Re:Formatting code should be unnecessary
by maratc on Monday September 08, 2025 @01:58PM
(#45171582)
Ok, we're then back to `print` example:
print(
'Hello there from a very long line abcdefghijklmnopqrstuvwxyz',
sep=' ',
end='\n',
file=None,
flush=False,
)
All of the existing named parameters to `print()` function are already provided, and that standard function is highly unlikely to change. Should I add another string to `print`, I will have to do it before the named parameters anyway. There is no sense in the trailing comma here however you look at it.Edit: sorry for using single quotes, in my 20 years of writing Python it was never an issue, but now with `black` it apparently is.
Re:Formatting code should be unnecessary
by iainmerrick on Tuesday September 09, 2025 @11:35AM
(#45183454)
I think this boils it down to the essence. Whether you use a trailing comma here, and whether you use single or double quotes, is just bike-shedding. If there's an automated tool that can make a consistent choice everywhere, that's worthwhile.
No, the argument is quite specifically that a one line diff to add a new argument/element to the end of a list is preferable to a two line diff to do the same thing. The presence of the trailing comma is necessary to achieve that only when elements are on their own line.