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

1 Answer

Functions, are the unit that takes certain input and gives out output after performing certain manipulations.

For example, a calculator takes input and returns output after adding or subtracting or any other operations.

to describe a function in python we use a keyword, 'def'

def function_name ():
    ....
    ....code goes here....

to give an argument as input, we mention them inside the parenthesis.

def function_name(arg1, arg2, arg3, arg4...):
    arg1+arg2/arg3*arg4....
    return return_what_function_is_suppose_to_return

In above task...

def add(arg1, arg2):
    return arg1+arg2

To apply exception handling we do something like...

def add(a, b):
    try:
        return float(a) + float(b)
    except ValueError:
        return None