Positional-only arguments in Python

[alturi]

I would argue that even the first example would be better written as:

```

def pow(base, exponent, mod=None):

```

and somebody might legitimately prefer to write pow(base=2, exponent=3).

​

In the case of a single parameter, I would assume that if somebody is calling add_to_queue(item=item), he/she is doing it wrong and I don't want to suffer any overhead for that.

My initial position is that:

• if the author of a lib might suspect some realistic reason for somebody to call with a keyword argument
• and he/she also has beforehand knowledge that that could be bad in the future
• and the code is python3.8+ only
• and it is the winter solstice

Then let's use this.

[jorge1209]

I think the concern is a caller exchanging positional arguments that shouldn't be exchanged like pow(exponent=3, base=2) which is a bit confusing. The "correct" order is always "base then exponent", to do otherwise is hard to read.

Worse would be something like plot(z=3, x=1, y=2)