(self, index)
| 1980 | self._chunks = y.chunks |
| 1981 | |
| 1982 | def __getitem__(self, index): |
| 1983 | # Field access, e.g. x['a'] or x[['a', 'b']] |
| 1984 | if isinstance(index, str) or ( |
| 1985 | isinstance(index, list) and index and all(isinstance(i, str) for i in index) |
| 1986 | ): |
| 1987 | if isinstance(index, str): |
| 1988 | dt = self.dtype[index] |
| 1989 | else: |
| 1990 | dt = np.dtype( |
| 1991 | { |
| 1992 | "names": index, |
| 1993 | "formats": [self.dtype.fields[name][0] for name in index], |
| 1994 | "offsets": [self.dtype.fields[name][1] for name in index], |
| 1995 | "itemsize": self.dtype.itemsize, |
| 1996 | } |
| 1997 | ) |
| 1998 | |
| 1999 | if dt.shape: |
| 2000 | new_axis = list(range(self.ndim, self.ndim + len(dt.shape))) |
| 2001 | chunks = self.chunks + tuple((i,) for i in dt.shape) |
| 2002 | return self.map_blocks( |
| 2003 | getitem, index, dtype=dt.base, chunks=chunks, new_axis=new_axis |
| 2004 | ) |
| 2005 | else: |
| 2006 | return self.map_blocks(getitem, index, dtype=dt) |
| 2007 | |
| 2008 | if not isinstance(index, tuple): |
| 2009 | index = (index,) |
| 2010 | |
| 2011 | from dask.array.slicing import ( |
| 2012 | normalize_index, |
| 2013 | slice_with_bool_dask_array, |
| 2014 | slice_with_int_dask_array, |
| 2015 | ) |
| 2016 | |
| 2017 | index2 = normalize_index(index, self.shape) |
| 2018 | dependencies = {self.name} |
| 2019 | for i in index2: |
| 2020 | if isinstance(i, Array): |
| 2021 | dependencies.add(i.name) |
| 2022 | |
| 2023 | if any(isinstance(i, Array) and i.dtype.kind in "iu" for i in index2): |
| 2024 | self, index2 = slice_with_int_dask_array(self, index2) |
| 2025 | if any(isinstance(i, Array) and i.dtype == bool for i in index2): |
| 2026 | self, index2 = slice_with_bool_dask_array(self, index2) |
| 2027 | |
| 2028 | if all(isinstance(i, slice) and i == slice(None) for i in index2): |
| 2029 | return self |
| 2030 | |
| 2031 | out = "getitem-" + tokenize(self, index2) |
| 2032 | try: |
| 2033 | dsk, chunks = slice_array(out, self.name, self.chunks, index2) |
| 2034 | except SlicingNoop: |
| 2035 | return self |
| 2036 | |
| 2037 | graph = HighLevelGraph.from_collections(out, dsk, dependencies=[self]) |
| 2038 | |
| 2039 | meta = meta_from_array(self._meta, ndim=len(chunks)) |
nothing calls this directly
no test coverage detected