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Python Python Basics (2015) Logic in Python Try and Except

V G
V G
3,087 Points
Posted by V G
V G
3,087 Points

What's wrong with this code?

I think something is wrong with the try block.

trial.py 
def add(a, b):
    return(float(a) + float(b))
try:
    float(input(a, b))
except ValueError:
    return None
else:
    return(a + b)

2 Answers

Ben Slivinn
Ben Slivinn
10,156 Points
Ben Slivinn
Ben Slivinn
10,156 Points

The logic is that you get the input from the add function itself, add(a, b), so there is no need in return(float(a) + float(b)) anymore, same for float(input(a,b)) Then you check with try\except the data provided to the function, you assign the input to a float. If it's not possible then python will rise ValueError that we will catch with 'except', and return None. Every other possibility will add both numbers, and as they already assigned as floats, we will return float value.

def add(num1, num2):
  try:
    num1 = float(num1) 
    num2 = float(num2)
  except ValueError:
    return None
  else:
    num = num1 + num2
  return num
V G
V G
3,087 Points
V G
V G
3,087 Points

Thanks

Ben Slivinn
Ben Slivinn
10,156 Points
Ben Slivinn
Ben Slivinn
10,156 Points

Sorry, but I missed that you are talking about task 3... Please check my edited answer, I hope its all clear now. Good luck!