#20743: Parent.list() should return an immutable tuple
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Reporter: jsrn | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-7.3
Component: categories | Resolution:
Keywords: parent, immutable | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by kedlaya):
Replying to [comment:5 vbraun]:
> Types (class names) are nouns:
> * list
> * tuple
>
> Methods are verbs
> * list
>
> Its perhaps unfortunate that there is no greater selection of
appropriate verbs in English, but that linguistic details shouldn't be
cause to have some ridiculous bug in Sage.
A quick look at the Python docs
(https://docs.python.org/3/library/stdtypes.html) shows that the following
are all methods of basic types:
{{{
math.floor()
math.ceil()
int.bit_length()
float.hex()
list.index()
str.title()
str.upper()
dict.keys()
dict.values()
dict.items()
}}}
This is definitely a minority of the methods one finds on that page, but
it makes the point that insisting that method names be verbs is a good
design principle, not an absolute rule; it definitely gets overridden when
there is no simple alternative.
For that matter, sometimes one can't even tell: is `foo.count()` a noun or
a verb? It would be pretty un-Pythonic (and perhaps unfair to non-English
speakers) to have `list` mean completely different things when interpreted
as a noun vs. a verb, in addition to confusing the defined terms `list`
and `tuple`.
--
Ticket URL: <http://trac.sagemath.org/ticket/20743#comment:11>
Sage <http://www.sagemath.org>
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