Faster alternatives to numpy.argmax/argmin which is slow

Question

I am using a lot of argmin and argmax in Python.

Unfortunately, the function is very slow.

I have done some searching around, and the best I can find is here

Answer 1

For those that came for a short numpy-free snippet that returns the index of the first minimum value:

def argmin(a):
    return min(range(len(a)), key=lambda x: a[x])
a = [6, 5, 4, 1, 1, 3, 2]
argmin(a)  # returns 3