Python nested looping Idiom

>>> for x,y,z in itertools.product(range(2), range(2), range(3)):...     print x,y,z... 0 0 00 0 10 0 20 1 00 1 10 1 21 0 01 0 11 0 21 1 01 1 11 1 2

python loops for-loop foreach idioms

If you've got numpy as a dependency already, numpy.ndindex will do the trick ...

>>> for x,y,z in np.ndindex(2,2,2):...     print x,y,z... 0 0 00 0 10 1 00 1 11 0 01 0 11 1 01 1 1

python loops for-loop foreach idioms

import itertoolsfor x, y, z in itertools.product(range(x_size), range(y_size), range(z_size)):    pass # do something here

From the docs:

Cartesian product of input iterables.
Equivalent to nested for-loops in a generator expression.
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