[Python-Dev] Revising RE docs
Stephen J. Turnbull
stephen at xemacs.org
Thu Sep 1 07:41:45 CEST 2005
>>>>> "Greg" == Greg Ewing <greg.ewing at canterbury.ac.nz> writes:
Greg> Stephen J. Turnbull wrote:
>> But you could have string objects (or a derivative) grow a
>> "compiled_regexp" attribute internally.
Greg> That would make the core dependent on the re module, which I
Greg> think would be a bad idea.
Greg> Personally I like the way the compilation step is made at
Greg> least somewhat explicit. Regular expressions are not
Greg> strings; a string is just one way of representing a regular
Greg> expression. There could potentially be other representations
Greg> that compile to the same re object.
I guess I agree, but I would put the emphasis elsewhere. Something
like, think of the call to compile() as a declaration that this string
(or other representation) represents a regular expression. The actual
compilation is an accidental side effect: it could be postponed to the
first call of .match() or .search().
So I guess I would prefer a nomenclature like
r = re.RegExp (string)
r = re.compile (string)
Not a big deal though.
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