Error?

[Zombie_Programming]

Using eval() on user input is a really bad thing. A user could enter code, for example, to delete all the files on your drive!

I understand the consequences of using eval, I was simply trying to produce an example for the person to go off of. You could also get a and b in different input statements, like below.

import math
  
def pythag( a, b, c1):
  
    if(c1 == 'c') :
        c = math.sqrt(pow(a, 2) + math.pow(b, 2))
    else :
        c = math.sqrt(pow(a,2) - math.pow(b,2))
    return c
  
  
a = float(input("Pythagorean theorem, Enter side A"))
b = float(input("Enter side B and I will solve for C\n"))
print("Side C is equal to", pythag(a, b,'c'))
  
a = float(input("Pythagorean theorem, Enter side B"))
b = float(input("Enter side C and I will solve for A\n")) 
print("Side A is equal to", pythag(b, a,'a'))
  
a = float(input("Pythagorean theorem, Enter side A"))
b = float(input("Enter side C and I will solve for B\n"))
print("Side B is equal to", pythag(b, a,'b'))