What is exception handling in Python ?

Definition

• Exception handling in Python is a mechanism that allows a program to deal with errors or exceptions that occur during execution without crashing. It enables the program to respond to different error conditions gracefully.

Examples

try:

    Result = 10 / 0  # This will raise a zerodivisionerror

except zerodivisionerror:

    print("Cannot divide by zero!")

finally:

    print("This will always execute.")

Output

Cannot divide by zero!

This will always execute.

Features

• Try Block: Code that may raise an exception is placed inside the try block.
• Except Block: Catches and handles the specific exception that occurs.
• Finally Block: Executes code regardless of whether an exception occurred or not, often used for cleanup.
• Else Block: Executes if no exception was raised in the try block. 

Advantages

• Prevents program crashes by handling errors
• Makes the code more readable and easier
• Ensures that resources like files or network connections are properly closed

Uses

• Dealing with network-related errors such as timeouts or connection issues.
• Managing errors that arise from invalid user inputs
• Handling errors like file not found