How to count the occurrence of certain item in an ndarray in Python?

In Python, I have an ndarray y that is printed as array([0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1])

I'm trying to count how many 0s and how many 1s are there in this array.

But when I type y.count(0) or y.count(1), it says

numpy.ndarray object has no attribute count

What should I do?

    >>> 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}

Non-numpy way :

Use collections.Counter;

    >> import collections, numpy

    >>> a = numpy.array([0, 3, 0, 1, 0, 1, 2, 1, 0, 0, 0, 0, 1, 3, 4])
    >>> collections.Counter(a)
    Counter({0: 7, 1: 4, 3: 2, 2: 1, 4: 1})

From: stackoverflow.com/q/28663856

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