Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment:

> Should this also produce warnings for `list` / `dict` / `set` literals?

No, because these cases are useless expressions, but they are not hidden bugs. 
The result is always False and does not rely on the implementation.

> SyntaxWarnings should be raised on problems with the *syntax* not for 
> ProgrammerMightBeDumb errors. There are a whole lot of things a programmer 
> not knowing the language could do wrong. But these are syntactically valid 
> expressions and it is not the purpose of a compiler to teach.

SyntaxErrors should be raised on problems with the syntax. SyntaxWarnings *can* 
be raised for the syntax which is valid but is definitely a bug.

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue34850>
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