[Python-3000] a plea : invalid comparisons should raise an exception
collinw at gmail.com
Mon Apr 23 19:12:03 CEST 2007
On 4/23/07, Helmut Jarausch <jarausch at igpm.rwth-aachen.de> wrote:
> Some years ago, I was allured to convert from Perl to Python.
> The main argument was that Python is much more secure.
> That turned out to be true with one big exception.
> The following lines would run just fine (as equivalent
> Perl code)
> from cStringIO import StringIO
> Inp= StringIO('Guido 10')
> for line in Inp:
> (Name,Age)= line.split()
> if Age > 64 :
> print Name,"has retired"
> But with Python it returns a very unexpected result
> without any evidence of a problem.
> So, please make comparisons raise an exception (at least
> optionally) if "uncompatible" types are compared.
This is already going to happen; see
http://www.python.org/dev/peps/pep-3100/#core-language, 12th bullet
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