NumPy TutorialLesson 11Free preview

NumPy Array Iterating

This lesson is part of NumPy · All levels

Summary

NumPy array iteration can be performed with regular for iterations for a one-dimensional array, whereas a multidimensional array requires a np.nditer function to make each element affordable. To get the index and value pairs, np.ndenumerate is available. Both of these functions facilitate the processing of elements that have a layered structure.

Key points

For x in arr works directly on the 1D array.
It goes through all the elements of the multidimensional array.
Np.ndenumerate produces a pair (index, value).
'external_loop' makes the iteration yields pieces per line.

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