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from functools import reduce
from typing import NamedTuple, Tuple
from . import anndata
class ElementRef(NamedTuple):
parent: "anndata.AnnData"
attrname: str
keys: Tuple[str, ...] = ()
def __str__(self) -> str:
return f".{self.attrname}" + "".join(map(lambda x: f"['{x}']", self.keys))
@property
def _parent_el(self):
return reduce(
lambda d, k: d[k], self.keys[:-1], getattr(self.parent, self.attrname)
)
def get(self):
"""Get referenced value in self.parent."""
return reduce(lambda d, k: d[k], self.keys, getattr(self.parent, self.attrname))
def set(self, val):
"""Set referenced value in self.parent."""
self._parent_el[self.keys[-1]] = val
def delete(self):
del self._parent_el[self.keys[-1]]
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