Suggested improvements to multiple return values exercise

I made this exercise a little more useful, IMHO. It won’t run on codecademy BUT it will run fine on google colab

target = input("Your target? ")
margin = input("Your margin? ")
def get_boundaries(target, margin):
#always a good idea to document your functions
  """takes two integers and calculates margin of risk tolerance.
  target and margin"""
  low_limit = target - margin
  high_limit = target + margin
  return low_limit, high_limit

low, high = get_boundaries(int(target),int(margin))
print("Low limit: "+str(low)+", high limit: "+str(high)+"\n")

#let's take a look at the function definition