2008, Varsha Purohit <[EMAIL PROTECTED]> wrote: > > Hello All, >I have an interview in python program development. Can i know some > interview questions in python ? If you know any website where i can refer > that would be helpful. > > thanks, > -- > Varsha Purohit, > Graduate Student > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > > If the company is developing in Python they must think its better than other languages. You should be prepared to answer "Why do you want to work with Python?" and have a clear picture of its pros and cons. The job is probably not all about Python, so don't forget to prepare the other areas you mentioned on your CV. -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] How do I get GASP
> > OK, I'll bite. > What is GASP and why are you asking on a Python mailing list? > > I googled but came up with a mix of anti-smoking devices, > Golf swing improvemt programmes and a small wb site > design outfit among others. > > What are you talking about? This maybe: https://launchpad.net/gasp-code -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Idle
> > It all works up until I need to print five randomly chosen numbers from > the range [1,n]. It tells me that random is not defined. You need to put : import random in your program before doing: y = random.randrange(1,n) or alternatively use: from random import * and call the function as follows: y = randrange(1,n) Regards, -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] decimal precision
On 25/03/2008, elis aeris <[EMAIL PROTECTED]> wrote: > > x = 53 > w = 192 > for a in range ( x, (x+192) ): > print (a-x)/w > > > the problem is at (a-x)/w > > it's supposed to return a ratio between x and w, yet it 0 all the time. > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > > I think to do float division the operands should be floats. So if you do: print float(a-x) / float(w) It should produce a floating point result. -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] decimal precision
On 25/03/2008, elis aeris <[EMAIL PROTECTED]> wrote: > > x = 53 > w = 192 > for a in range ( x, (x+192) ): > print (a-x)/w > > > the problem is at (a-x)/w > > it's supposed to return a ratio between x and w, yet it 0 all the time. > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > > I think to do float division the operands should be floats. So if you do: print float(a-x) / float(w) It should produce a floating point result. -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] decimal precision
On 25/03/2008, elis aeris <[EMAIL PROTECTED]> wrote: > > what if i want it only to 2nd decimal? > > what if i want to cut off everything behind decimal? > In: print "%.2f" % (0.99) Out: 0.99 http://docs.python.org/lib/typesseq-strings.html -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Table like array in Python
On 26/03/2008, Gloom Demon <[EMAIL PROTECTED]> wrote:
>
> Hello :-)
>
> Example (cost of something in different countries by different years)
>
> Record1 US 2006 22.10
> Record2 US 2007 23.45
> Record3 UK 2007 22.90
> ..
> <http://mail.python.org/mailman/listinfo/tutor>
>
>
In Python a list is similiar to an array in Pascal.
You define a list like this: my_list = [1, 2, 3, 4]
However I dont think you want an array here, if I was doing something like
this I would use a dictionary. A dictionary stores keys and values.
So you could do something like this:
records = {'US': {'2007': 22.5, '2008': 44.8}, 'UK': {'2008': 3.4, '2007':
2.6}}
You can now access a particular record as follows:
In: print records['UK']['2007']
Out: 2.6
Regards,
--
Michael Connors
___
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Re: [Tutor] Question
2008/11/10 W W <[EMAIL PROTECTED]> > On Mon, Nov 10, 2008 at 9:40 AM, Alan Gauld <[EMAIL PROTECTED]>wrote: > >> > > What does nano do that vi (or emacs) doesn't? Given that vi is the >> "standard" editor on *nix ity would seem the obvious choice. But everyone >> seems to be using nano? Why? > > > AFAIK, it's a little smaller/faster than emacs... but since I'm a vi(m) > fan, I'm probably the wrong person for the question ;) > > > My guess is that, if you want to provide instructions to someone with no linux/unix experience. e.g. to edit a config file, you can safely tell them to: nano myfile.conf and expect them to be able to save the file and return to the command line. If you want to give the same instructions using vim or emacs, you would also need to specify how to save and exit. I imagine this to be the reason it is popular in tutorials, and if all the tutorials you use, use nano, you will probably use it too. -- Michael Connors ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
