Python Exception Handling

The 'try', 'except', and 'finally' blocks.

* It's essential to handle exceptions properly to make your code more robust and user-friendly.

Python - Exception Handling:

Exception handling in Python allows you to gracefully manage errors that occur during the execution of your code. In Python, the 'try', 'except', and 'finally' blocks are used for error handling and cleanup operations. Here's a brief overview of each block:

1. try: The 'try' block is used to wrap the code that might raise an exception. If an exception occurs within this block, Python searches for an 'except' block that matches the type of exception raised.

2. except: The 'except' block catches and handles exceptions raised within the 'try' block. You can specify which exceptions you want to catch, and you can have multiple 'except' blocks to handle different types of exceptions.

3. finally: The 'finally' block is optional and is used to define cleanup actions that must be executed regardless of whether an exception occurred. This block is typically used to release resources, close files, or perform other cleanup operations.

Here's a basic example:

PDF Copy Code
    # Code that might raise an exception
    x = int(input("Enter a number: "))
    result = 10 / x
    print("Result:", result)

except ZeroDivisionError:
    print("Error: Cannot divide by zero")

except ValueError:
    print("Error: Please enter a valid number")

    # Cleanup code (executed regardless of whether an exception occurred)
    print("Cleanup: Exiting the program")
Enter a number: 5
Result: 2.0
Cleanup: Exiting the program

Note: It's worth noting that the finally block is executed even if there is a return statement in the try or except block.

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