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

jamie Macdiarmid
jamie Macdiarmid
2,048 Points
Posted by jamie Macdiarmid
jamie Macdiarmid
2,048 Points

How far off am I?

Am I close?

trial.py 
try add(num1, num2):
      return float(num1) + float(num2)
except ValueError:
      return (None)
else:
      return(num1 + num2)

1 Answer

Haider Ali
.a{fill-rule:evenodd;}techdegree seal-36
Haider Ali
Python Development Techdegree Graduate 24,728 Points

Hi Jamie, you were fairly close but immediately, I spotted a few mistakes. Firstly, you have not used the def keyword to define your function and instead have written try. Once you change this, you then need to go into the function and add in the try block. Secondly, return is not a function so no parenthesis are needed around None. Finally, on the last line, you forgot to turn num1 and num2to floats before you returned them. After you correct your code, it should look like this:

def add(num1, num2):
  try:
    float(num1) + float(num2)
  except ValueError:
    return None
  else:
    return float(num1) + float(num2)

Regards, Haider

jamie Macdiarmid
jamie Macdiarmid
2,048 Points
jamie Macdiarmid
jamie Macdiarmid
2,048 Points

Thanks Haider. I really appreciate your time.