[FIXED] How do I convert a complex number?

Issue

I built a calculator for a bio equation, and I think I've narrowed down the source of my problem, which is a natural log I take:

goldman = ((R * T) / F) * cmath.log(float(top_row) / float(bot_row))

print("Membrane potential: " + str(goldman) + "V"

My problem is that it will only display the output in a complex form:

Membrane potential: (0.005100608207126714+0j)V

Is there any way of getting this to print as a floating number? Nothing I've tried has worked.

Solution

Complex numbers have a real part and an imaginary part:

>>> c = complex(1, 0)
>>> c
(1+0j)
>>> c.real
1.0

It looks like you just want the real part... so:

print("Membrane potential: " + str(goldman.real) + "V"

Answered By - mgilson