[Python-Dev] Next version of PEP278 - universal newline support (original) (raw)

Guido van Rossum guido@python.org
Thu, 14 Mar 2002 13:31:41 -0500

Guido> I wonder if it would make sense to put a warning when people use Guido> f.read(n) on a file opened in text mode? I think f.read(n) is an Guido> almost sure sign that they're seeing the file as binary data. Guido> However, f.read() or f.read(-1) is used to slurp in text as well, Guido> so should not trigger the warning.

Guido> Opinions? Pass this off to PyChecker? I guess with the presence of PyChecker I'm getting a bit schizophrenic about whether warnings go in the Python byte compiler or in PyChecker. It warns about so many more things now than the compiler as it stands that it seems to me to be the more natural place to stick new warnings.

I don't think this is a good match for PyChecker, but I'll leat Neal think about that.

More importantly, I believe that "official" deprecation warnings should come from the Python interpreter, not rely on an add-on tool (no matter how nice).

--Guido van Rossum (home page: http://www.python.org/~guido/)