On 04/30, Yury Selivanov wrote: > On 2015年04月30日 1:56 PM, Ethan Furman wrote:
> I still want to see where my current grammar forces to use > parens. See [1], there are no useless parens anywhere. --> await -coro() SyntaxError --> await (-coro()) # not a SyntaxError, therefore parens are # forced >> In other words, a SyntaxError is nat any clearer than "AttributeError: obj >> has no __neg__ method" and it's not any clearer than "AwaitError: __neg__ >> returned not-awaitable". Those last two errors tell you exactly what you >> did wrong. > > This is debatable. "obj has no __neg__ method" isn't obvious > to everyone (especially to those people who aren't using > operator overloading). Good news! The error there is actually --> -object() TypeError: bad operand type for unary -: 'object' Which is definitely clear, even for those who don't do operator overloading. -- ~Ethan~ _______________________________________________ Python-Dev mailing list [email protected] https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com