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robot.model.fixture

create_fixture 

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create_fixture(
    fixture_class: Type[T],
    fixture: T | DataDict | None,
    parent: TestCase | TestSuite | Keyword | UserKeyword,
    fixture_type: str,
) -> T

Create or configure a fixture_class instance.

Source code in src/robot/model/fixture.py 
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def create_fixture(fixture_class: Type[T],
                   fixture: 'T|DataDict|None',
                   parent: 'TestCase|TestSuite|Keyword|UserKeyword',
                   fixture_type: str) -> T:
    """Create or configure a `fixture_class` instance."""
    # If a fixture instance has been passed in update the config
    if isinstance(fixture, fixture_class):
        return fixture.config(parent=parent, type=fixture_type)
    # If a Mapping has been passed in, create a fixture instance from it
    if isinstance(fixture, Mapping):
        return fixture_class.from_dict(fixture).config(parent=parent, type=fixture_type)
    # If nothing has been passed in then return a new fixture instance from it
    if fixture is None:
        return fixture_class(None, parent=parent, type=fixture_type)
    raise TypeError(f"Invalid fixture type '{type(fixture).__name__}'.")