[Python-3000] Draft pre-PEP: function annotations
greg.ewing at canterbury.ac.nz
Thu Aug 10 04:47:48 CEST 2006
Collin Winter wrote:
> one library might use string-based annotations to provide
> improved help messages, like so:
> def compile(source: "something compilable",
> filename: "where the compilable thing comes from",
> mode: "is this a single statement or a suite?"):
> Another library might be used to provide typechecking for Python
> functions and methods.
> def sum(*vargs: Number) -> Number:
And what are you supposed to do if you want to write
a function that has improved help messages *and*
> The difficulty inherent in writing annotation interpreting
> libraries will keep their number low and their authorship in the
> hands of people who, frankly, know what they're doing.
Even if there are only two of them, they can still
I think the idea of having totally undefined
annotations is fundamentally flawed.
More information about the Python-3000