[Numpy-discussion] Extracting all the possible combinations of a grid

Stephen McInerney spmcinerney@hotmail....
Fri Sep 21 22:47:57 CDT 2007


Gael,

The pure Pythonic solution is a list comprehension involving multiple sequences:

x = range(0,n)
y = x
z = x
t = [(xx,yy,zz) for xx in x for yy in y for zz in z]

You don't need subscripting, or recursive fns, or Knuth.
Runtime is almost instant (for n=10).
All the NumPy solutions look more painful, so if needs be, transform the NumPy sequences to Python ones.

Regards,
Stephen
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