Python try except

Try - Except :

Errors may occur while running a program such as invalid input , division by zero, file not found , wrong data type

If an error occurs and is not handled, the program crashes.

The try - except block allows Python to:

• catch the error
• handle it gracefully
• continue program execution

This is known as exception handling.

The try block lets you test a block of code for errors.

The except block lets you handle the error.

The else block lets you execute code when there is no error.

The finally block lets you execute code, regardless of the result of the try- and except blocks.

Syntax :

try: # code that may cause error except: # code to handle error

Example :

try: num = 10 / 0 except: print("Error occurred") #output Error occurred

Handling Specific Exceptions :

try: x = int("abc") except ValueError: print("Invalid number format") 

Handling Multiple Exceptions :

try: a = 10 / 0 except ZeroDivisionError: print("Division not allowed") except ValueError: print("Value error occurred")

Else Block :

try: x = int("10") except ValueError: print("Error") else: print("Conversion successful") 

Finally Block :

try: f = open("data.txt") except FileNotFoundError: print("File not found") finally: print("Task completed")