On Aug 22, 5:04 pm, Robert Dodier <[EMAIL PROTECTED]> wrote:
> William Stein wrote:
> > sage: data = [-1, 2, 3]
> > sage: data = ma_eval('data /. x_?(# < 0 &) -> 0')
> > sage: data
> > [0, 2, 3]
> Wouldn't it be much clearer, and much less hackish, to just make
> them functions and stay entirely within Python?
For me, python is a different playground than mma and unless there
isn't a real reason i don't like to import mma syntax - or any other.
Perhaps in a special mode, but that's a different setting (e.g.
providing a directory of mma .nb files (or .m for matlab/octave) and
extracting functions and evaluating them by parsing those files)
this example is for me better done by
>>> data = [-1,2,3]
>>> gt0 = lambda x: x>0 and x or 0
>>> map(gt0, data)
[0, 2, 3]
in python - or more geeky
>>> map(lambda x: x>0 and x or 0, data)
[0, 2, 3]
H
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