wemake-services / safe-assert Goto Github PK

Dependabot couldn't authenticate with https://pypi.python.org/simple/.

You can provide authentication details in your Dependabot dashboard by clicking into the account menu (in the top right) and selecting 'Config variables'.

View the update logs.

Suppose you have following test code:

from safe_assert import safe_assert


class Foo:

    def __init__(self):
        self.value: int | None = None

    def set_value(self, value: int | None):
        self.value = value


def test_foo():

    foo = Foo()
    safe_assert(foo.value is None)
    foo.set_value(1)
    safe_assert(isinstance(foo.value, int))
    assert foo.value == 1

with safe-assert 0.4.0 and mypy 1.9.0 + --warn-unreachable, you will get:

(venv) niko@niko-ubuntu-home:~/code/myproj$ python -m mypy tests/test_foo.py  --warn-unreachable
tests/test_foo.py:17: error: Statement is unreachable  [unreachable]
Found 1 error in 1 file (checked 1 source file)

whish tells that foo.set_value(1) is not reachable. This happens due to the NoReturn return value of safe_assert. Also VS Code Pylance will tell that foo.set_value(1) and anything below it is unreachable.