PythonQ 240-8XX Uživatelský manuál stáhnout pdf (Strana 19)

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Loops over arrays (2)

View array as one-dimensional and iterate over all elements:

for e in a.ravel():

print e

Use ravel() only when reading elements, for assigning it is better

to use shape or reshape ﬁrst!

For loop over all index tuples and values:

>>> for index, value in ndenumerate(a):

... print index, value

...

(0, 0) 2.0

(0, 1) 6.0

(0, 2) 12.0

(1, 0) 4.0

(1, 1) 12.0

(1, 2) 24.0

Numerical Python – p. 253/728

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PythonQ 240-8XX Uživatelský manuál Strana 19