from pathlib2 import PurePath
def tuple_splitter(flat_key):
return flat_key
def path_splitter(flat_key):
keys = PurePath(flat_key).parts
return keys
def dot_splitter(flat_key):
keys = tuple(flat_key.split('.'))
return keys
def underscore_splitter(flat_key):
keys = tuple(flat_key.split("_"))
return keys
def make_splitter(delimiter):
"""Create a reducer with a custom delimiter.
Parameters
----------
delimiter : str
Delimiter to use to split keys.
Returns
-------
f : Callable
Callable that can be passed to ``unflatten``'s ``splitter`` argument.
"""
def f(flat_key):
keys = tuple(flat_key.split(delimiter))
return keys
return f
