[FIXED] Numpy: Find the maximum length of arrays inside another array

Issue

I have a numpy array as the following:

import numpy as np
arr = np.array([np.array([1]),np.array([1,2]),np.array([1,2,3]),np.array([1,3,4,2,4,2])])

I want a nice numpy function, which gives me the maximum length of the arrays inside my arr array. So I need a numpy function, which return for this example 6.

This is possible with iteration, but I am looking for a nicer way, perhaps even without map()

Any function inside tensorflow or keras would also be possible to use.

Solution

We could do:

max(map(len, arr))
#6

Answered By - ansev