Update dataset.py

OstapHEP · Jul 24, 2024 · 45a2c21 · 45a2c21
1 parent c264ec3
commit 45a2c21
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/ostap/fitting/dataset.py b/ostap/fitting/dataset.py
@@ -37,7 +37,8 @@
                                           list_types    , sequence_types )
 from   ostap.math.base           import islong
 from   ostap.fitting.variables   import valid_formula, make_formula 
-from   ostap.trees.cuts          import expression_types, vars_and_cuts  
+from   ostap.trees.cuts          import expression_types, vars_and_cuts 
+import ostap.trees.trees
 import ostap.fitting.roocollections
 import ostap.fitting.printable
 import ROOT, random, math, sys, ctypes