Method _split

dask/dataframe/dask_expr/_str_accessor.py:78–97

(self, method, pat=None, n=-1, expand=False)

    _accessor_properties = ()

    def _split(self, method, pat=None, n=-1, expand=False):
        from dask.dataframe.dask_expr import new_collection

        if expand:
            if n == -1:
                raise NotImplementedError(
                    "To use the expand parameter you must specify the number of "
                    "expected splits with the n= parameter. Usually n splits "
                    "result in n+1 output columns."
                )
            return new_collection(
                SplitMap(
                    self._series,
                    self._accessor_name,
                    method,
                    (),
                    {"pat": pat, "n": n, "expand": expand},
                )
            )
        return self._function_map(method, pat=pat, n=n, expand=expand)

    def split(self, pat=None, n=-1, expand=False):
        """Known inconsistencies: ``expand=True`` with unknown ``n`` will raise a ``NotImplementedError``."""