[df] Ruff format

Author: vepadulano

roottest/python/distrdf/backends/check_explicit_api.py

@@ -49,8 +49,7 @@ def test_rungraphs_3histos(self, payload):
             RDataFrame = ROOT.RDF.Distributed.Spark.RDataFrame
 
         histoproxies = [
-            RDataFrame(treename, filename, npartitions=2,
-                       executor=connection).Histo1D((col, col, 1, 40, 45), col)
+            RDataFrame(treename, filename, npartitions=2, executor=connection).Histo1D((col, col, 1, 40, 45), col)
             for col in ["b1", "b2", "b3"]
         ]
 
@@ -89,6 +88,7 @@ def test_redefine_one_column(self, payload):
         assert sum_before.GetValue() == 10.0
         assert sum_after.GetValue() == 20.0
 
+
 class TestDeprecation:
     """Test the deprecation message regarding the 'Experimental' module"""
 
@@ -125,5 +125,6 @@ def test_warning_message(self, payload):
 
             assert df.Count().GetValue() == 10
 
+
 if __name__ == "__main__":
     pytest.main(args=[__file__])