Re: [Tutor] CSV - sqlite tables with foreign keys

2012-10-17 Thread Hugo Arts
On Wed, Oct 17, 2012 at 5:59 AM, Monte Milanuk memila...@gmail.com wrote: Hello, I'm working on a python script to take the sql script, create a sqlite3 database, create the tables, and then populate them using the info from the csv file. The sticking point seems to be creating the foreign

Re: [Tutor] Tutor Digest, Vol 104, Issue 65

2012-10-17 Thread Osemeka Osuagwu
On Tue, 16 Oct 2012 10:30:54 +0100 Alan Gauld wrote Yes but then it wouldn't be OOP. You'd be back in the world of traditional procedural programming passing explicit data references around. Its much better to make it an instance method with the self reference being passed implicitly I

[Tutor] Why VPython can't be searched out in PyPI?

2012-10-17 Thread Dae James
I found that VPython is not in PyPI(python packet index from www.python.org). Why ? Dae James___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor

Re: [Tutor] Why VPython can't be searched out in PyPI?

2012-10-17 Thread Mark Lawrence
On 17/10/2012 09:23, Dae James wrote: I found that VPython is not in PyPI(python packet index from www.python.org). Why ? Dae James The author(s) have chosen not to place it there. -- Cheers. Mark Lawrence. ___ Tutor maillist -

Re: [Tutor] managing memory large dictionaries in python

2012-10-17 Thread Mark Lawrence
On 17/10/2012 03:22, Alexander wrote: On Tue, Oct 16, 2012 at 20:43 EST, Mark Lawrence breamore...@yahoo.co.uk wrote: For the record Access is not a database, or so some geezer called Alex Martelli reckons http://code.activestate.com/lists/python-list/48130/, so please don't shoot the

Re: [Tutor] CSV - sqlite tables with foreign keys

2012-10-17 Thread eryksun
On Tue, Oct 16, 2012 at 11:59 PM, Monte Milanuk memila...@gmail.com wrote: address = list(row) address.append(person) row = tuple(address) The rows from the csv.reader are already lists. Also, the parameter list in the 2nd argument only needs to be a sequence (e.g.

Re: [Tutor] Why difference between printing string typing its object reference at the prompt?

2012-10-17 Thread Dwight Hutto
If your app has a standard usage of phrases, you can place a file in that translates a tag into a particular language phrase. if submit_tag_selection == 'english': submit = 'Submit' if submit_tag_selection == 'english': submit = 'Soumettre' Of course this could be done without the

Re: [Tutor] modulo

2012-10-17 Thread Dwight Hutto
__ I'm not a professional programmer, so I might be way off base here. You mean you haven't dealt with this subject yet... But what I like about Pythons modulo solution is that I can use it to right and left shift in lists or tuples, and I will link

Re: [Tutor] managing memory large dictionaries in python

2012-10-17 Thread Dwight Hutto
On Tue, Oct 16, 2012 at 12:57 PM, Abhishek Pratap abhishek@gmail.com wrote: Hi Guys For my problem I need to store 400-800 million 20 characters keys in a dictionary and do counting. This data structure takes about 60-100 Gb of RAM. I am wondering if there are slick ways to map the

[Tutor] Python Error

2012-10-17 Thread Benjamin Lee
Hello, I am using python to calculate distances across the cell.  I used this command:  python calculate_distances.py This was the response: Traceback (most recent call last): file calculate_distances.py line 4, in module import celltool.simple_interface as si ImportError: No module named

[Tutor] program for a problem

2012-10-17 Thread Tharuni Dheeraj
please send me the program for the following que: Write a program that asks the user for a dollar amount.It then reports the corresponding number of euros by using the current exchange rate. -- Regards, Tharuni Dheeraj ___ Tutor maillist -

Re: [Tutor] modulo

2012-10-17 Thread Jan Karel Schreuder
On Oct 7, 2012, at 8:06 PM, Dave Angel d...@davea.name wrote: On 10/07/2012 08:00 PM, Jan Karel Schreuder wrote: On Oct 7, 2012, at 7:24 PM, Dave Angel d...@davea.name wrote: It still makes no sense to me. There are at least two equally silly ways to define the results of a

[Tutor] Consecutive Sequence

2012-10-17 Thread syed zaidi
Hi,I am trying to develop a python code that takes a character string as input and finds for the occurrence of letters that are occurring thrice or more consecutively.For E.g. a = 'ataattaaacagagtgagcagt'In the output I want a list of those characters that are occuring thrice or more.

[Tutor] Python incrementing problem

2012-10-17 Thread Stephen Hooker
Hello, I'm using Python 2.6 to generate switch lists for a model railroad. I had some help before, possibly from this site but have encountered another problem. I realise the code could be better written, but learning Python is a work in progress. The program works much as expected except when I

Re: [Tutor] Tutor Digest, Vol 104, Issue 69

2012-10-17 Thread Cheng
tutor-requ...@python.org编写: Send Tutor mailing list submissions to tutor@python.org To subscribe or unsubscribe via the World Wide Web, visit http://mail.python.org/mailman/listinfo/tutor or, via email, send a message with subject or body 'help' to tutor-requ...@python.org

Re: [Tutor] Python incrementing problem

2012-10-17 Thread eryksun
On Thu, Oct 11, 2012 at 3:29 PM, Stephen Hooker sct...@googlemail.com wrote: I try to store 1 result it works fine. If I try to store more than 1 result I get one or the other, never both. The code is below (not the whole program) for i in range(2): pos =

Re: [Tutor] Why VPython can't be searched out in PyPI?

2012-10-17 Thread Steven D'Aprano
On 17/10/12 19:23, Dae James wrote: I found that VPython is not in PyPI(python packet index from www.python.org). Why ? You'd have to ask the author of VPython. Being on PyPI is not compulsory, nobody is going to force him to use PyPI if he doesn't want to. -- Steven

Re: [Tutor] program for a problem

2012-10-17 Thread Mark Lawrence
On 08/10/2012 16:55, Tharuni Dheeraj wrote: please send me the program for the following que: Write a program that asks the user for a dollar amount.It then reports the corresponding number of euros by using the current exchange rate. -- Regards, Tharuni Dheeraj

Re: [Tutor] managing memory large dictionaries in python

2012-10-17 Thread Steven D'Aprano
On 17/10/12 12:30, Dwight Hutto wrote: My inexperienced advice would be to begin with the storage areas available. I would begin by eliminating certain things such as: x = {'one_entry' : 1} into x = {'one_entry':1} Those two entries are exactly the same. The presence of absence of spaces,

Re: [Tutor] Consecutive Sequence

2012-10-17 Thread Dave Angel
On 10/13/2012 07:02 AM, syed zaidi wrote: Hi,I am trying to develop a python code that takes a character string as input and finds for the occurrence of letters that are occurring thrice or more consecutively.For E.g. a = 'ataattaaacagagtgagcagt'In the output I want a list of those

Re: [Tutor] Python Error

2012-10-17 Thread Dave Angel
On 10/05/2012 11:55 PM, Benjamin Lee wrote: Hello, I am using python to calculate distances across the cell. I used this command: python calculate_distances.py This was the response: Traceback (most recent call last): file calculate_distances.py line 4, in module import

Re: [Tutor] Consecutive Sequence

2012-10-17 Thread eryksun
On Wed, Oct 17, 2012 at 8:02 AM, Dave Angel d...@davea.name wrote: Is this a homework assignment where you might be expected to build a complex loop, or is it a problem you're solving where you would be allowed to use itertools.groupby ? May as well post a groupby solution. I doubt it would

Re: [Tutor] CSV - sqlite tables with foreign keys

2012-10-17 Thread Monte Milanuk
Thanks for the help! Not sure why I assumed that csv.reader was returning row as a tuple instead of a list... that makes that part easier ;) As for the 'INSTEAD OF' trigger on a VIEW... that *does* look pretty handy. I was trying to remember why I hadn't heard of that before, or why I hadn't

Re: [Tutor] program for a problem

2012-10-17 Thread bob gailer
On 10/8/2012 11:55 AM, Tharuni Dheeraj wrote: please send me the program for the following que: Write a program that asks the user for a dollar amount.It then reports the corresponding number of euros by using the current exchange rate. As the list name (Tutor) suggests we are here to help

Re: [Tutor] Tutor Digest, Vol 104, Issue 69

2012-10-17 Thread Alan Gauld
On 17/10/12 11:29, Cheng wrote: I couldn't see any comment or question in there. When posting could you please follow the instructions: When replying, please edit your Subject line so it is more specific than Re: Contents of Tutor digest... And also delete any irrelevant content. It makes

Re: [Tutor] Thread question

2012-10-17 Thread Steven D'Aprano
Mike, A brief comment before I start: your post would be a lot more readable and understandable if you were to break it up into smaller paragraphs, each of which explains one point. Otherwise it is a great wall of text which is fairly intimidating. On 18/10/12 06:51, Mike wrote: My program

[Tutor] Objects, object references, object values and memory addresses

2012-10-17 Thread boB Stepp
From Programming in Python 3, 2nd edition (p. 22-23): a = [Retention, 3, None] b = [Retention, 3, None] a is b False b = a a is b True My current understanding is as follows: On the first two lines, two separate objects are defined, stored in two separate blocks of memory. These two objects

Re: [Tutor] Objects, object references, object values and memory addresses

2012-10-17 Thread Dave Angel
On 10/17/2012 11:41 PM, boB Stepp wrote: From Programming in Python 3, 2nd edition (p. 22-23): a = [Retention, 3, None] b = [Retention, 3, None] a is b False b = a a is b True My current understanding is as follows: On the first two lines, two separate objects are defined, stored in