Tuples are immutable and sort of have to be created all at once. This does
not jive well wth being made incrementally in a comprehension. And, as
noted, the use of parentheses I too many contexts means that what looks like
a comprehension in parentheses is used instead as a generator.
If you reall
On 2/20/23 18:01, Hen Hanna wrote:
> is Comp.Lang.Python very active
Fairly. Apparently the cool kids are using the Python Discourse forum.
> why is a linear search thru a Tuple slower
> (than thru a (corresponding) List ) ???
I cannot say, unfortunately.
On 2/20/23 18:06, Hen Hanna wrote:
> is [comprehension] the right word???
>
> i swear i never heard the word before
> getting into Python a few years ago.
Seems as though the term was borrowed from formal mathematics set theory.
A simple search reveals that the term "list comprehen
On 2/20/23 20:36, Hen Hanna wrote:
> For a while, i've been curious about a [Tuple Comprehension]
I've never heard of a "Tuple comprehension." No such thing exists as
far as I know.
> So finally i tried it, and the result was a bit surprising...
>
>
> X= [ x for x in range(10) ]
> X= (
For a while, i've been curious about a [Tuple Comprehension]
So finally i tried it, and the result was a bit surprising...
X= [ x for x in range(10) ]
X= ( x for x in range(10) )
print(X)
a= list(X)
print(a)
--
https://mail.python.org/mailman/listinfo/python-list
On Monday, February 20, 2023 at 5:45:39 PM UTC-8, Paul Rubin wrote:
> Hen Hanna writes:
> > is [comprehension] the right word???
> Yes, it comes from math, particularly set theory. An expression like
>
> { n | n:integer, n mod 2 = 0 }
>
> is called a set comprehension, and then one there deno
is Comp.Lang.Python very active
why is a linear search thru a Tuple slower
(than thru a (corresponding) List ) ???
sometimes, i 'd like to put meaningless indentations
like i do (twice) below
( how ca
is [comprehension] the right word???
i swear i never heard the word before
getting into Python a few years ago.
What was it called in the Lisp (Scheme) world
ok... in Common Lisp, (and MacLisp) it was Loop and Collect
https://en.wikipedia.org/wiki/List_comprehension#Hi
scruel tao wrote:
If we have the following code:
```
parser = argparse.ArgumentParser(description="test")
parser.add_argument('path')
```
Run it without args, will get error message:
```
usage: test.py [-h] path
test.py: error: the following arguments are required: path
```
However, I hope the
