When I run ~/.local/pyenv/versions/3.7.2/bin/python -m mypy /Users/bencreasy/test/nested/nested-2/test1.py I get: nested-2 is not a valid Python package nameIf I remove __init__.py, the message goes away.What is the behavior/output you expect?
x + 1 # Error: str + int is not valid if isinstance(x, int): # Here type of x is int. x + 1 # OK else: # Here type of x is str. x + 'a' # OK f(1) # OK f('x') # OK f(1.1) # Error Note Optional 类型,可选类型, Optional[X] 相当于Union[X,None]: from typi...
http://www.python.org/getit/ Quick start Mypy can be installed using pip: $ pip3 install mypy-lang Note that the package name ismypy-lang, notmypy. Currently, the version of mypy on PYPI is not compatible with Python 3.5. If you run Python 3.5 install directly form git: ...
type_analyser: mypy.typeanal.TypeAnalyser = ctx.api # type: ignore[assignment] if not type_analyser.allow_required: ctx.api.fail( "possibly.Possibly[] can only be used in a TypedDict definition", ctx.type, code=mypy.errorcodes.VALID_TYPE, ) return mypy.types.AnyType(mypy.types.Type...
mypy infers the types of [1, 2] and ["a", "b"] as list[int] and list[str] respectively. With the first definition of connect_objects, there is no choice of T that will make the call valid. But with the second definition, a list[int] is an Iterable[int], which is ...
Mypy is not a linter but rather a static type checking tool. You should install and use it no matter what Python linter you use. Mypy examines the type hints (aka type annotations) you put on your functions and variabl...
在Python中,当我在hasattr装饰器上调用@property时,hasattr函数实际上运行@property代码块。例如:一门课: class GooglePlusUser(object): def __init__(self, master): self.master = master def get_user_id(self): return self.master.google_plus_service.people().get(userId='me').execute()['id'] ...
Note that the package name ismypy-lang, notmypy. Currently, the version of mypy on PYPI is not compatible with Python 3.5. If you run Python 3.5 install directly form git: Now, if Python on your system is configured properly (else see "Troubleshooting" below), you can type-check a prog...
main.py:5: error: Variable "typing_extensions.ReadOnly" is not valid as a type [valid-type] main.py:5: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#variables-vs-type-aliases main.py:10: error: Invalid type comment or annotation [valid-type] ...
# mypy does not infer literals from strings this way. self.char = cast(ValidChar, char) This passes type checking. To get rid of cast, you can extract a helper function or method (playground): from typing import Literal, TypeGuard, get_args ValidChar = Literal["A", "B"...