Class BasicIndexer

xarray/core/indexing.py:477–503

Tuple for basic indexing. All elements should be int or slice objects. Indexing follows NumPy's rules for basic indexing: each axis is independently sliced and axes indexed with an integer are dropped from the result.

class BasicIndexer(ExplicitIndexer):
    """Tuple for basic indexing.

    All elements should be int or slice objects. Indexing follows NumPy's
    rules for basic indexing: each axis is independently sliced and axes
    indexed with an integer are dropped from the result.
    """

    __slots__ = ()

    def __init__(self, key: tuple[BasicIndexerType, ...]):
        if not isinstance(key, tuple):
            raise TypeError(f"key must be a tuple: {key!r}")

        new_key = []
        for k in key:
            if isinstance(k, integer_types):
                k = int(k)
            elif isinstance(k, slice):
                k = as_integer_slice(k)
            else:
                raise TypeError(
                    f"unexpected indexer type for {type(self).__name__}: {k!r}"
                )
            new_key.append(k)

        super().__init__(tuple(new_key))


class OuterIndexer(ExplicitIndexer):