Knaph

Exceptions

The way a running program signals that something went wrong, so that code can catch the problem and carry on, or stop with a clear message instead of carrying on with nonsense.

Depth 1 · Foundation

You can catch the specific exceptions you expect with try and except (with else and finally), raise your own when a function gets a value it can't use, and follow an exception up through the calls that were running.

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Depths of understanding

  1. 1

    Foundation

    You can catch the specific exceptions you expect with try and except (with else and finally), raise your own when a function gets a value it can't use, and follow an exception up through the calls that were running.

Your path here

What's still between you and Exceptions, depth 1, in the order you can learn it.

  1. 1ProgramDepth 1 · Foundation · Program Basics
  2. 2ExpressionDepth 1 · Foundation · Program Basics
  3. 3Variables in codeDepth 1 · Foundation · Program Basics
  4. 4Program stateDepth 1 · Foundation · Program Basics
  5. 5Input and outputDepth 1 · Foundation · Program Basics
  6. 6Functions in codeDepth 1 · Foundation · Functions
  7. 7Return valuesDepth 1 · Foundation · Functions
  8. 8BooleansDepth 1 · Foundation · Control Flow
  9. 9ConditionalsDepth 1 · Foundation · Control Flow
  10. 10LoopsDepth 1 · Foundation · Control Flow
  11. 11Accumulator patternDepth 1 · Foundation · Control Flow
  12. 12Floating-point numbersDepth 1 · Foundation · Data Types
  13. 13Basic typesDepth 1 · Foundation · Data Types
  14. 14Character encodingDepth 1 · Foundation · Data Types
  15. 15StringsDepth 1 · Foundation · Data Types
  16. 16Type conversionDepth 1 · Foundation · Data Types
  17. 17ExceptionsDepth 1 · Foundation · Writing Correct Code

Where it fits