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

Emmanuel Figueroa Escudero
Emmanuel Figueroa Escudero
1,724 Points

how i can use the module try?

i dont undestain how to use the module try before i convert the number in float

trial.py
def  add (x, y):
try:
    numb1 = float (input("Give me a number : "))
    numb2 = float (input("Give me a number : "))              
except ValueError:
    return None
else:
    return (x +y)
add (numb1 ,numb2)

2 Answers

Cindy Lea
PLUS
Cindy Lea
Courses Plus Student 6,485 Points

Theres a few things you need:

def add(x, y)::
try: a = float(x)
b = float(y) except ValueError: return None else:
return a + b

Russell Sawyer
seal-mask
.a{fill-rule:evenodd;}techdegree
Russell Sawyer
Front End Web Development Techdegree Student 15,705 Points

Your code is very close. First you need to indent the try, except and else statements so they are inside the function. Second, in your try statement you just need to remove the input statements and use the arguments passed into the function. Third, return statements don't use parentheses. Also, to pass the challenge you need to use the same two variables throughout.

def add(numb1, numb2):
    try:
        numb1 = float(numb1)
        numb2 = float(numb2)
    except ValueError:
        return None
    else:
        return numb1 + numb2