np array value count
unique_elements, counts_elements = np.unique(a, return_counts=True)np array value count
unique_elements, counts_elements = np.unique(a, return_counts=True)numpy count the number of 1s in array
a = numpy.array([0, 3, 0, 1, 0, 1, 2, 1, 0, 0, 0, 0, 1, 3, 4])
unique, counts = numpy.unique(a, return_counts=True)
dict(zip(unique, counts))
{0: 7, 1: 4, 2: 1, 3: 2, 4: 1}count values in numpy list python
>>> import numpy
>>> y = np.array([1, 2, 2, 2, 2, 0, 2, 3, 3, 3, 2, 2])
>>> numpy.count_nonzero(y == 1)
1
>>> numpy.count_nonzero(y == 2)
7
>>> numpy.count_nonzero(y == 3)
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