+1 on this, it seems very natural to me.
I don’t mean to downplay the concerns people have, but in my experience
teaching newbies, dictionaries take some time to wrap their heads around
anyway. So yes, they may be confused when + removes data, but they’d be
confused anyway :-)
And it would be less confusing than:
{**d1, **d2}
That means pretty much nothing to a newbie, and even if they do get what **
means, it’s still some version of “put the contents of these two ducts
together” — I can’t see how that is any less confusing than d1+d2.
As for expecting it to be lossless like list addition — if you don’t
understand that ducts can’t have duplicate keys, you’re don’t “get” dicts
anyway.
>> The problem is that dicts are complex objects with two pieces of
> >> information,
And they are with or without +, of course.
> Even better, if we had two engineers (key) named Anita and Carolyn
(values) and combined them into a group, do you expect one of them to
vanish?
Then a dict is not the data structure in which to store this data, plain
and simple.
You don’t use a key like “engineer” if you might have more than one
engineer!
This is completely independent of syntax.
-CHB
--
Christopher Barker, PhD
Python Language Consulting
- Teaching
- Scientific Software Development
- Desktop GUI and Web Development
- wxPython, numpy, scipy, Cython
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