Does Python really follow its philosophy of "Readability counts"?

Terry Reedy tjreedy at
Thu Jan 15 21:29:33 CET 2009

Paul Rubin wrote:
> r <rt8396 at> writes:
>> So what was the fatal error, care to post a traceback?
> Usually it's "expected to find some value but got None", or got a
> list, or expected some structure but got a different one, or some
> field was missing, etc.  It's not a single traceback, it's a recurring
> theme in developing this stuff.  

I do not see any connection, really, between what you describe above and 
your desire for static type-checking expressed elsewhere.  When I was 
regularly doing analysis of empirical data files, I learned (sometimes 
the hard way, as you describe above) to **ALWAYS** run preliminary 
checks of all fields through the entire file so I would know the actual 
range of values of each and whether the ranges comported with the 
requirements of the intended analyses.  The principle was/is the same 
whether using BMDP, SAS, C, or Python.

Terry Jan Reedy

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