On Sat, Dec 26, 2020 at 11:23:16AM -, Anton Abrosimov wrote:
> I am trying to release comfortable dataclass unpacking using `**`
> operator. Now I have 5 different ways to do it. But not a single good
> one. Confused by the implementation of the unpacking operator.
>
> So when I try to
On Sat, Dec 26, 2020 at 09:18:09PM -0800, Brendan Barnwell wrote:
> >Yes it is documented:
> >
> > help(dict.update)
> >
> >and it was intentionally the inspiration for the behaviour of dict
> >augmented assignment.
>
> I see. It's rather disturbing that that isn't mentioned in the
You should really just write your own function -- Python can't include
every validation function you can think of. It already provides an
extensible and well tested float conversion which throws an exception on
bad input (the 'float' constructor)
You want it to not throw an exception, but rather
On 2020-12-27 at 19:55:39 -0300,
"Joao S. O. Bueno" wrote:
> I tried to make clear this should be in addition to that - But yes, I
> failed to mention in my message that I think such a function would
> mostly benefit beginners learning around with "input" and "print" - it
> is painful to
On Mon, Dec 28, 2020 at 9:55 AM Joao S. O. Bueno wrote:
> On Sun, 27 Dec 2020 at 19:31, Chris Angelico wrote:
> Sorry, I thought my message conveyed that I know "float" exists, and
> try/except is the current usable pattern (it is in the original posting
> anyway)
And my point is that
On Sun, 27 Dec 2020 at 19:31, Chris Angelico wrote:
> On Mon, Dec 28, 2020 at 9:22 AM Joao S. O. Bueno
> wrote:
> >
> > I agree - the three builtin methods are almost the same (not sure if
> > there is any difference at all),
>
> Yes - they all check if the string matches a particular set of
On Mon, Dec 28, 2020 at 9:22 AM Joao S. O. Bueno wrote:
>
> I agree - the three builtin methods are almost the same (not sure if
> there is any difference at all),
Yes - they all check if the string matches a particular set of characters.
> while there is no trivial way to check for a valid
>
I agree - the three builtin methods are almost the same (not sure if
there is any difference at all), while there is no trivial way to check for
a valid
float, or otherwise a chosen representation of a decimal number without
resorting
to a try-except statement, or complicated verification schemes
str currently has methods like isdecimal, isnumeric and isdigit, but there
isn't an isfloat check, which could be very handy.
a trivial implementation could be as simple as:
try:
float(self)
return True
except ValueError:
return False
1. I think this is too complex for the stdlib. One tool should do one thing.
What about the PEP for this project?
2. This is very particular. For those who often convert data in different ways,
but do not use pandas, attrs, SQL...
3. What about `typing`?
4. OTF code generation (if I understood
Hello everyone!
The idea: it would be cool to have the functionality of "convtools" library
available along with "itertools".
Python should provide decent functionality of aggregations and joins out-of-
the-box.
Given that named tuples generate some could, this one could too:
Christopher Barker wrote:
> My first thought is that for dataclasses, you can use the asdict() method,
> and you're done.
I thought in a similar way. I'll ask another (7K wtf in 2 years, 3 month)
question about converting a dataclass to dict.
___
0. I believe that the `dict` behavior needs to be frozen. The change will break
a lot of existing code, it's too much damage.
0.1. Yes, `keys` is not a good name for internal use, but that's okay.
0.2. If I want to make a class look like a `dict`, I understand that I will get
`keys`, `items`...
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