On 18/07/2020 11:09, Steven D'Aprano wrote:
On Sat, Jul 18, 2020 at 10:58:17AM +0200, Federico Salerno wrote:
We don't, after all,
confuse function calls for references to a function, or vice-versa.
Beginners do. Frequently. Sometimes it is quite a hurdle for them to
learn to write `function()` instead of `function`.
And even experienced developers sometimes forget to put parentheses
after file.close, or at least we used to before context managers.
(I know I did. I don't think I'm alone.)
I consider myself far from being an experienced developer, but I cannot
in all honesty say I'm likely to forget parens after file.close any more
than after any function call. Perhaps it comes down to being used to
some other language I have never worked with.
I can see why beginners would find the distinction between func and
func() to be challenging at first, but that is something that subsides
relatively often. Most likely way before one needs to be aware of the
intricacies of a complex feature such as pattern matching, considering
Python, contrary to e.g. Rust or functional languages, is not built
around that concept and has survived without it thus far. Pattern
matching would be useful and nice, but not essential to the point that a
beginner would have to learn it before getting a solid grasp on how
functions are called or referenced.
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