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?

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Answer 1

Others have probably suggested more desirable methods, but just to add to the conversation, you could always multiply any number less than 0 (the value you want the sqrt of, -1 in this case) by -1, then take the sqrt of that. Just know then that your result is imaginary.