python-numpyFind Numpy array index by value

import numpy as np
a = np.array([1,1,2,1,2])
indexes = np.where(a == 2)ctrl + cyoutubegithub

`import numpy as np` load Numpy module for Python	`np.array` declare Numpy array
`[1,1,2,1,2]` sample array	`where(` returns indexes of found elements from array based on condition
`a == 2` sample condition (search for elements with value `2`)

import numpy as np
a = np.array([1,1,2,1,2])
indexes = np.where(a == 2)
print(indexes[0])

[2 4]