more explicit import

ade31670 · Martin Reinecke · d6fa9aa0 · ade31670
Commit ade31670 authored May 26, 2018 by Martin Reinecke
--- a/nifty4/extra/energy_tests.py
+++ b/nifty4/extra/energy_tests.py
@@ -18,7 +18,7 @@

 import numpy as np
 from ..field import Field
-from .. import from_random
+from ..sugar import from_random

 __all__ = ["check_value_gradient_consistency",
           "check_value_gradient_curvature_consistency"]