python-numpyHow to count unique values

import numpy as np
a = np.array([1,1,2,1,2])
uniq = np.unique(a).sizectrl + cyoutubegithub

`import numpy as np` load Numpy module for Python	`np.array` declare Numpy array
`[1,1,2,1,2]` sample array	`.unique(` returns unique values only from specified array
`.size` attribute contains number of elements in an array	`uniq` will contain number of unique elements

import numpy as np
a = np.array([1,1,2,1,2])
uniq = np.unique(a).size
print(uniq)