Is there a NumPy function to return the first index of something in an array?

Question

I know there is a method for a Python list to return the first index of something:

>>> l = [1, 2, 3]
>>> l.index(2)
1

Is

Answer 1

You can also convert a NumPy array to list in the air and get its index. For example,

l = [1,2,3,4,5] # Python list
a = numpy.array(l) # NumPy array
i = a.tolist().index(2) # i will return index of 2
print i

It will print 1.