(Forgot the subject)
> >* On 25 Mar 2017, at 15:51, Gerald Britton ><https://mail.python.org/mailman/listinfo/python-ideas>> wrote:
> *> >* On 25 March 2017 at 11:24, Pavel Velikhov <http://gmail.com> <http://gmail.com/ <http://gmail.com/>>> wrot
plemented in .NET, has no GIL
and doesn't need it since ir runs on the CLR. That means that, for some
things, IronPython can be more performant.
No word yet if the IronPython project intends to port to .NET core or
enable to run it on OS's other than Windows.
Also, it's worth noting that the P
>
> As you guys might know, .NET Core is up and running, promising a
> "cross-platform, unified, fast, lightweight, modern and open source
> experience" (source: .NET Core official site). What do you guys think about
> it? Do you think it will be able to compete with and overcome Python in the
>
New submission from Gerald Britton:
I was rereading the 2.7 docs about abstract base classes the other day. I
found this:
"This defines a read-only property; you can also define a read-write abstract
property using the ‘long’ form of property declaration:"
along with an exam
I was rereading the 2.7 docs about abstract base classes the other day. I
found this line in the usage section of the abc.abstractproperty function:
"This defines a read-only property; you can also define a read-write
abstract property using the ‘long’ form of property declaration:"
along with
n (otherwise, what's the point of the example?)
Is this a doc bug, an ABC bug or just me? (I've been known to be buggy
from time to time!)
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eepy=60, sneezy=70):
> # the usual assign arguments to attributes dance...
> self.bashful = bashful
> self.doc = doc
> # etc.
This looks like a situation where the GoF Builder pattern might help
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at least, updated every thirty seconds or so.) Anybody know
> anything like that?
Visual Studio Code does an OK job with the
reStructuredText Language Support for Visual Studio Code
Extension
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gy
from time to time!)
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>On Sun, Jul 31, 2016 at 6:33 AM, Gerald Britton
> wrote:
>> Today, I was reading RH's Descriptor HowTo Guide at
>>
>> https://docs.python.org/3/howto/descriptor.html?highlight=descriptors
>>
>> I just really want to fully "get" this.
>>
>>
Today, I was reading RH's Descriptor HowTo Guide at
https://docs.python.org/3/howto/descriptor.html?highlight=descriptors
I just really want to fully "get" this.
So I put together a little test from scratch. Looks like this:
class The:
class Answer:
def __get__(self, obj,
/mail.python.org/pipermail/python-list/2016-July/thread.html#711777>
[ subject ]
<https://mail.python.org/pipermail/python-list/2016-July/subject.html#711777>
[ author ]
<https://mail.python.org/pipermail/python-list/2016-July/author.html#711777>
------
that would indicate to prefer method
1 or method 2? Are there methods 3, 4, 5, ... that I should consider that
are even better?
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On Wed, 25 May 2016 10:00 am, Steven D'Aprano wrote:
>On Wed, 25 May 2016 09:35 am, Gerald Britton wrote:
>
>For brevity, here's your package setup:
>
>
>testpkg/
>+-- __init__.py
>+-- testimport.py which runs "from testpkg.testimported import A"
>+-- testi
ile "testimport.py", line 1, in
from testpkg.testimported import A
ImportError: No module named testpkg.testimported
However, I thought I was doing what the doc describes for intra package
imports. What am I missing?
Or is the problem simply that I do not have subpackages?
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Gerald Brit
' +
destpatt + '\n' +
port + p + '\n'
forward-digits 7 if line[0:3] == y and q == y else
'\n'
)
Which keeps the eye focused on the data being written (at least for me).
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understand the Python does
not consider a class definition as a separate namespace as it does for
function definitions. That is a helpful understanding.
Anyway, thanks for jumping in to the discussion.
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Gerald Britton wrote:
I now understand the Python does
not consider a class definition as a separate namespace as it does for
function definitions. That is a helpful understanding.
That is not correct. Classes are separate namespaces -- they just
aren't automatically searched. The only
as an unqualified variable
inside the method in the class. If Python allowed such a thing, what
problems would that cause?
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horsepower and the size of sys.maxint on your
machine, this may take a few *days* to run.
Note: The sum in the Python expression above runs in reverse to
minimize rounding errors.
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C code to speed up things:
http://docs.python.org/extending/extending.html, when really needed.
How do you spell red herring?
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, an
optimization was done for sets (See Optimizations at
http://docs.python.org/py3k/whatsnew/3.2.html) though I do not see
anything similar for dictionaries.
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I see that Python 3.2 includes a new module -- html -- with a single
function -- escape. I would like to know how this function differs
from xml.sax.saxutils.escape and, if there is no difference (or only a
minor one), what the need is for this new module and its lone function
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'
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the latter neater for the same reasons as above
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is exactly the point.
f you have an expression that can be inlined you save the function call
overhead with the list comprehension.
Of course, but that's not the point.
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, a').timeit()
2.4131419658660889
So, what's the feeling out there? Go with map and the operators or
stick with the list comps?
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File stdin, line 2, in f
File stdin, line 2, in g
File stdin, line 2, in h
Exception
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not in a context
manager on f:
with h as f():
# insert code here to return True, since I am in a context manager on f:
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On Dienstag 01 Februar 2011, Gerald Britton wrote:
I'd like to know how (perhaps with the inspect module) I can
tell if I am running in a context manager.
class f(object):
def __init__(self):
self.inContext = False
def __enter__(self):
self.inContext = True
return
with f() as x:
hasattr(x,'__enter__')
True
As you can see, the object has a '__enter__' method regardless of how
it was created. Whatever the test, it needs to return False in the
first case and True in the second case, without modifying the class
definition.
Gerald Britton
you don't really need in this case.
I have a couple of questions:
1. If you had to choose between approaches 1 and 2, which one would
you go for, and why?
2. What other techniques have you used in such a situation?
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TypeError: list indices must be integers, not tuple
but that clearly doesn't work! So, when and how can one use slice lists?
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?
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thing without the escapes:
sqlchk = 'select * from employees where id = %s' % (arg)
Anyway -- just some food for thought.
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indent the individual lines any way you like.
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approach and, if so, what was your motivation?
Is there a good/bad reason to choose one over the other?
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): continue
# process x
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Quijano
Estudiante de Ingeniería Informática (UCA)
Alumno colaborador del Departamento de Lenguajes y Sistemas Informáticos
Participante del IV Concurso Universitario de Software Libre
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If you browse the Python source tree, you should be able to find it.
http://svn.python.org/view/python/trunk/Objects/exceptions.c?revision=77045view=markup
On Fri, Feb 5, 2010 at 7:27 PM, Charles Yeomans char...@declaresub.com wrote:
On Feb 5, 2010, at 2:13 PM, Gerald Britton wrote:
On Fri
.
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/#why-doesn-t-list-sort-return-the-sorted-list
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import antigravity
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(for me)
to read. But there was considerable resistance to spending so much vertical
space in the source code.
Weird! It's three lines and the original was four lines was it not?
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.
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,),)
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, with words separated by underscores
as necessary to improve readability.
mixedCase is allowed only in contexts where that's already the
prevailing style (e.g. threading.py), to retain backwards compatibility.
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http://docs.python.org/3.1/library/decimal.html#decimal.Context.power
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with
files such as : foo.txt, bar.txt.
Any idea ?
Thanks,
Cpa
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= sys.argv[1:]
os.system('mkdir tmp')
# Some code to create the .tex
# Compile tex files
os.system('for file in tmp/*; do pdflatex $file; done')
Pretty simple, alas.
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On 3 fév, 18:54, Gerald Britton gerald.brit...@gmail.com wrote:
Can you post your code?
On Wed, Feb 3, 2010
.)
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will show up sooner.
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. In
particular, if the array was sparse, rather than completely full, the
two-level dictionary implementation would be the natural representation.
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in 2.x (calls the function
with each value returned by the iterator) but return nothing. Maybe
apply isn't the best name; it's just the first one that occurred to
me.
Or is this just silly and should I forget about it?
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you want to
eat up the rest of the iterable. It also solves the iterator-variable
leakage problem and is only a wee bit slower than a conventional
for-loop.
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curious and I'd like to know:
1. Can anyone else confirm this observation?
2. Why should the pure list comprehension be slower than the same
comprehension enclosed in '[...]' ?
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Thanks! Good explanation.
On Tue, Jan 19, 2010 at 10:57 AM, Alf P. Steinbach al...@start.no wrote:
* Gerald Britton:
Yesterday I stumbled across some old code in a project I was working
on. It does something like this:
mystring = '\n'.join( [ line for line in lines if some conditions
in the generator expression. That in itself probably accounts for the
differences since function calls are somewhat expensive IIRC.
On Tue, Jan 19, 2010 at 11:18 AM, Stephen Hansen apt.shan...@gmail.com wrote:
On Tue, Jan 19, 2010 at 7:30 AM, Gerald Britton gerald.brit...@gmail.com
wrote:
[snip
},
{action_name: action_2, val: asdf, val2:
asdf},
{action_name: action_1, val: asdf, val2:
asdf}]
And have this create a list/dict. I'm aware of pickle, but it won't
work as far as I can tell.
Thanks.
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it, I would suppose that join could use a
dynamic-table approach to hold the result, starting with some
guesstimate then expanding the result buffer if and when needed.
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, Arnaud Delobelle
arno...@googlemail.com wrote:
Gerald Britton gerald.brit...@gmail.com writes:
[snip]
Yes, list building from a generator expression *is* expensive. And
join has to do it, because it has to iterate twice over the iterable
passed in: once for calculating the memory needed
Gerald Britton gerald.brit...@gmail.com added the comment:
This bug reports corresponds to one opened on Gnome:
http://bugzilla.gnome.org/show_bug.cgi?id=578419
According to the devs there:
As far as I can tell this is a Python/C bug. PyGObject is doing
everything by
the book
New submission from Gerald Britton gerald.brit...@gmail.com:
Python 2.6 segfaults when starting up the gramps application
--
assignee: theller
components: ctypes
files: gdb-python.txt
messages: 86981
nosy: gbritton, theller
severity: normal
status: open
title: Segfault in typeobject.c
Hi -- Some time ago I ran across a comment recommending using var is
None instead of var == None (also var is not None, etc.) My own
testing indicates that the former beats the latter by about 30% on
average. Not a log for a single instruction but it can add up in
large projects.
I'm looking
For those interested in the Sieve of Eratosthenes, have a look at:
http://www.cs.hmc.edu/~oneill/papers/Sieve-JFP.pdf
The examples in the paper are in Haskell, but I have been
corresponding with the author who provided this Python version:
def sieve():
innersieve = sieve()
prevsquare =
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