On 6/7/2022 4:59 PM, Chris Angelico wrote:
On Wed, 8 Jun 2022 at 00:36, <[email protected]> wrote:
Hello!
Do you know if there has been discussions around why is the default argument is
positional only in the dict methods get and pop?
I think
```
d.get(key, default=3)
```
way more readable than
```
d.get(key, 3)
```
specially since max and min builtin functions use default as a keyword argument.
With min and max, it MUST be a keyword argument, because positional
arguments are the values to be compared. So I think the main reason is
"because nobody ever bothered to do it". If there's enough value in
it, that could probably be changed, although mere consistency alone
isn't a very strong argument.
I suspect it's been this way because the API is so old. Now that we have
Argument Clinic it would be easier to implement as a keyword argument.
But there may also be a performance issue with keyword arguments vs.
positional. People are touchy when it comes to dicts!
Eric
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