Python Ninja bootcamp 29-Error & Exception(try, except & finally)

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In this Python lecture, we will learn about the Error & Exception(try, except & finally).

"When Python encounters error while running the code, it stops execution and raises an exception".

Let's see some example-

Error & Exception 

1/0

>>ZeroDivisionError: division by zero

1 + 'string'

>>TypeError: unsupported operand type(s) for +: 'int' and 'str'

if 2<3
    print('Hi')

>>SyntaxError: invalid syntax


Try, except,else & finally

def division(a,b):
    try:
        result=a/b
    except Exception:
        print("Sorry! Division is not possible")
    else:
        print("sum of a and b =",result) 

division(1,0) 

>>Sorry! Division is not possible

def division(a,b):
    try:
        result=a/b
    except Exception as e:
        print(e)
    else:
        print("sum of a and b =",result)

division(1,0)

>>division by zero

def division(a,b):
    try:
        result=a/b
    except Exception as e:
        print(e)
    else:
        print("sum of a and b =",result)

division(1,'string')

>>unsupported operand type(s) for /: 'int' and 'str'

def division(a,b):
    try:
        result=a/b
    except Exception as e:
        print(e)
    else:
        print("sum of a and b =",result)

division(1,2)

>> sum of a and b = 0.5

def division(a,b):
    try:
        result=a/b
    except Exception as e:
        print(e)
    else:
        print("sum of a and b =",result)
    finally:
        print("Executing finally block.....")

division(1,2)

>> sum of a and b = 0.5
     Executing finally block.....

division(1,0)

>> division by zero
     Executing finally block.....

EDITS ARE WELCOMED!!

In the next Blog, we will discuss Q&A 5th 

https://sngurukuls247.blogspot.com/2018/12/python-ninja-bootcamp-30-q-5th.html

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