On Thu, 5 Oct 2017 03:54 pm, Stefan Ram wrote:
> Steve D'Aprano writes:
>>In actual annihilation events, there is (as far as I know)
>>generally a single real photon produced
>
> »There are only a very limited set of possibilities for
> the final state. The most probable is the creat
Op 2017-10-04, Paul Moore schreef :
> On 4 October 2017 at 16:08, Steve D'Aprano wrote:
>> On Wed, 4 Oct 2017 08:19 pm, Thomas Nyberg wrote:
>>
>>> Hello,
>>>
>>> I was wondering if anyone here knew of any python libraries with
>>> interfaces similar to the bzip2 module which is also multithreaded
On Thursday, October 5, 2017 at 4:22:26 AM UTC+1, Steve D'Aprano wrote:
> On Thu, 5 Oct 2017 01:21 pm, Stefan Ram wrote:
>
> >>- Germany was the aggressor in World War 2;
> >>- well, Germany and Japan;
> >>- *surely* it must be Germany, Italy and Japan;
> >
> > This listing style reminds me of
On Wed, 4 Oct 2017 11:46 pm, Rhodri James wrote:
> On 04/10/17 12:07, bartc wrote:
>> I've seen that example brought up before. It still doesn't cut any ice.
>>
>> You might as well be condescending of someone who finds Joyce or Proust
>> unreadable, and prefers McBain, Simenon or Chandler. (Sorr
On 5 October 2017 at 14:22, Steve D'Aprano
wrote:
> The A and E in the word "are" are not vowels, since they are silent. The U
> in "unicorn" and "university" are not vowels either, and if you write "an
> unicorn" you are making a mistake.
>
There are dialects of English where the "u" in unicorn
Op 2017-10-05, Ben Finney schreef :
> Christopher Reimer writes:
>
>> How do I determine the lowest version of Python to [declare that my
>> code supports]?
>
> You can determine that by installing all the Python versions you want to
> try, and running your code's unit test suite on each of them.
Christopher Reimer writes:
> How do I determine the lowest version of Python to [declare that my
> code supports]?
You can determine that by installing all the Python versions you want to
try, and running your code's unit test suite on each of them.
Those versions where the unit test suite fail
On Oct 4, 2017, at 3:49 AM, Leam Hall wrote:
>
> Folks on IRC have suggested using virtualenv to test code under different
> python versions. Sadly, I've not found a virtualenv tutorial I understand.
> Anyone have a link to a good one?
>
> The next step will be to figure out how to package a p
On Thu, 5 Oct 2017 02:54 pm, Chris Angelico wrote:
> On Thu, Oct 5, 2017 at 2:22 PM, Steve D'Aprano
> wrote:
>> It is, I think, an example of a stupid English language folklore that
>> people repeat unthinkingly, even though the counter-examples are obvious
>> and common. Like "I before E except
On Thu, 5 Oct 2017 04:00 am, Paul Moore wrote:
> I wonder - would the people who want "real constants" find the
> following confusing:
>
from demo import foo
foo = 14
foo
> 14
>
> It's fundamental to the way the import function works, and how names
> in Python behave, but I can s
On Thu, 5 Oct 2017 02:14 pm, Stefan Ram wrote:
> Chris Angelico writes:
>>You can get through a lot of life believing that mass is conserved,
>>but technically it is not, as can be proven.
>
> Well, in fact, it is conserved.
It certainly is not. The whole point of Einstein's equation E = mc²
On Thu, 5 Oct 2017 02:54 pm, Chris Angelico wrote:
> On Thu, Oct 5, 2017 at 2:22 PM, Steve D'Aprano
> wrote:
[...]
>> In the East, while Japan did take the first overtly military action against
>> the US, the US had (in some sense) first engaged in hostile behaviour
>> against Japan by unilatera
HI
Looking for suggestions around json libraries. with Python. I am looking for
suggestions around a long term solution to store and query json documents
across many files.
I will be accessing an api and downloading approx 20 json files from an api a
week. Having downloaded this year I have ov
On Thu, Oct 5, 2017 at 2:22 PM, Steve D'Aprano
wrote:
> It is, I think, an example of a stupid English language folklore that people
> repeat unthinkingly, even though the counter-examples are obvious and common.
> Like "I before E except after C", which is utter rubbish.
That's because it's only
On Thu, 5 Oct 2017 01:36 pm, Stefan Ram wrote:
> Steve D'Aprano writes:
>>If you were teaching people to drive a car, would you insist on teaching
>>them how to pull out and rebuild the engine before sitting them in the
>>drivers seat?
>
> If I would have to teach people to drive a car, I woul
On Thu, 5 Oct 2017 01:21 pm, Stefan Ram wrote:
> Steve D'Aprano writes:
>>At various stages of education, we teach many lies-to-children, including:
>
> Many of those lies can be perfectly true in some sense.
Well of course, that's the whole point of them being "lies-to-children". In
fact, on
On Thu, Oct 5, 2017 at 1:48 PM, wrote:
> Hi Everyone,
>
> I now do need to re-compile the Python 2.7 with VisualStudio 2012.
> Can anyone here kindly give me any help? I appreciate any kind of help:
> hints, learning sources, or ideally show me some instructions :(.
>
> Thank you.
This is not g
On 2017-10-05 03:23, Christopher Reimer wrote:
Greetings,
I've always installed the latest and greatest version of Python 3 to develop my
own programs. I'm planning to release a program to the public. I could toss in
a note that the program runs on the latest version of Python 3.6 but I haven'
Hi Everyone,
I now do need to re-compile the Python 2.7 with VisualStudio 2012.
Can anyone here kindly give me any help? I appreciate any kind of help: hints,
learning sources, or ideally show me some instructions :(.
Thank you.
--
https://mail.python.org/mailman/listinfo/python-list
On Thu, Oct 5, 2017 at 1:21 PM, Stefan Ram wrote:
> Steve D'Aprano writes:
>>At various stages of education, we teach many lies-to-children, including:
>
> Many of those lies can be perfectly true in some sense.
> I pick some examples:
>
>>- "AEIOU" are the English vowels;
>
> One is free t
On Thu, Oct 5, 2017 at 11:11 AM, Irv Kalb wrote:
> # If we have not seen this employee name before, add it to the dictionary
> # like key value pair: '': [0, 0]
> if not(name in employeeDataDict):
> salesCountDict[name] = [0, 0]
Python provides a "not in" operator, which i
On Thu, Oct 5, 2017 at 1:23 PM, Christopher Reimer
wrote:
> Greetings,
>
> I've always installed the latest and greatest version of Python 3 to develop
> my own programs. I'm planning to release a program to the public. I could
> toss in a note that the program runs on the latest version of Pyth
On Thu, Oct 5, 2017 at 1:20 PM, Steve D'Aprano
wrote:
> On Thu, 5 Oct 2017 09:42 am, Stefan Ram wrote:
>
>> Steve D'Aprano writes:
So, "bottom-up" in this case means: iterators should be
taught before for-loops.
>>>Why?
>>
>> The syntax for is (from memory):
>>
>> for in :
>>
>> . A
On Thu, 5 Oct 2017 10:15 am, Thomas Jollans wrote:
> If you apply that kind of thinking consistently with Python you'll get
> caught in an infinite loop trying to explain attribute access before
> even teaching print().
>
> To call print, you need to access print.__call_. To access that
> attribu
On Thu, 5 Oct 2017 10:56 am, Terry Reedy wrote:
>> You're right, that construct isn't used for reading from files in
>> Python. It _is_ commonly used for reading from things like socket
>
>> mysock.connect(...)
>> while True:
>> data = mysock.recv()
>> if not data:
>> brea
On Thu, Oct 5, 2017 at 12:24 PM, Stefan Ram wrote:
> One might wish to implement a small language with these commands:
>
> F - move forward
> B - move backward
> L - larger stepsize
> S - smaller stepsize
>
> . One could start with the following pseudocode for a dictionary:
>
> { 'F': lambda:
On Thu, 5 Oct 2017 09:42 am, Stefan Ram wrote:
> Steve D'Aprano writes:
>>>So, "bottom-up" in this case means: iterators should be
>>>taught before for-loops.
>>Why?
>
> The syntax for is (from memory):
>
> for in :
>
> . As an example, I might show:
>
> for i in range( 3 ): ...
>
>
Greetings,
I've always installed the latest and greatest version of Python 3 to develop my
own programs. I'm planning to release a program to the public. I could toss in
a note that the program runs on the latest version of Python 3.6 but I haven't
tested on earlier versions (i.e., 3.4 and 3.5)
On Thu, 5 Oct 2017 09:08 am, bartc wrote:
[...]
> And when I tried, it didn't really work in Python 2 (extra attributes
> could still be created, and .__slots__ wasn't readonly); only Py3.
Not quite, but I don't blame you for the mistake. Its an easy one to make.
__slots__ only works in "new sty
On 10/4/17 7:37 AM, Stefan Ram wrote:
bartc writes:
Note that your reverse-indentation style is confusing!
In Python, indentation can be significant.
Sometimes, some lines in Python must be indented by 0.
This dictates that Python code cannot be indented
in posts to differentiate
Stefan Ram wrote:
One might wish to implement a small language with these commands:
Explain why. What is the advantage?
F - move forward
B - move backward
L - larger stepsize
S - smaller stepsize
. One could start with the following pseudocode for a dictionary:
{ 'F': lambda: myturtl
On Thu, 5 Oct 2017 07:17 am, ROGER GRAYDON CHRISTMAN wrote:
> I teach a course in programming to students who have no plans to be
> programmers, scientists, or engineers.And I deliberately lied today
> about the for loop.
Well done! (I'm not being sarcastic.) This is entirely appropriate: all
What would be the best library to use for creating
MIDI files that I could import into a DAW like Reaper?
Thanks,
Tobiah
--
https://mail.python.org/mailman/listinfo/python-list
On Thu, 5 Oct 2017 02:56 am, Paul Moore wrote:
> On 4 October 2017 at 16:35, Steve D'Aprano
> wrote:
>> I've been programming in Python for twenty years, and I don't think I have
>> ever once read from a file using a while loop.
>
> Twenty years isn't long enough :-) The pattern the OP is talkin
I'm assuming from your posts that you are not a student. If that is the case,
look at my solution below.
> On Oct 4, 2017, at 9:42 AM, 20/20 Lab wrote:
>
> Looking for advice for what looks to me like clumsy code.
>
> I have a large csv (effectively garbage) dump. I have to pull out sales
>
On 10/4/2017 1:24 PM, Grant Edwards wrote:
On 2017-10-04, Steve D'Aprano wrote:
It is sometimes called the loop and a half problem. The idea is
that you must attempt to read a line from the file before you know
whether you are at the end of file or not.
Utter nonsense. There's no "must" here.
On 05/10/17 00:42, Stefan Ram wrote:
> Steve D'Aprano writes:
>>> So, "bottom-up" in this case means: iterators should be
>>> taught before for-loops.
>> Why?
> The syntax for is (from memory):
>
> for in :
>
> . As an example, I might show:
>
> for i in range( 3 ): ...
>
> . This raises
On 04/10/2017 17:02, Rhodri James wrote:
On 04/10/17 16:33, Paul Moore wrote:
It's not an advantage or a disadvantage, just an approach. Many people
like it, you may not. Specifically, yes you can't "just declare a
lightweight struct or record with exactly two fields".
Actually you can:
>>
On 04/10/17 23:39, Bill wrote:
> Leam Hall wrote:
>> A while back I pointed out some challenges for the Python community's
>> intake of new coders. Mostly focusing on IRC and the Python e-mail list.
>
> What is the Python e-mail list?
You're on it right now!
There is a two-way mirror between comp.
On 04/10/17 22:47, Fabien wrote:
> On 10/04/2017 10:11 PM, Thomas Jollans wrote:
>> Be warned, pandas is part of the scientific python stack, which is
>> immensely powerful and popular, but it does have a distinctive style
>> that may appear cryptic if you're used to the way the rest of the world
>
Leam Hall wrote:
A while back I pointed out some challenges for the Python community's
intake of new coders. Mostly focusing on IRC and the Python e-mail list.
What is the Python e-mail list?
Thanks,
Bill
Several people have stepped up their "welcome" game and I've been very
impressed wit
On 10/04/2017 01:55 PM, Ben Bacarisse wrote:
20/20 Lab writes:
Looking for advice for what looks to me like clumsy code.
I have a large csv (effectively garbage) dump. I have to pull out
sales information per employee and count them by price range. I've got
my code working, but I'm thinkin
On 10/04/2017 12:47 PM, breamore...@gmail.com wrote:
On Wednesday, October 4, 2017 at 8:29:26 PM UTC+1, 20/20 Lab wrote:
Any help / advice is appreciated,
Matt
Use the csv module https://docs.python.org/3/library/csv.html to read the file
with a Counter
https://docs.python.org/3/library/c
20/20 Lab writes:
> Looking for advice for what looks to me like clumsy code.
>
> I have a large csv (effectively garbage) dump. I have to pull out
> sales information per employee and count them by price range. I've got
> my code working, but I'm thinking there must be a more refined way of
> d
On 10/04/2017 10:11 PM, Thomas Jollans wrote:
Be warned, pandas is part of the scientific python stack, which is
immensely powerful and popular, but it does have a distinctive style
that may appear cryptic if you're used to the way the rest of the world
writes Python.
Can you elaborate on this
On Wed, Oct 4, 2017 14:03 PM, bartc wrote >
"A property, in some object-oriented programming languages, is a special
>sort of class member, intermediate in functionality between a field (or
>data member) and a method."
>
>But Python has some problems just in using fields. If you wanted say a
Am 04.10.17 um 14:34 schrieb Ben Bacarisse:
r...@zedat.fu-berlin.de (Stefan Ram) writes:
Steve D'Aprano writes:
For-each loops are MUCH easier to understand, and should be taught first.
I prefer a bottom-up approach.
For loops are based on iterators.
So, "bottom-up" in this case
On 04/10/17 18:42, 20/20 Lab wrote:
> Looking for advice for what looks to me like clumsy code.
>
> I have a large csv (effectively garbage) dump. I have to pull out
> sales information per employee and count them by price range. I've got
> my code working, but I'm thinking there must be a more re
I teach a course in programming to students who have no plans to be
programmers, scientists, or engineers.And I deliberately lied today about
the for loop.
In my lecture slide, I said that the for loop could only be used if you had
a collection of values (e.g. list, tuple, dict, string, or ran
On 04/10/2017 14:44, john polo wrote:
In Python Programming Fundamentals 2nd ed., the author, Kent D. Lee,
brings up loop and a half in ch. 3, Repetitive Tasks (p. 82). He wrote:
"Whether you are writing code in Python or some other language, this
Reading
Records From a File pattern comes up
On Wednesday, October 4, 2017 at 8:29:26 PM UTC+1, 20/20 Lab wrote:
> Looking for advice for what looks to me like clumsy code.
>
> I have a large csv (effectively garbage) dump. I have to pull out sales
> information per employee and count them by price range. I've got my code
> working, but I
Looking for advice for what looks to me like clumsy code.
I have a large csv (effectively garbage) dump. I have to pull out sales
information per employee and count them by price range. I've got my code
working, but I'm thinking there must be a more refined way of doing this.
---snippet of w
On 2017-10-04, Steve D'Aprano wrote:
>> It is sometimes called the loop and a half problem. The idea is
>> that you must attempt to read a line from the file before you know
>> whether you are at the end of file or not.
>
> Utter nonsense. There's no "must" here. I'll accept the remote
> possibilit
On 4 October 2017 at 17:15, Ian Kelly wrote:
> On Wed, Oct 4, 2017 at 9:08 AM, Steve D'Aprano
> wrote:
>> But in large projects, especially those where you cannot trust every module
>> in
>> the project to obey the naming convention, I can see that this lack might
>> contribute to the perception
On 4 October 2017 at 17:02, Rhodri James wrote:
> Actually you can:
>
class Point:
> ... __slots__ = ("x", "y")
> ... def __init__(self, x, y):
> ... self.x = x
> ... self.y = y
> ... def __str__(self):
> ... return "({0},{1})".format(self.x, self.y)
> ...
p = Point(3,4
On Wed, Oct 4, 2017 at 9:08 AM, Steve D'Aprano
wrote:
> But in large projects, especially those where you cannot trust every module in
> the project to obey the naming convention, I can see that this lack might
> contribute to the perception, if not the fact, of Python being a bit too
> unsafe for
On 04/10/17 16:33, Paul Moore wrote:
On 4 October 2017 at 16:03, bartc wrote:
No error. Some would perceive all this as an advantage, but it means you
can't just declare a lightweight struct or record 'Point' with exactly two
fields x and y. You have to use other solutions ('namedtuples' or wha
On 4 October 2017 at 16:35, Steve D'Aprano wrote:
> I've been programming in Python for twenty years, and I don't think I have
> ever once read from a file using a while loop.
Twenty years isn't long enough :-) The pattern the OP is talking about
was common in "Jackson Structured Programming" fro
On Thu, 5 Oct 2017 02:23 am, Skip Montanaro wrote:
[...]
>> Ew. Sounds like a badly designed package.
>
> I will refer interested readers to the nose documentation:
>
>
https://nose.readthedocs.io/en/latest/doc_tests/test_init_plugin/init_plugin.html
>
> where the author writes, "Many applicati
On Wednesday, October 4, 2017 at 9:34:09 AM UTC+1, alister wrote:
> On Wed, 04 Oct 2017 20:16:29 +1300, Gregory Ewing wrote:
>
> > Steve D'Aprano wrote:
> >> On Wed, 4 Oct 2017 01:40 pm, Chris Angelico wrote:
> >>
> >>>You know, you don't HAVE to economize on letters. It's okay to call
> >>>your
On Thu, 5 Oct 2017 12:44 am, john polo wrote:
> I'm adding to what Stefan wrote, simply to point out how a newb like me
> came across this issue formally, besides actually dealing with this in
> my practice.
>
> In Python Programming Fundamentals 2nd ed., the author, Kent D. Lee,
> brings up loop
On 4 October 2017 at 16:08, Steve D'Aprano wrote:
> On Wed, 4 Oct 2017 08:19 pm, Thomas Nyberg wrote:
>
>> Hello,
>>
>> I was wondering if anyone here knew of any python libraries with
>> interfaces similar to the bzip2 module which is also multithreaded in
>> (de)compression? Something along the
On 4 October 2017 at 16:03, bartc wrote:
> No error. Some would perceive all this as an advantage, but it means you
> can't just declare a lightweight struct or record 'Point' with exactly two
> fields x and y. You have to use other solutions ('namedtuples' or whatever,
> which probably are immuta
On Wed, 4 Oct 2017 09:35 pm, Stefan Ram wrote:
> Steve D'Aprano writes:
>>For-each loops are MUCH easier to understand, and should be taught first.
>
> I prefer a bottom-up approach.
I prefer an effective approach that starts with the simplest concepts first,
not the most complex.
> For
On Wed, Oct 4, 2017 at 9:53 AM, Steve D'Aprano
wrote:
> On Thu, 5 Oct 2017 12:07 am, Skip Montanaro wrote:
>
>> Suppose you want to test a package (in the general sense of the word,
>> not necessarily a Python package).
>
> I'm... not sure I understand. Given that we're discussing Python, in a Pyt
On Wed, 4 Oct 2017 11:50 pm, bartc wrote:
> But this is what it says about it:
>
> "Please reject the PEP. More variations along these lines won't make the
> language more elegant or easier to learn. They'd just save a few hasty
> folks some typing while making others who have to read/maintain th
On Thu, 5 Oct 2017 12:41 am, Ian Kelly wrote:
> Python has the simplest named constants of all:
>
> C = 12345
>
> As long as you don't subsequently change it, it's a constant. And it's
> very simple because it works just like any other variable.
I do feel that the lack of constants[1] is a (mi
On Wed, 4 Oct 2017 08:19 pm, Thomas Nyberg wrote:
> Hello,
>
> I was wondering if anyone here knew of any python libraries with
> interfaces similar to the bzip2 module which is also multithreaded in
> (de)compression? Something along the lines of (say) the pbip2 program
> but with bindings for p
On 04/10/2017 14:41, Ian Kelly wrote:
On Wed, Oct 4, 2017 at 5:07 AM, bartc wrote:
For that matter, I don't think Python has such a feature either. So that you
write for example:
const C = 123345
and then whenever C appears within the code, it's implemented as:
LOAD_CONST (123345)
On Thu, 5 Oct 2017 12:07 am, Skip Montanaro wrote:
> Suppose you want to test a package (in the general sense of the word,
> not necessarily a Python package).
I'm... not sure I understand. Given that we're discussing Python, in a Python
group, what are senses are relevant?
> You probably have
On Wed, Oct 4, 2017 14:54, Chris Angelico wrote:
>
On Wed, Oct 4, 2017 at 2:48 PM, Steve D'Aprano
> wrote:
>> On Wed, 4 Oct 2017 01:40 pm, Chris Angelico wrote:
>>
>> You know, you don't HAVE to economize on letters. It's okay to call
>> your parameters "prompt" instead of "prmt". Remember, tha
On Oct 4, 2017, at 6:07 AM, Skip Montanaro wrote:
>
> Suppose you want to test a package (in the general sense of the word,
> not necessarily a Python package). You probably have specific unit
> tests, maybe some doctests scattered around in doc strings. Further,
> suppose that package requires y
> I've not had this problem myself, but py.test has the idea of "autouse
> fixtures" which would work for this situation. Define your setup call
> in a function, declare it with the pytest.fixture decorator with
> autouse=True, and it'll be run before every test. The declaration goes
> in a conftes
On 4 October 2017 at 14:02, Robin Becker wrote:
> On 04/10/2017 11:57, Rhodri James wrote:
>>
>> On 04/10/17 10:01, Robin Becker wrote:
>>>
>>> Given the prevalence of the loop and a half idea in python I wonder why
>>> we don't have a "do" or "loop" statement to start loops without a test.
>>
>>
I've not had this problem myself, but py.test has the idea of "autouse
fixtures" which would work for this situation. Define your setup call
in a function, declare it with the pytest.fixture decorator with
autouse=True, and it'll be run before every test. The declaration goes
in a conftest.py file
On 4 October 2017 at 13:30, leam hall wrote:
> On Wed, Oct 4, 2017 at 7:15 AM, Ben Finney
> wrote:
>
>> Leam Hall writes:
>>
>> > Folks on IRC have suggested using virtualenv to test code under
>> > different python versions. Sadly, I've not found a virtualenv tutorial
>> > I understand. Anyone
On 10/3/2017 5:08 PM, Stefan Ram wrote:
Steve D'Aprano writes:
On Wed, 4 Oct 2017 04:45 am, Rhodri James wrote:
On 03/10/17 18:29, Stefan Ram wrote:
Is this the best way to write a "loop and a half" in Python?
Define "best".
I'd start with "define loop and a half".
I encountered this ph
On Wed, Oct 4, 2017 at 5:07 AM, bartc wrote:
> It is just being elitist. I have a preference for keeping things simple and
> avoiding unnecessary complexity. But with programming languages many do have
> a penchant for the latter.
>
> As an example, a recent discussion on comp.lang.c was about imp
On 04/10/17 12:07, bartc wrote:
I've seen that example brought up before. It still doesn't cut any ice.
You might as well be condescending of someone who finds Joyce or Proust
unreadable, and prefers McBain, Simenon or Chandler. (Sorry, can't think
of any modern pulp novelists).
I don't thin
On 04/10/2017 14:02, Robin Becker wrote:
On 04/10/2017 11:57, Rhodri James wrote:
On 04/10/17 10:01, Robin Becker wrote:
Given the prevalence of the loop and a half idea in python I wonder
why we don't have a "do" or "loop" statement to start loops without a
test.
See PEP 315. Guido's rejec
Suppose you want to test a package (in the general sense of the word,
not necessarily a Python package). You probably have specific unit
tests, maybe some doctests scattered around in doc strings. Further,
suppose that package requires you call an initialize function of some
sort. Where does that g
On 04/10/2017 11:57, Rhodri James wrote:
On 04/10/17 10:01, Robin Becker wrote:
Given the prevalence of the loop and a half idea in python I wonder why we
don't have a "do" or "loop" statement to start loops without a test.
See PEP 315. Guido's rejection note is here:
https://mail.python.org/
r...@zedat.fu-berlin.de (Stefan Ram) writes:
> bartc writes:
>>Note that your reverse-indentation style is confusing!
>
> In Python, indentation can be significant.
>
> Sometimes, some lines in Python must be indented by 0.
>
> This dictates that Python code cannot be indented
> in posts
On 04/10/2017 11:57, Rhodri James wrote:
On 04/10/17 10:01, Robin Becker wrote:
Given the prevalence of the loop and a half idea in python I wonder
why we don't have a "do" or "loop" statement to start loops without a
test.
See PEP 315. Guido's rejection note is here:
https://mail.python.org
r...@zedat.fu-berlin.de (Stefan Ram) writes:
> Steve D'Aprano writes:
>>For-each loops are MUCH easier to understand, and should be taught first.
>
> I prefer a bottom-up approach.
>
> For loops are based on iterators.
>
> So, "bottom-up" in this case means: iterators should be
> taught b
On 2017-10-04, Stefan Ram wrote:
> r...@zedat.fu-berlin.de (Stefan Ram) writes:
>>Maybe this way: Use a while-loop and try-catch to get values
>>from an iterator until exhausted, and then introduce the
>>for-loop as an abbreviation for that.
>
> # while-loop
>
> iterable = range( 3 )
>
> iterator
On Wed, Oct 4, 2017 at 7:15 AM, Ben Finney
wrote:
> Leam Hall writes:
>
> > Folks on IRC have suggested using virtualenv to test code under
> > different python versions. Sadly, I've not found a virtualenv tutorial
> > I understand. Anyone have a link to a good one?
>
> The Python Packaging Auth
On 04/10/17 10:01, Robin Becker wrote:
Given the prevalence of the loop and a half idea in python I wonder why
we don't have a "do" or "loop" statement to start loops without a test.
See PEP 315. Guido's rejection note is here:
https://mail.python.org/pipermail/python-ideas/2013-June/021610.ht
On 04/10/2017 11:42, Stefan Ram wrote:
Robin Becker writes:
Given the prevalence of the loop and a half idea in python I wonder why we don't
have a "do" or "loop" statement to start loops without a test.
VBA has quite an orthogonal way to build loop control:
pre-checked positive:
Do W
"Stefan Ram" wrote in message
news:vba-loops-20171004114...@ram.dialup.fu-berlin.de...
Robin Becker writes:
>Given the prevalence of the loop and a half idea in python I wonder why
>we don't
>have a "do" or "loop" statement to start loops without a test.
VBA has quite an orthogonal way to
Leam Hall writes:
> Folks on IRC have suggested using virtualenv to test code under
> different python versions. Sadly, I've not found a virtualenv tutorial
> I understand. Anyone have a link to a good one?
The Python Packaging Authority has a guide
https://packaging.python.org/tutorials/install
On 04/10/2017 06:32, Steve D'Aprano wrote:
On Wed, 4 Oct 2017 02:00 am, bartc wrote:
Does all this advanced stuff (which I don't understand and which doesn't
look very appealing either; hopefully I will never come across such
code) still count as programming?
I could not have hoped to see a m
A while back I pointed out some challenges for the Python community's
intake of new coders. Mostly focusing on IRC and the Python e-mail list.
Several people have stepped up their "welcome" game and I've been very
impressed with the way things are going.
Great job!
Leam
--
https://mail.pytho
Folks on IRC have suggested using virtualenv to test code under
different python versions. Sadly, I've not found a virtualenv tutorial I
understand. Anyone have a link to a good one?
The next step will be to figure out how to package a project; a good
tutorial URL would be appreciated on that,
Hello,
I was wondering if anyone here knew of any python libraries with
interfaces similar to the bzip2 module which is also multithreaded in
(de)compression? Something along the lines of (say) the pbip2 program
but with bindings for python? Obviously the multi-threaded part will
need to be handle
Steve D'Aprano writes:
> On Wed, 4 Oct 2017 04:45 am, Rhodri James wrote:
>
>> On 03/10/17 18:29, Stefan Ram wrote:
>>>Is this the best way to write a "loop and a half" in Python?
>>
>> Define "best".
>
> I'd start with "define loop and a half".
What it means to me is this pattern:
while
Given the prevalence of the loop and a half idea in python I wonder why we don't
have a "do" or "loop" statement to start loops without a test.
C:\Python27\Lib>grep "while True" *.py | wc -l
99
C:\Python27\Lib>grep "while 1" *.py | wc -l
117
C:\Python36\Lib>grep "while True" *.py
On Wed, 04 Oct 2017 20:16:29 +1300, Gregory Ewing wrote:
> Steve D'Aprano wrote:
>> On Wed, 4 Oct 2017 01:40 pm, Chris Angelico wrote:
>>
>>>You know, you don't HAVE to economize on letters. It's okay to call
>>>your parameters "prompt" instead of "prmt". Remember, that's part of
>>>your API.
>>
Steve D'Aprano wrote:
On Wed, 4 Oct 2017 01:40 pm, Chris Angelico wrote:
You know, you don't HAVE to economize on letters. It's okay to call
your parameters "prompt" instead of "prmt". Remember, that's part of
your API.
Whn u wste vwels lik that, dn't b srprsd whn u run ot n hav shrtg of vwel
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