Hi Danny,
>
> [The following note is Python 2.0 specific. In Python 3, input() is
> semantically different, and safe.]
>
> If you are using Python 2.0, don't use the input() function here to
> read strings. It is not safe: backing it is an implicit eval(), and
> eval() is dangerous, especially f
Hi Steve,
>
>> E:\Programs\Python\IYOCGwPy\Ch4>guess.py
>
> Here you are telling Windows to look up the file association for .py files.
> It locates some program, and runs it with guess.py as the argument. Looking
> at the result:
>
>> Hello! What is your name?
>> boB
>> Traceback (most recent cal
On Thu, Apr 25, 2013 at 8:45 AM, Marc Tompkins wrote:
> On Thu, Apr 25, 2013 at 5:40 AM, boB Stepp wrote:
> Remember that input(), in Python 2, executes what's passed to it. If your
> input is boB, then Python tries to execute the statement boB - and unless
> you've
I have found the following book quite helpful and keep it handy:
"Python Pocket Reference" by Mark Lutz, 4th ed., c. 2010.
It was released at the time that 3.0 and 2.6 were the current Python
versions, but tries to include what was intended for the 2.x and 3.x
future releases as he knew them then
At work I use a commercial program for radiation therapy planning.
This program has an extensive built-in, proprietary scripting language
that is accessible to the user. The scripting files are all
text-based. The OS that we are running the commercial software on is
Solaris 10. The scripting langua
On Sun, Apr 28, 2013 at 7:47 PM, Steven D'Aprano wrote:
> On 29/04/13 06:05, boB Stepp wrote:
>>
>> At work I use a commercial program for radiation therapy planning.
>> This program has an extensive built-in, proprietary scripting language
>> that is accessible t
On Sun, Apr 28, 2013 at 4:25 PM, Alan Gauld wrote:
>
> You could build a full GUI builder in Python but that will be a lot of work.
> Is there room for a half way house?
>
I sure hope so!
> I'd suggest building a Python program that reads a resource file (maybe
> using the configparser module a
On Mon, Apr 29, 2013 at 4:16 AM, Alan Gauld wrote:
> On 28/04/13 20:03, boB Stepp wrote:
>>
>> I have found the following book quite helpful and keep it handy:
>>
>> "Python Pocket Reference" by Mark Lutz, 4th ed., c. 2010.
>>
>
> I have an earlie
Alan,
I am at work now, so I will try to reply to those things I can answer
quickly. Today is a full planning day, not a programming day!
On Mon, Apr 29, 2013 at 4:08 AM, Alan Gauld wrote:
>> my situations, it would have to result in the proper window generation
>> with no tweaking.
>
>
> Thats
On Mon, Apr 29, 2013 at 4:08 AM, Alan Gauld wrote:
> On 29/04/13 03:57, boB Stepp wrote:
>
[Major snip]
>
>> Unfortunately in most instances the window would have to be generated
>> at runtime.
>
>
> The whole window? Or just a panel within it?
> If its only fo
The following textbook was just released yesterday on Amazon:
Data Structures and Algorithms in Python
Michael T. Goodrich, Roberto Tamassia, Michael H. Goldwasser
March 2013, ©2013
I was wondering if anyone was familiar with the earlier "market
leading" textbooks in C++ and Java with essentiall
I have been looking through PEP 8--Style Guide for Python Code. It
recommends a maximum line length of 79 characters. What is the
preferred way to continue on another line or lines really long print
functions of string literals (Python 3)? The only thing that
immediately occurs to me is to break up
I was just now playing around in the interpreter trying
print('Hello''world!') thinking I would get a syntax error, only to
discover the kernel of what you show below...
On Tue, Apr 30, 2013 at 9:28 PM, brian arb wrote:
> I really like breaking my long strings like...
>
> And rewrite it like this
On Sun, May 5, 2013 at 6:49 AM, Stafford Baines
wrote:
> I have just finished Python Programming by Michael Dawson. A wonderful book
> with downloadable examples. However, after many hours of frustrating attempts
> I can't get the graphics to work.
>
I own this book, too, but I am not actively
I have been playing around with my own version of a guess the number
game that I wrote before looking at how the kids' book (which I am
reviewing for my kids) did it. For some reason my children are
fascinated by this game and keep asking me for improvements. The
latest one was to implement an auto
On Sun, May 5, 2013 at 7:54 PM, Steven D'Aprano wrote:
> On 06/05/13 10:17, boB Stepp wrote:
>>
[...]
>
> But even on Windows that will not work, if you are running under IDLE. And
> unfortunately there is no official way to tell if you are running under
> IDLE, or any
On Sun, May 12, 2013 at 6:43 AM, Dave Angel wrote:
[...]
> With no experience in programming other languages, you'd need a different
> kind of tutorial than I sought when I was learning Python. And you
> absolutely need to match your tutorial against the version of Python you're
> running on your
On Mon, May 20, 2013 at 11:31 AM, Rafael Knuth wrote:
>
> Hello,
>
> I wrote a simple program, and I was expecting that I would get 100 different
> random numbers. Instead, I am getting 100 times exactly the same random
> number. Can anyone advise how I should alter my program?
>
> Thank you!
>
Okay. Since I first joined this list I have played around (as time
permitted) with these editors/IDEs: PyCharm, Eclipse with PyDev,
Notepad++, Emacs, IDLE, PyScripter, IdleX, Sublime Text, and possibly
others. Of course, I have far from mastered any of them, but I think
that I have a sense of what
On Wed, May 22, 2013 at 7:50 AM, Steven D'Aprano wrote:
> On 22/05/13 15:46, Jim Mooney wrote:
>>
[...]
>
> But don't do this in real code! In real code, the rules you should apply
> are:
>
>
> 1) never hide programming errors by catching exceptions;
>
> 2) errors should only be caught if you ca
On Wed, May 22, 2013 at 8:07 AM, Steven D'Aprano wrote:
> On 22/05/13 16:20, Jim Mooney wrote:
>>>
[...}
> A very important quote from Chris Smith:
>
> "I find it amusing when novice programmers believe their main job is
> preventing programs from crashing. ... More experienced programmers reali
Thanks, Steve, for your last two posts. You have made things much
clearer for me.
On Wed, May 22, 2013 at 9:49 AM, Steven D'Aprano wrote:
> On 22/05/13 23:37, boB Stepp wrote:
>>
>> On Wed, May 22, 2013 at 8:07 AM, Steven D'Aprano
>> wrote:
>>>
[...
On Wed, May 22, 2013 at 9:45 AM, Steven D'Aprano wrote:
> On 22/05/13 23:31, boB Stepp wrote:
>>
>> On Wed, May 22, 2013 at 7:50 AM, Steven D'Aprano
>> wrote:
[...]
>>> 3) your job as a programmer is *not* to stop your program from raising an
&g
On Wed, May 22, 2013 at 8:47 PM, Steven D'Aprano wrote:
> On 23/05/13 02:09, boB Stepp wrote:
>
>> I would like to ask some general questions here. Problems can arise
>> from bugs in the operating system, bugs in the programming language(s)
>> being used, bugs in pack
On Thu, May 23, 2013 at 12:31 PM, Andrew Triplett
wrote:
> I am asked to present text in different ways by using quotes in strings. for
> example:
>
[...]
> I can't however seem to input the text GAME OVER in giant text as it says in
> the book. Any help for this would be appreciated.
>
I'm taki
On Thu, May 23, 2013 at 2:57 PM, Citizen Kant wrote:
> I guess I'm understanding that, in Python, if something belongs to a type,
> must also be a value.
>
> I guess I'm understanding that the reason why 9 is considered a value, is
> since it's a normal form, an element of the system that cannot b
On Tue, May 28, 2013 at 9:34 PM, Steven D'Aprano wrote:
>
> On 28/05/13 13:54, Tim Hanson wrote:
>>
>
> However, a word of warning: although you *can* assemble a new string
> character by character like that, you should not, because it risks being very
> slow. *Painfully* slow. If you want to h
On Wed, May 29, 2013 at 11:07 AM, Oscar Benjamin
wrote:
> On 29 May 2013 16:38, boB Stepp wrote:
>> On Tue, May 28, 2013 at 9:34 PM, Steven D'Aprano wrote:
>>>
>>> However, a word of warning: although you *can* assemble a new string
>>> character by cha
On Fri, Aug 29, 2014 at 2:17 PM, Derek Jenkins wrote:
> Hi everybody,
>
> I have a list that I want to go through and finally print a total
> count of particular items. In this case, I want to print the result of
> how many A's and B's are in the list.
>
> honor_roll_count = 0
> student_grades = [
On Sun, Aug 31, 2014 at 7:12 PM, Juan Christian
wrote:
> I've been using PyCharm to code in Python but it seems a bit "overpowered"
> for this task, and there are some annoying bugs. I used Sublime Text 2 in
> the past, but it seems to be dead now (last update was JUN/2013), so I don't
> really kn
On Tue, Sep 9, 2014 at 7:27 AM, Mirage Web Studio wrote:
>
> Hello,
>
> I am not an advanced programmer, but am very good with keyboard and find
> using tabs for syntax and formatting very helpful. But in this list and
> other python documentation i have repeatedly seen people recommending
> use o
On Fri, Oct 3, 2014 at 4:27 PM, Rob Ward wrote:
> i downloaded the 3.4 version of python but there is no matching binary file
> for pygame ive tried every 1.9.1 file and still cant import pygame would an
> older version of python work
>
If you have windows try: http://www.lfd.uci.edu/~gohlke/pyth
About two years ago I wrote my most ambitious program to date, a
hodge-podge collection of proprietary scripting, perl and shell files
that collectively total about 20k lines of code. Amazingly it actually
works and has saved my colleagues and I much time and effort. At the
time I created this mess
On Wed, Oct 8, 2014 at 10:02 AM, Joel Goldstick
wrote:
[...]
> It looks like you have csv like data. Except you have a semicolon as
> a separator. Look at the csv module. That should work for you
>
Joel, will the labels (like SERIAL_ROI:) cause me difficulties? I will
need to strip these off
On Wed, Oct 8, 2014 at 11:27 AM, Alan Gauld wrote:
> On 08/10/14 16:47, boB Stepp wrote:
>
>>> It looks like you have csv like data. Except you have a semicolon as
>>> a separator. Look at the csv module. That should work for you
>>>
>> Joel, will
On Wed, Oct 8, 2014 at 2:19 PM, Martin A. Brown wrote:
>
> Good afternoon,
>
>>> If its not too big a task you could even convert the data
>>> structure to JSON which is quite a close match to what you
>>> have now and the json module will help you read/write
>>> to them.
Looking at some examples
I am hoping to save other people the grief I just worked through. I
wanted to run both Python 2 and 3 on my windows PC, and, after
googling this topic found that with Python 3.3 or later one could
easily do both. So I merrily installed Python 3.4.2 first and then
Python 2.7.8. A Python 3 program th
On Fri, Oct 10, 2014 at 2:05 AM, Wolfgang Maier
wrote:
> On 10/10/2014 05:57 AM, boB Stepp wrote:
>>
>> I am hoping to save other people the grief I just worked through. I
>> wanted to run both Python 2 and 3 on my windows PC, and, after
>> googling this topic found th
On Fri, Oct 10, 2014 at 7:43 AM, boB Stepp wrote:
> On Fri, Oct 10, 2014 at 2:05 AM, Wolfgang Maier
> wrote:
>> On 10/10/2014 05:57 AM, boB Stepp wrote:
[...]
>>
>> It would help if you could share details about how you tried to run the
>> Python 3 program (c
On Fri, Oct 10, 2014 at 11:54 PM, Zachary Ware
wrote:
> On Fri, Oct 10, 2014 at 11:34 PM, boB Stepp wrote:
>> I can live with 2.7.8 being the default Python, but if I wanted to
>> make 3.4.2 the default, how would I go about doing it?
>
> Check the output of "ftype
On Sat, Oct 11, 2014 at 12:24 AM, boB Stepp wrote:
> On Fri, Oct 10, 2014 at 11:54 PM, Zachary Ware
> wrote:
>> On Fri, Oct 10, 2014 at 11:34 PM, boB Stepp wrote:
>>> I can live with 2.7.8 being the default Python, but if I wanted to
>>> make 3.4.2 the default,
I am reading a brief intro to exception handling in Mark Summerfield's
"Programming in Python 3, 2nd ed." He gives the basic syntax as:
try:
try_suite
except exception1 as variable1:
exception_suite1
...
except exceptionN as variableN:
exception_suiteN
My current understanding is that
On Thu, Oct 23, 2014 at 10:57 PM, Danny Yoo wrote:
>
> > I have so far been unable to find a list of these class/subclass names. Of
> > course I can force an error to occur in the interpreter and see what comes
> > up for each type of error I wish to catch. Is there such a table or list?
> >
>
> H
On Thu, Oct 23, 2014 at 11:04 PM, Ben Finney wrote:
> boB Stepp writes:
>
[...]
>
>> I have so far been unable to find a list of these class/subclass
>> names.
>
> The standard library documentation's chapter on exceptions
> https://docs.python.org/3/lib
OS: Solaris 10. Python: 2.4.4 on the computer I will be doing my
development work. 2.6.4 on the production environment.
I am working on my first python program at work to automate a set of
tasks that allows for the results of a radiotherapy plan to be
compared to a set of constraints that the plan
On Tue, Nov 18, 2014 at 9:47 AM, Alan Gauld wrote:
[...]
> You can roll your own password system using the crypt module.
> Get each user to create a password (or give them a default) and
> encrypt it with crypt. Store the result and when they log in
> compare the encrypted password with the stored
Python 2.7.8
Win7Pro
>>> str = "0123456789"
>>> str[-1]
'9'
>>> str[-3:-1]
'78'
>>> str[-3:]
'789'
I understand that the above is "the way it is" in Python, but I am
puzzled why the designers did not choose that str[-3:-1] returns
'789', especially since str[-1] returns '9'. What is the reason fo
On Mon, Nov 24, 2014 at 12:57 PM, Zachary Ware
wrote:
[...]
>
> Have I clarified or muddied it for you? :)
Clarified, I believe, if my following statements are correct: I did
not consider that the behavior was symmetric with positive indices.
So, index 0 is the "center" relative to which positive
On Mon, Nov 24, 2014 at 1:06 PM, boB Stepp wrote:
> On Mon, Nov 24, 2014 at 12:57 PM, Zachary Ware
> wrote:
> [...]
>>
>> Have I clarified or muddied it for you? :)
>
> Clarified, I believe, if my following statements are correct: I did
> not consider that t
Python 2.4.4
Solaris 10
I can accomplish this by getting the screen height and width and
calculating pixel coordinates. But so far I have not found something
equivalent to anchor = 'CENTER' that can be applied to the root
window. Does such an easy attribute, method, or whatever exist in
Tkinter?
Python 2.4.4
Solaris 10
--
boB
___
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
https://mail.python.org/mailman/listinfo/tutor
On Wed, Nov 26, 2014 at 11:25 AM, Alan Gauld wrote:
> On 26/11/14 16:48, boB Stepp wrote:
>>
>> Python 2.4.4
>> Solaris 10
>
>
> I can't find anything on this and I suspect that's because
> title bar colour is generally part of the user's preferre
On Wed, Nov 26, 2014 at 11:23 AM, Alan Gauld wrote:
> On 26/11/14 16:46, boB Stepp wrote:
>
>> I can accomplish this by getting the screen height and width and
>> calculating pixel coordinates. But so far I have not found something
>> equivalent to anchor = 'CENTE
On Wed, Nov 26, 2014 at 11:50 AM, Alan Gauld wrote:
> On 26/11/14 17:44, boB Stepp wrote:
>
[...]
> So they can't read email, write reports, browse web sites?
> And what if the OS or sysadmin is also trying to catch their eye - maybe
> because the server is going down and
On Wed, Nov 26, 2014 at 11:58 AM, Alan Gauld wrote:
> On 26/11/14 17:39, boB Stepp wrote:
>
[...]
>> The application I am attempting to write will show up in the
>> foreground of our planning software. This planning software has its
>> own color scheme, which all
Python 2.4.4
Solaris 10
#!/usr/bin/env python
from Tkinter import *
def printLabel():
print "Button number ", var.get(), " was pressed."
print "You selected this option:", l[var.get() - 1][0]
root = Tk()
root.title("ROI List Creator")
root.geometry(newGeometry='225x230+900+300')
root.tk
On Wed, Nov 26, 2014 at 6:20 PM, Steven D'Aprano wrote:
> On Wed, Nov 26, 2014 at 05:23:40PM -0600, boB Stepp wrote:
[...]
>> First question: How can the printLabel() function see the list
>> variable, l, defined outside of this function? I thought that
>> functions on
On Thu, Nov 27, 2014 at 4:51 AM, Alan Gauld wrote:
> On 27/11/14 04:18, boB Stepp wrote:
[...]
>> So any variables lower in the program are accessible to those above it?
>
>
> No.
> Its not whether they are defined above or below each other its the level of
> inden
On Thu, Nov 27, 2014 at 4:56 AM, Steven D'Aprano wrote:
> On Wed, Nov 26, 2014 at 10:18:55PM -0600, boB Stepp wrote:
>
>> So any variables lower in the program are accessible to those above it?
>
> No, that can't be the explanation. Think of this:
>
> b = a + 1
On Thu, Nov 27, 2014 at 9:33 AM, Steven D'Aprano wrote:
> On Thu, Nov 27, 2014 at 09:00:48AM -0600, boB Stepp wrote:
[...]
> But there is a subtlety that you may not expect:
>
> py> class Tricky:
> ... print(x)
> ... x = "inner"
> ... print(x
On Thu, Nov 27, 2014 at 9:58 AM, Steven D'Aprano wrote:
> On Wed, Nov 26, 2014 at 12:25:23PM -0600, boB Stepp wrote:
>
>> As I am the only person in our
>> group with any programming knowledge (weak though it is), this means I
>> usually wind up trying to solve issue
On Nov 27, 2014 1:27 PM, "Dave Angel" wrote:
>
> On 11/27/2014 11:39 AM, boB Stepp wrote:
>>
>> On Thu, Nov 27, 2014 at 9:58 AM, Steven D'Aprano
wrote:
>
>
>
> You say you're using some 3rd party package to do the heavy lifting. But
you also s
On Thu, Dec 18, 2014 at 8:09 PM, Brandon Dorsey wrote:
>
> Hello All,
>
> Programming has always been a passion of mine, however, I'm frequently
> frustrated at
>
> simple fact that I've been learning python for 8 months, and I have yet to
> start, and finish, a simple
>
> project. I find difficu
It appears that Michael only sent this to me when I think he meant to send
it to the list...
-- Forwarded message --
From: "Michael Shiloh"
Date: Dec 21, 2014 7:25 PM
Subject: Re: [Tutor] Learning to program, not code. [LONG RESPONSE!]
To: "boB Stepp"
Cc:
&g
On Sun, Jan 4, 2015 at 8:39 PM, Steven D'Aprano wrote:
[...]
>
>> 2. Have a look at this code fro the book and tell me what to improve
>> (This is a program where it says game over, and it waits for the user
>> to press the enter key to quit:
>>
>> print(“Game Over”)
>> input(“\n\nPress the enter
And will this vary depending on whether a version control system is
being used or not? Or is the use of a version control system
considered to be highly recommended (if not mandatory)?
--
boB
___
Tutor maillist - Tutor@python.org
To unsubscribe or cha
On Thu, Jan 22, 2015 at 5:25 PM, Ben Finney wrote:
> boB Stepp writes:
>
>> And […]
>
> Could you write a message body that asks the question? (The Subject
> field isn't part of the message body.)
Does the Python way of doing things have a definite preference for th
On Thu, Jan 22, 2015 at 5:45 PM, Steven D'Aprano wrote:
> On Thu, Jan 22, 2015 at 03:17:58PM -0600, boB Stepp hid the following
> question in the subject line:
>
> "Does the Python way of doing things have a definite preference for the
> structure and content of pro
On Wed, Feb 4, 2015 at 6:12 PM, Antonio Zagheni
wrote:
> Hi there,
>
> I am a begginer in python and I'm trying to learn something about Tkinter.
>
> I did a game (the code is below) using Tkinter were two players have to fill
> a row, a column or a diagonal with either 'X' or 'O'.
> When it happ
Python 2.4.4, Solaris 10.
a_list = [item1, item2, item3]
for item in a_list:
print 'Item number', ???, 'is:', item
Is there an easy, clever, Pythonic way (other than setting up a
counter) to replace ??? with the current index of item in a_list?
--
boB
___
On Thu, Feb 5, 2015 at 11:45 AM, Zachary Ware
wrote:
> On Thu, Feb 5, 2015 at 11:30 AM, boB Stepp wrote:
>> Python 2.4.4, Solaris 10.
>>
>> a_list = [item1, item2, item3]
>> for item in a_list:
>> print 'Item number', ???, 'is:', item
>
On Thu, Feb 5, 2015 at 11:48 AM, Alan Gauld wrote:
> On 05/02/15 17:30, boB Stepp wrote:
>>
>> Python 2.4.4, Solaris 10.
>>
>> a_list = [item1, item2, item3]
>> for item in a_list:
>> print 'Item number', ???, 'is:', item
>>
&
On Thu, Feb 5, 2015 at 12:25 PM, Mark Lawrence wrote:
>
> We're now at 3.4 with 3.5 close to its first alpha release, so any
> particular reason that even 2.6 doesn't seem relevant to you? No axe to
> grind, just plain old fashioned curiosity :)
>
We are not allowed to install or upgrade software
Python 2.4.4, Solaris 10
I have a file of functions. Based on what is read in a data file,
different functions in the file of functions will need to be called. I
have been trying to make the following approach work, so far
unsuccessfully as, in general, each function may have a different
number of
On Wed, Feb 11, 2015 at 8:44 AM, eryksun wrote:
> On Wed, Feb 11, 2015 at 7:27 AM, boB Stepp wrote:
>>
>> pass_args = {'a': (x1, x2, x3), 'b': (y1, y2), 'c': (z)}
>> call_fcn[key_letter](key_letter)
>>
>> But ran into the syntax e
On Wed, Feb 11, 2015 at 8:45 AM, Dave Angel wrote:
> On 02/11/2015 08:27 AM, boB Stepp wrote:
[...]
>
> Sure, it's viable, but the best approach depends on your goal (use case),
> and your restrictions. Are these functions really totally unrelated to each
> other? You not
On Wed, Feb 11, 2015 at 10:58 AM, Dave Angel wrote:
> On 02/11/2015 10:29 AM, boB Stepp wrote:
>>
>> On Wed, Feb 11, 2015 at 8:45 AM, Dave Angel wrote:
>>>
>>> On 02/11/2015 08:27 AM, boB Stepp wrote:
[...]
>>> In each case, there are probably better
I have heard periodically about the potential evils of using exec()
and eval(), including today, on this list. I gather that the first
requirement for safely using these functions is that the passed
argument MUST be from a trusted source. So what would be examples
where the use of these functions
x27;t want to say too much for
those working through this book, but the essence of the issue is
illustrated by the following:
Python 3.4.2 (v3.4.2:ab2c023a9432, Oct 6 2014, 22:16:31) [MSC v.1600
64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more inform
did, you leave no
spaces between the last backslash and the EOL termination characters,
then the problem behavior occurs. Actually, I realize I have a
question:
If I do the following in the Win7 command line Python interpreter:
Python 3.4.2 (v3.4.2:ab2c023a9432, Oct 6 2014, 22:16:31) [MSC v.1600 64
On Tue, Feb 17, 2015 at 1:47 PM, Dave Angel wrote:
> On 02/17/2015 02:12 PM, boB Stepp wrote:
>
> See
> https://docs.python.org/3.4/reference/lexical_analysis.html#string-and-bytes-literals
>>
>>
>> At this point in the text he is not talking about raw literal strin
On Tue, Feb 17, 2015 at 3:05 PM, boB Stepp wrote:
> This seems to be the case. On a related note, I wanted to copy and
> paste the author's source code, showing how he generated the large,
> "Game Over", but my Gmail keeps collapsing the white space, making the
> res
On Tue, Feb 17, 2015 at 3:34 PM, Joel Goldstick
wrote:
> On Tue, Feb 17, 2015 at 4:05 PM, boB Stepp wrote:
>> On Tue, Feb 17, 2015 at 1:47 PM, Dave Angel wrote:
>>> On 02/17/2015 02:12 PM, boB Stepp wrote:
>> This seems to be the case. On a related note, I wanted
Hopefully this is not a touchy subject like Emacs vs. Vim. ~(:>))
My home PC uses Win7-64bit. I currently use Chrome, Gmail and have a
Nexus 5 phone. The nice thing about all of this is that all of my
information usually seamlessly syncs. That is nice! But I am getting
increasingly frustrated with
On Wed, Feb 18, 2015 at 9:24 AM, James Chapman wrote:
> One of my pet hates about this list... "This is a tutor list, your question
> is out of scope". Sure there might be better places to seek answers, and
> sure maybe the first responder doesn't know the answer, but that's not a
> reason to resp
On Wed, Mar 4, 2015 at 12:04 PM, Alan Gauld wrote:
> On 04/03/15 15:40, niyanax...@gmail.com wrote:
>>
>> Need help trying to implement insert, remove, indexof, and reverse
>> functions.
>>
>> I tried to do them but am not sure if it is correct. I am struggling with
>> arrays.
>
>
> I;m not sure w
On Wed, Mar 4, 2015 at 7:53 PM, Phil wrote:
> I hope this is not another embarrassingly obvious answer to a simple
> question.
>
> Python 3, under Kubuntu.
>
> xrange() fails whereas range() is accepted. Could this be an installation
> problem?
> etc
This may fall into the obvious answer. ~(:>))
Thank you very much Alan and Steve for your detailed answers. You
have clarified many things and sent me off searching for more
information on variant records, tagged and untagged unions, sparse
arrays, linked lists, how memory allocation is affected by these
topics and some other items.
And I wo
On Fri, Mar 6, 2015 at 12:27 PM, Markos wrote:
> Hi,
>
> I'm beginning to study the numpy.
>
> When I open a terminal (Debian Squeeze) and run the python interpreter the
> command "import numpy as np" run without errors.
>
> But when I run the same command on idle3 the following error appears.
>
>
On Mon, Mar 16, 2015 at 11:13 PM, Nick Nguyen
wrote:
>
> Hi,
> I use python 3.4.3.
> I'm using print function with triple quote, as I understand all the character
> will be printed as exactly within the triple quote, even with the backslash
> character. However as you see in the RESULT printout,
I hope extolling the beauty and power of Python on this list is
allowed, because I have had a large "WOW!!!" moment tonight. I had a
problem I was working on at work this afternoon. I have a list of ~
10,000 floating point numbers, which run from largest to smallest.
There are duplicates scattered
I'm still working in the procedural paradigm of programming. Hopefully
I will find time for OOP soon. But in some of my
modules-in-progress,my collection of functions has gotten large enough
that I feel I need to bring some sort of order to their positioning.
Currently my best thought is to mimic t
On Thu, Mar 19, 2015 at 12:10 AM, Dave Angel wrote:
> The catch to a list comprehension is it has to visit all the elements, while
> a binary search would visit log-base-2 of them. So instead of 1
> elements, you'd be searching about 14 items.
I suspected as much, but had not verified this.
On Thu, Mar 19, 2015 at 4:52 AM, Peter Otten <__pete...@web.de> wrote:
> Dave Angel wrote:
[...]
> By the way, if you were to use a plain old loop the expected speedup over
> the listcomp would be 2. You can break out of the loop when you have found
> the gap, after iterating over one half of the
I am puzzled by the following:
Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:44:40) [MSC v.1600
64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> a_list = [5, 0, 2, 4, 1]
>>> print(a_list.sort())
None
>>> print(a_list)
[0, 1, 2, 4, 5]
>>>
I expecte
On Sun, Mar 29, 2015 at 1:00 AM, Cameron Simpson wrote:
> The former print:
>
> print(a_list.sort())
>
> is printing the result of "a_list.sort()".
>
> Like most Python functions that operate on something (i.e. .sort, which
> sorts the list in place), the .sort method returns None. And that is
>
On Sun, Mar 29, 2015 at 2:53 AM, Alan Gauld wrote:
> On 29/03/15 07:00, Cameron Simpson wrote:
>
>> print(a_list.sort())
>>
>> is printing the result of "a_list.sort()".
>>
>> Like most Python functions that operate on something (i.e. .sort, which
>> sorts the list in place), the .sort method re
The following behavior has me stumped:
Python 2.7.8 (default, Jun 30 2014, 16:03:49) [MSC v.1500 32 bit
(Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> L = ['#ROI:roi_0', '#TXT:text_0', '#1:one^two^three']
>>> for i, item in enumerate(L):
subitems = i
On Tue, Mar 31, 2015 at 3:28 PM, Zachary Ware
wrote:
> On Tue, Mar 31, 2015 at 3:23 PM, boB Stepp wrote:
>> The following behavior has me stumped:
>>
>> Python 2.7.8 (default, Jun 30 2014, 16:03:49) [MSC v.1500 32 bit
>> (Intel)] on win32
>> Type "copyrig
On Tue, Mar 31, 2015 at 3:32 PM, Dave Angel wrote:
> On 03/31/2015 04:23 PM, boB Stepp wrote:
>>
>> The following behavior has me stumped:
>>
>> Python 2.7.8 (default, Jun 30 2014, 16:03:49) [MSC v.1500 32 bit
>> (Intel)] on win32
>> Type "copyright&quo
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