itertools comments [Was: Re: RELEASED: Python 2.3a2]

Erik Max Francis max at alcyone.com
Fri Feb 21 03:27:20 CET 2003


Raymond Hettinger wrote:

> The x prefixes all predate generators and iterators.  They are
> associated
> with deprecated things like xreadlines.  X is used to mark errors.
> X-men are mutants.  Ex-girlfriends are not positive either.

Or, more concretely :-), the x prefix tends to indicate, "This has the
same functionality as the non-prefixed version, but potentially saves
memory by encapsulating the work in a proxy object."

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