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

Posted by richard shu
richard shu
Courses Plus Student 390 Points

Try Block?

I'm not quite sure what the try block is exactly. also can someone give me a clear example how to solve this problem?

I've seen several examples on a page i stumbled on, and all of them make sense, but the syntax doesn't work.

please and thank you

trial.py 
def add(num1, num2):
try:
    a = float (num1)
    b = float (num2)
    return(a + b)
except ValueError:
    return = None
else:
    return = total

2 Answers

Ari Misha
Ari Misha
19,323 Points
Ari Misha
Ari Misha
19,323 Points

Hiya Richard! Your code is almost there but just make couple of following changes. First off, "total" is not defined. Secondly, remove "=" from both "return" statements. Third, remove the last statement in your code and move the "return(a + b)" expression in else block. Do these chages in your code and you're good to go. (:

richard shu
richard shu
Courses Plus Student 390 Points

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

i don't think i followed your instructions correctly haha

Ari Misha
Ari Misha
19,323 Points
Ari Misha
Ari Misha
19,323 Points

Alright! Try this:

def add(a, b):
    try:
        a = float(a)
        b = float(b)
    except ValueError:
        return None
    else:
        return a + b
richard shu
richard shu
Courses Plus Student 390 Points

thankyou it was that easy haha thankyouuu