Function _raise_if_any_duplicate_dimensions

xarray/namedarray/core.py:1165–1172

(
    dims: _Dims, err_context: str = "This function"
)

def _raise_if_any_duplicate_dimensions(
    dims: _Dims, err_context: str = "This function"
) -> None:
    if len(set(dims)) < len(dims):
        repeated_dims = {d for d in dims if dims.count(d) > 1}
        raise ValueError(
            f"{err_context} cannot handle duplicate dimensions, but dimensions {repeated_dims} appear more than once on this object's dims: {dims}"
        )