(...) make it clear and
explicit. That's why I strongly discourage people defining their own "sin"
function that'd take degrees, therefore I look for a new function name
(sindeg).
Le ven. 8 juin 2018 à 00:17, Hugh Fisher a écrit :
> > Date: Thu, 7 Jun 2018 12:33:29 +
I suggest adding degrees version of the trigonometric functions in the math
module.
- Useful in Teaching and replacing calculators by python, importing something
is seen by the young students much more easy than to define a function.
- Special values could be treated, aka when the angle is a mu
second, minute, hour (singular) timedelta objects in the module are a good
idea, one could do 5 * minute to get a timedelta or one could do value /
minute to get a float.
a = datetime.now()
b = datetime(2018, 2, 3) + 5 * minute
print((a - b).total_seconds())
print((a - b) / minute)
Le mar. 5 ju
What about
2.5*h - 14*min + 9300*ms * 2
where:
h = timedelta(hours=1)
min = timedelta (minutes=1)
ms = timedelta (milliseconds=1)
By the way "min" isn't a keyword, it's a standard function so it can be
used as a variable name.
However why be limited to time units ? One would want in certain
ap
ke
such a thing, for .. in being the iteration.
Le jeu. 24 mai 2018 à 18:22, Alexander Belopolsky <
alexander.belopol...@gmail.com> a écrit :
>
>
> On Thu, May 24, 2018 at 12:04 PM Robert Vanden Eynde
> wrote:
>
> > This idea was mentioned (by me) at a time yes, but was
This idea was mentioned (by me) at a time yes, but wasn't written in the
document.
I think one of the thing was that it would make the grammar non LL1 because
when seeing the token "for" in a list comprehension it wouldn't know in
advance if it's the loop or the assignment.
And also, it might con
I agree it would be useful to have new keywords without being reserved, and
we could even go with mechanism like infix operators created by user.
It would allow things like [given for x in range(5) given given = x+1] or
even [given for given in range(given) given given = given + 1] haha, but as
ot
I really liked the syntax that mimicked lambda even if I find it verbose :
a = local x=1, y=2: x + y + 3
Even if I still prefer the postfix syntax :
a = x + 3 where x = 2
About scheme "let" vs "let*", the paralel in Python is :
a, b, c = 5, a+1, 2 # let syntax
a = 5; b = a+1; c = 2 # let* synt
I just ran into a similar problem, how to relatively import without binding
the submodule.
Let's say you have this :
myapp/
urls.py
views/
base.py
When you're in urls.py and you want to relatively access Functions from
base.py, you must use the from syntax.
from .views import bas
So yes, currently you just do :
import textwrap
print(textwrap.dedent("""
I am
A Line
"""))
So you'd want a string litteral ?
print(d"""
I am
A Line
""")
Le sam. 31 mars 2018 à 17:06, Ryan Gonzalez a écrit :
> I have to admit, regardless of how practical this is, it would sur
+1 on general idea of discouraging it.
> [...] mistakes like:
>
> fruits = {
> "apple",
> "orange"
> "banana",
> "melon",
> }
+1
> (and even making the static analysers, like pyflakes or pylint, to
> show that as a warning)
+1
> I agree that implicit concatenation is a bad feat
Le mer. 14 mars 2018 à 18:04, Carl Meyer a écrit :
> On 3/14/18 8:03 AM, Guido van Rossum wrote:
> > I use the feature regularly for long error messages, and when combined
> > with .format() or % it's not so easy to replace it with a + (it would
> > require adding parentheses).
> >
> > So I am ag
Le mer. 14 mars 2018 à 17:29, Paul Moore a écrit :
> Ironically, many of the places I see implicit concatenation used are
> where people need to work around linters complaining about line
> lengths. I understand the benefits of projects that mandate code
> passing lint checks, but I foresee seque
In module filecmp, the normal functions cmp and cmpfiles do have a
shallow attribute. But the dircmp class doesn't provide one, could we
add it in the constructor ?
In the implementation, it would only change the call to cmpfiles in def phase3 ?
It could be useful for performance (same reason, th
Indeed, linters are the place to go, but I think there is no
"official" linter (am I wrong ?), are pyflakes and pylint independant
projects ?
2018-03-14 16:03 GMT+01:00 Guido van Rossum :
> I use the feature regularly for long error messages, and when combined with
> .format() or % it's not so eas
+1 on general idea of discouraging it.
> [...] mistakes like:
>
> fruits = {
> "apple",
> "orange"
> "banana",
> "melon",
> }
+1
> (and even making the static analysers, like pyflakes or pylint, to
> show that as a warning)
+1
> I agree that implicit concatenation is a bad feat
> I know Guido is on record as not wanting to allow both "for name in
> sequence" and "for name = expr" due to that being a very subtle distinction
> between iteration and simple assignment (especially given that Julia uses
> them as alternate spellings for the same thing), but I'm wondering if it
> What the heck, if it was good enough for PL/1...
It would still be parsable indeed.
A keyword available in a context would then be something new in the language.
> Choice of syntax is important, though. It's all very well
> to come up with an "insert syntax here" proposal that has
> some big o
> Robert Vanden Eynde wrote:
>>
>> But I think that the implementation of print(y with y = x + 1) would
>> be more close to next(y for y in [ x+1 ])
>
>
> WHy on earth should it be? Expanding that gives you a generator
> containing a loop that only executes once t
Le 3 mars 2018 08:45, "Nick Coghlan" a écrit :
On 3 March 2018 at 11:36, Greg Ewing wrote:
> 1. Name bindings local to an expression:
>
>roots = ([(-b-r)/(2*a), (-b+r)/(2*a)] where r = sqrt(b*b-4*a*c))
>
> B. In an expression, surrounded by parentheses for
> disambiguation. Bindings are vis
The syntax you propose is already in the Alternate syntax and there is an
implementation at https://github.com/thektulu/cpython/tree/where-expr
Already discussed, but no conclusion, for me I see two different proposals,
the "[y for x in range(5) with y = x+1]" in comprehensions list, and the
case
Le 2 mars 2018 22:21, "Robert Vanden Eynde" a écrit :
Le 2 mars 2018 22:13, "Chris Angelico" a écrit :
On Sat, Mar 3, 2018 at 7:47 AM, Robert Vanden Eynde
wrote:
>> And please, don't top-post. Again, if your mail client encourages top
>> posting, ei
Le 2 mars 2018 22:13, "Chris Angelico" a écrit :
On Sat, Mar 3, 2018 at 7:47 AM, Robert Vanden Eynde
wrote:
>> And please, don't top-post. Again, if your mail client encourages top
>> posting, either override it, or get a better one.
>
> @Chris @Rohdri (@Jonat
Le 2 mars 2018 22:03, "Ethan Furman" a écrit :
On 03/02/2018 12:47 PM, Robert Vanden Eynde wrote:
@Chris @Rohdri (@Jonathan below)
>
> For morons like me who didn't know what "top-posting" was, I went on
> Wikipedia
> (https://en.m.wikipedia.org/wiki/Posting
Le 2 mars 2018 21:02, "Chris Angelico" a écrit :
On Sat, Mar 3, 2018 at 6:55 AM, Robert Vanden Eynde
wrote:
> @Rhodri, this is what Everybody does because you hit the "reply to all"
> button, but, we don't receive two copies on the mail, I don't know why
(
> 2018-03-02 7:03 GMT-08:00 Robert Vanden Eynde :
>
Guys, please don't email to me *and* the mailing list. Getting two copies
of your deathless prose makes me less likely to pay attention to you, not
more.
--
Rhodri James *-* Kynesim Ltd
g same idea ?
Cheers,
Robert
Le 28 févr. 2018 22:53, "Chris Angelico" a écrit :
On Thu, Mar 1, 2018 at 8:38 AM, Robert Vanden Eynde
wrote:
> Le 28 févr. 2018 11:43, "Chris Angelico" a écrit :
>> If you aren't using the variable multiple times, there's
+1 on extracting the big win for "if" and "while" (the regex case is
wonderul). It would be see as an "extended if/while" rather than a general
statement assignation.
+1 on list comprehensions, even if I prefer the
[(y, x/y) with y = f(x) for x in range(5)] or [(y, x/y) for x in range(5)
with y =
22:54 GMT+01:00 Alex Walters :
> That should probably be its own thread
>
>
>
> *From:* Python-ideas [mailto:python-ideas-bounces+tritium-list=sdamon.com@
> python.org] *On Behalf Of *Robert Vanden Eynde
> *Sent:* Wednesday, February 28, 2018 4:48 PM
> *Cc:* python-ideas
&
ts.
Also, it's more interactive than email on a global list, people can talk to
each other in parallel, if I want to answer about a mail that was 10 mail
ago, it gets quickly messy.
We could all discuss on a gist or some "Issues" thread on GitHub.
2018-02-28 22:38 GMT+01:00 Robert Vande
Le 28 févr. 2018 11:43, "Chris Angelico" a écrit :
> It's still right-to-left, which is as bad as middle-outward once you
> combine it with normal left-to-right evaluation. Python has very
> little of this [..]
I agree []
>> 2) talking about the implementation of thektulu in the "where =" p
True, but it's also extremely wordy. Your two proposed syntaxes, if I
have this correct, are:
1) '(' 'with' EXPR 'as' NAME ':' EXPR ')'
2) '(' EXPR 'with' EXPR 'as' NAME ')'
Of the two, I prefer the first, as the second has the same problem as
the if/else expression: execution is middle-first. It
Hello Chris and Rob,
did you compare your proposal tothe subject called "[Python-ideas]
Temporary variables in comprehensions" on this month list ?
If you don't want to go through all the mails, I tried to summarize the
ideas in this mail : https://mail.python.org/pipermail/python-ideas/2018-
Feb
re" syntax with the "where" keyword.
[y+2 for x in range(5) where y = x+1]
Also usable in any expression :
print(y+2 where y = x+1)
*Conclusion*
Here is all the talk/work/argument I've already found about this syntax.
Apparently it's been a while (2010) since such an id
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