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Peter Norvig: New Python Operators (2023)

29 points by behnamoh 3y ago

fritzo 3y ago
Honestly though, I wish min and max were treated as first class citizens, the way addition and multiplication are. In-place max=, min= operators would be super useful, both in Python in general and in ML flavored libraries in particular (e.g. numpy, torch).
deleted 3y ago
[deleted]
ra 3y ago
This is last year's April fools joke?
- geor9e 3y ago
  Everything in it is true, though.
MathMonkeyMan 3y ago
It took me longer than I'd like to admit. The lapping cat operator is truly inspired. Being a sucker for for pattern matching, I'm more likely to write foo, = seq or foo, *_ = seq than assert len(seq) == 1 foo = seq[0] or foo = seq[0] Though I vaguely call past colleagues disagreeing, or at least insisting on parens around the "foo," in the first one.
milliams 3y ago
(2023)
behnamoh 3y ago
I wish Python had null coalescing, custom operators, macros, and optional static typing enforcement at runtime (without needing mypy).
- terr-dav 3y ago
  >...and optional static typing enforcement at runtime (without needing mypy). Check this out: https://beartype.readthedocs.io/en/latest/ https://beartype.readthedocs.io/en/latest/
unwind 3y ago
That was fun, but in a semi-scary way. I have major respect for the source, so when Mr Norvig states that this (the "Emphasis Operator"): sigh = 3 ['oh', 'good', 'grief', *sigh* ['drat']] results in: ['oh', 'good', 'grief', 'drat!', 'drat!', 'drat!']]. I first believed it, then doubted it, then tested it, and then came here to comment. Those exclamation points are not there in the output, which I was very relieved to see. Phew, but I also think it would be a good idea to fix it.
fred256 3y ago
Semi-related, in a past life, I used ... to indicate "not implemented yet": def not_implemented_yet(): ...
IgorPartola 3y ago
I knew it was a joke when I saw the first one: items *= 0. # items is now empty But didn’t explain whether it was emptied in place or if a new list object was assigned to items.
JohnDeHope 3y ago
These are cute, but this is also one of the reasons why I can never get into python. It's had too much stuff tossed into it.

29 points by behnamoh 3y ago

Honestly though, I wish min and max were treated as first class citizens, the way addition and multiplication are. In-place max=, min= operators would be super useful, both in Python in general and in ML flavored libraries in particular (e.g. numpy, torch).

deleted 3y ago

[deleted]

ra 3y ago

This is last year's April fools joke?

geor9e 3y ago
Everything in it is true, though.

MathMonkeyMan 3y ago

It took me longer than I'd like to admit. The lapping cat operator is truly inspired. Being a sucker for for pattern matching, I'm more likely to write foo, = seq or foo, *_ = seq than assert len(seq) == 1 foo = seq[0] or foo = seq[0] Though I vaguely call past colleagues disagreeing, or at least insisting on parens around the "foo," in the first one.

milliams 3y ago

(2023)

behnamoh 3y ago

I wish Python had null coalescing, custom operators, macros, and optional static typing enforcement at runtime (without needing mypy).

terr-dav 3y ago
>...and optional static typing enforcement at runtime (without needing mypy). Check this out: https://beartype.readthedocs.io/en/latest/ https://beartype.readthedocs.io/en/latest/

unwind 3y ago

That was fun, but in a semi-scary way. I have major respect for the source, so when Mr Norvig states that this (the "Emphasis Operator"): sigh = 3 ['oh', 'good', 'grief', *sigh* ['drat']] results in: ['oh', 'good', 'grief', 'drat!', 'drat!', 'drat!']]. I first believed it, then doubted it, then tested it, and then came here to comment. Those exclamation points are not there in the output, which I was very relieved to see. Phew, but I also think it would be a good idea to fix it.

fred256 3y ago

Semi-related, in a past life, I used ... to indicate "not implemented yet": def not_implemented_yet(): ...

IgorPartola 3y ago

I knew it was a joke when I saw the first one: items *= 0. # items is now empty But didn’t explain whether it was emptied in place or if a new list object was assigned to items.

JohnDeHope 3y ago

These are cute, but this is also one of the reasons why I can never get into python. It's had too much stuff tossed into it.