What does numpy.sum(img==1) mean in the Python numpy library?

Question

Python

I thought that the default value, but why are there then two = ?

Answer 1

Counts the number of elements equal to "1"

>>> a = numpy.array([0,1,1,0,1,1,1,0,0,1])
>>> numpy.sum(a==1)
6
>>> numpy.sum(a==0)
4