How can I take the square root of -1 using python?

Question

When I take the square root of -1 it gives me an error:

invalid value encountered in sqrt

How do I fix that?

///         


        

Answer 1

I just discovered the convenience function numpy.lib.scimath.sqrt explained in the sqrt documentation. I use it as follows:

>>> from numpy.lib.scimath import sqrt as csqrt
>>> csqrt(-1)
1j