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Why refactor?

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Why refactor?

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Common Code Smell #1 It’s too long!

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Code Smells: Long methods ● ● ● ○ ○ ○ ○

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Tool: Replace Method with Method Object

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Tool: Replace Method with Method Object

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Tool: Introduce a parameter object

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Common Code Smell #2: It’s not useful enough!

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Common Code Smell #3: OOP issues

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Code smell: Divergent change ● ● ● ○ ○

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Code smell: Shotgun surgery ● ● ● ○ ○

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Code smell: shotgun surgery

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Tool: Move Class

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Code smell: Parallel inheritance hierarchies ● ○ ● ● ○ ○

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Code Smell: Parallel inheritance hierarchies

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Tool: Move Class

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Tool: Extract Class

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Tool: Extract Class

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Tool: Replace Type Code with State

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Tool: Hide Delegate

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Tool: Hide Delegate

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Do I need to inherit this class?

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Lets talk Pythonic Code Smells!

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Codesmell: Unnecessary boilerplate code

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Dataclasses and attrs

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Dataclasses and attrs

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● (Expand) (Contract) (Transition)

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THANK YOU! @amandasopkin

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Sources Flat Icon: https://www.flaticon.com/ Refactoring Python by Brett Slatkin: https://www.youtube.com/watch?v=D_6ybDcU5gc Real Python: https://realpython.com/python-refactoring/ Pep 20: https://www.python.org/dev/peps/pep-0020/ Beyond Pep 8 by Raymond Hettinger: https://www.youtube.com/watch?v=wf-BqAjZb8M Refactoring by Martin Fowler: https://www.csie.ntu.edu.tw/~r95004/Refactoring_improving_the_design_of_existing_code.pdf