elas tica schreef op 26/10/2022 om 21:01:
Quotes from The Python Language Reference, Release 3.10.8:
- Note that tuples are not formed by the parentheses, but rather by use of the
comma operator (p. 66)
- Note: If the object is a class instance and the attribute reference occurs on
both sides of the assignment operator (p. 86)
- The second half of the list, the augmented assignment operators, serve
lexically as delimiters, but also perform an operation (p. 15)
Do you agree with this use of the term "operator"?
It's a bit fuzzy, I guess. Comma, =, +=, *= etc. are in section 2.6
"Delimiters" and not in section 2.5 "Operators" of The Python Language
Reference, which would seem to imply that those are not operators. But
the text in section 2.6 then says "The second half of the list, the
augmented assignment _operators_, serve lexically as delimiters, but
also perform an operation.", so at least the augmented assignment
operators are seen as operators despite not being in the Operators section.
Because there is no such "comma operator" in Python as explained by the
official FAQ:
https://docs.python.org/3/faq/programming.html#what-s-up-with-the-comma-operator-s-precedence
That does seem to contradict the text in the language reference.
And, =, += and the like are not operators since (a=b), (a+=b), etc have no
value. There is no assignment operator instead there exists an assignment
statement. The only assignment operator I can figure out is the walrus operator.
I think that's a good point too. The language reference calls those
things 'delimiters', which doesn't feel like a good description either
for many of them. I find it weird to think of =, *+, +=as a delimiter.
Maybe that's why those things are called operators anyway instead of
delimiters in many places? Things like "Note: If the object is a class
instance and the attribute reference occurs on both sides of the
assignment _delimiter_" sound a bit weird I feel, even though completely
correct according to the language reference.
So yeah I think you have a point that the terminology regarding those
tokens is not very consistent at the least.
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