A placeholder object for optional dependencies.
from unavailable_object import UnavailableObject
try:
import optional_module
except ImportError:
optional_module = UnavailableObject("optional_module")
To not disturb the type checker, the alternative definition of optional_object should be guarded by if not TYPE_CHECKING
and type annotations put in quotes:
from typing import TYPE_CHECKING
from unavailable_object import UnavailableObject
try:
import optional_module
except ImportError:
if not TYPE_CHECKING:
optional_module = UnavailableObject("optional_module")
def foo(arg: "optional_module.SomeType") -> None:
pass
FAQs
Optional Object
We found that unavailable-object demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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