preserve_defaults.py

from __future__ import annotations

from datetime import datetime
from typing import Any

CONSTANT = 'foo'
SENTINEL = object()


def foo(name: str = CONSTANT,
        sentinel: Any = SENTINEL,
        now: datetime = datetime.now(),
        color: int = 0xFFFFFF,
        *,
        kwarg1,
        kwarg2 = 0xFFFFFF) -> None:
    """docstring"""


class Class:
    """docstring"""

    def meth(self, name: str = CONSTANT, sentinel: Any = SENTINEL,
             now: datetime = datetime.now(), color: int = 0xFFFFFF,
             *, kwarg1, kwarg2 = 0xFFFFFF) -> None:
        """docstring"""

    @classmethod
    def clsmeth(cls, name: str = CONSTANT, sentinel: Any = SENTINEL,
                now: datetime = datetime.now(), color: int = 0xFFFFFF,
                *, kwarg1, kwarg2 = 0xFFFFFF) -> None:
        """docstring"""


get_sentinel = lambda custom=SENTINEL: custom
"""docstring"""


class MultiLine:
    """docstring"""

    # The properties will raise a silent SyntaxError because "lambda self: 1"
    # will be detected as a function to update the default values of. However,
    # only prop3 will not fail because it's on a single line whereas the others
    # will fail to parse.

    prop1 = property(
      lambda self: 1, doc="docstring")

    prop2 = property(
      lambda self: 2, doc="docstring"
    )

    prop3 = property(lambda self: 3, doc="docstring")

    prop4 = (property
    (lambda self: 4, doc="docstring"))

    prop5 = property\
    (lambda self: 5, doc="docstring")