use direct import to fix circular ImportError

Author: mdtanker

verde/utils.py

@@ -27,14 +27,15 @@
 except ImportError:
     numba = None
 
+import verde.KNeighbors
+
 from .base.utils import (
     check_coordinates,
     check_data,
     check_data_names,
     check_extra_coords_names,
     n_1d_arrays,
 )
-from .neighbors import KNeighbors
 
 
 def dispatch(function, delayed=False, client=None):
@@ -886,7 +887,7 @@ def fill_missing(
     grid = grid.copy()
 
     if interpolator is None:
-        interpolator = KNeighbors(k=5)
+        interpolator = verde.KNeighbors(k=5)
 
     # if input was a datarray turn into dataset
     if isinstance(grid, xr.DataArray):