Edge Case Handling

Common Edge Cases Here are the most common edge cases you should always consider: Handling None Values Handling Empty Collections Empty lists, strings, and dicts are falsy in Python, but you should often handle them explicitly: Division by zero and index-out-of-range errors are among the most common runtime crashes in data pipelines. A single guard clause at the start of a function is all it takes to make these errors safe and explicit. Boundary Conditions Pay special attention to boundary values: the first and last elements, minimum and maximum values: Defensive Programming A defensive programming approach handles edge cases at the start of every function: Putting It All Together Let us combine the patterns from this lesson into a realistic example. This data validation function uses guar