LWN: Comments on "New operators for Python dicts?"

New operators for Python dicts?

marcH — Mon, 09 Mar 2015 07:18:28 +0000

> Dictionaries (or dicts) are also known as associative arrays or *hashes* in other languages.

Mmmm... let's see which confused languages mix up feature and implementation...

(Cheap shot; sorry)

droundy — Sat, 07 Mar 2015 01:20:54 +0000

Given that dicts are so much closer to sets than lists, I was puzzled that the article didn't discuss the comparison with python's set syntax.

In particular, sets use | and |= where + and += are being proposed for dicts.

dashesy — Thu, 05 Mar 2015 17:37:50 +0000

Or maybe better leave dicts alone and start using Pandas for fancy data manipulations, joins, merge, ...

zyga — Thu, 05 Mar 2015 14:30:34 +0000

I'd like to clarify that __iadd__ and += are not that similar (when compared to __add__ and +).

Consider:

a = 1
a += 1

This calls int.__add__ as int.__iadd__ doesn't exist.

+= will always work if + is defined
__iadd__ may not be defined for certain types