Python Type Hints
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Python type hints allow for adding type information to function and method definitions to help with editor/IDE features like autocompletion, linting tools, and refactoring. Python 3.5 introduced type hints as specified in PEP 484, with types like int, float, str, List, Dict, and Union to define expected argument and return types. While Python remains dynamically typed, type hints enable static type checking tools and help communicate API usage to users.
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Python Type Hints
- 2. PYTHON • python 2 e 3 • Fortemente tipada • Dinamicamente tipada
- 5. TIPAGEM DINÂMICA - o que pode ser num? - o que ela retorna? - e a documentação?
- 7. TIPAGENS DINÂMICAS terra typescript ruby 3 python 3.5 hack
- 9. WHY? • Editors/IDEs • Linter capabilities • Documentation • Refactoring
- 11. TYPES int # integer objects of arbitrary size float # floating point number bool # boolean value str # unicode string bytes # 8-bit string object # the common base class List[str] # list of str objects Dict[str, int] # dictionary from str to int Iterable[int] # iterable object containing ints Sequence[bool] # sequence of booleans
- 12. ACABOU A MAGIA?
- 13. Any # dynamically typed value Union[str, bytes] # set of expected types for a single argument Callable # lambda and functions objects AnyStr # equivalent toTypeVar('AnyStr', str, bytes) e mais…
- 15. IGNORINGTYPE CHECKER @no_type_check decorator on classes and functions a # type: ignore comment on arbitrary lines
- 17. PYHTON 3.5 previsão:13 de setembro de 2015
- 18. REFERÊNCIAS • http://mypy-lang.org/ • http://sdtimes.com/python-3-5-include-type- hinting/ • https://www.youtube.com/watch?v=2wDvzy6Hgxg