Python math module

Question

I have been using the built-in functions of Exponentiation and logarithms module in Python. But everytime I get the following error:

NameError: name 'sqrt' is not defined
 

I have tried using math.sqrt(4),sqrt(4) and sqrt(4.0) as substitutes but even these didn't work. Can anyone tell me what is wrong?

Answer 1

pow is built into the language but you have to import math first.

Try the following:

import math
math.sqrt(4)