count how many times a value appears in array python
>>> [1, 2, 3, 4, 1, 4, 1].count(1)
3count how many times a value appears in array python
>>> [1, 2, 3, 4, 1, 4, 1].count(1)
3count occurrence in array python
arr = np.array( [1, 2, 3, 2, 1, 2])
occ = np.count_nonzero(arr==0)
print(occ)
0
occ = np.count_nonzero(arr==1)
print(occ)
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