After for the nth time writing awkward code like

if limit is None: 
    limit = len(mylist)

decided to see if there’s a better way. Looked into the walrus operator etc,but decided to test what I get with None.

Well, mylist[:None] works! No errors, I’d guess I get a copy of it same as mylist[:].

Will save me hundreds of lines in the future!

Docu about slice¹ is terse, says it uses range(start,end,step) under the hood with start and step defaulting to None. But range doesn’t accept None for all arguments! TODO for later I guess.