Python program to demonstrate try-except block…

1.Why we need try-except block ?

Ans: Many times the error is coming can be any type syntax,zero division etc. To give protection from attacker and for understanding of non technical person we using try-except block.

2.What is the example of this ?

Ans: The following are some examples :-

• 

Here we can easily see that in first line is the problem. So,attacker can easily figure out in which line he/she can stole data.

And also it is hard for normal user to understand what is the program wants to tell.

3.just show how can we solve it ?

Ans : use try-except block~~~……….

a = "hello
try:
    print(a)
except SyntaxError:
    print("Hello")

Output:

Hello

    

4.try – except – else block use.

Ans : The else block apply when try block execute.

a = 10/2

try:
    print(a)
except ZeroDivisionError:
    print("Number is not     
    divisible by         
    zero !")
else:
    print("The number is
            odd number !  
            ")

output :

5
The number is odd number !

●●● If try – exception not catch the error ,the else block applies ●●●

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