walrus with a twist :+= or ...

Wed Oct 27 20:56:59 EDT 2021

I realized that the person seeking completeness in Python may next ask why
the Walrus operator, :=, is not properly extended to include a whole
assortment of allowed assignment operators

I mean in normal python programs you are allowed to abbreviate

x = x + 5

with

x += 5

Similarly you have other operators like

x *= 2

And, of course, the constantly used operator:

x %= 2

So how does one extend a walrus operator if they ever decide to give in and
add it to the language just for completeness?

Sadly, a simple test shows they neglected to use a :+= operator in the
latest:

>>> (walrus := 2)

2
>>> walrus

2
>>> (wallrus :+= 2)

 File "<stdin>", line 1
 (wallrus :+= 2)
 ^
SyntaxError: invalid syntax

(Yes, I know how to spell walrus, but making a point.)

On a serious note, if it was ever considered a good idea, what would be an
acceptable sequence of symbols that might not break or confuse existing
programs and what would we call it? I mean what animal, of course.

What do these look like in some fonts? :+= :-= :*= :/= :%= 

Or do we not just add a colon in front and make it a tad different as in :=+
or :+=: or maybe realize the futility of perfection! After all, you can
easily use some functions to get a result such as:

x := func(x, "+", 5)
x := func_add(x, 5)

or many other work-arounds.

Can we all forget I asked? I am sort of being sarcastic.