Python Tutorial 3.3 - Error Handling Basics

Welcome to the "Error Handling Basics" tutorial!

Overview

Error handling in Python lets you manage exceptions gracefully using the try, except, else, and finally keywords. This approach helps in preventing your program from crashing unexpectedly.

Key Concepts

• try Block:
  Contains the code that might throw an exception.

• except Block:
  Catches and handles exceptions.

• else Block:
  Executes code if no exceptions were raised.

• finally Block:
  Executes code regardless of whether an exception occurred or not.

Example

try:
    result = 10 / 0
except ZeroDivisionError:
    print("Error: You cannot divide by zero.")
else:
    print("Division successful.")
finally:
    print("This block always executes.")

Key Takeaways

• Place potentially error-prone code inside a try block.
• Handle specific exceptions in the except block.
• Use finally for cleanup actions that must run no matter what.

Happy coding!