Efficient, built-in way to determine if string has non-ASCII chars outside ASCII 32-127, CRLF, Tab?

Mon Oct 31 17:47:06 EDT 2011

On 10/31/2011 03:54 PM, python at bdurham.com wrote:
> Wondering if there's a fast/efficient built-in way to determine
> if a string has non-ASCII chars outside the range ASCII 32-127,
> CR, LF, or Tab?
>> I know I can look at the chars of a string individually and
> compare them against a set of legal chars using standard Python
> code (and this works fine), but I will be working with some very
> large files in the 100's Gb to several Tb size range so I'd
> thought I'd check to see if there was a built-in in C that might
> handle this type of check more efficiently.
>> Does this sound like a use case for cython or pypy?
>> Thanks,
> Malcolm
>How about doing a .replace() method call, with all those characters 
turning into '', and then see if there's anything left?
-- 
DaveA