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Did you see that? Python said: NameError: name 'sqrt' is not defined. Python doesn’t know what square roots are—yet.
There is a Python module named math that includes a number of useful variables and functions, and sqrt() is one of those functions. In order to access math, all you need is the import keyword. When you simply import a module this way, it’s called a generic import.
Instructions
1.
You’ll need to do two things here:
- Type
import mathon line 2 in the editor. - Insert
math.beforesqrt()so that it has the formmath.sqrt(). This tells Python not only toimport math, but to get thesqrt()function from withinmath. Then hit Run to see what Python now knows.