diff --git a/src/components/preprocessing/base_kpi_inference_curator.py b/src/components/preprocessing/base_kpi_inference_curator.py
index 1a2e2ae..e1c73ea 100644
--- a/src/components/preprocessing/base_kpi_inference_curator.py
+++ b/src/components/preprocessing/base_kpi_inference_curator.py
@@ -197,7 +197,7 @@ def return_sliced_squad(self, squad_json, indices):
             return {}
 
         pdf2pars = defaultdict(list)
-        for (i1, i2) in indices:
+        for i1, i2 in indices:
             pdf2pars[i1].append(i2)
 
         data = []
diff --git a/src/components/preprocessing/kpi_inference_curator.py b/src/components/preprocessing/kpi_inference_curator.py
index 4b4b72f..b9da5af 100644
--- a/src/components/preprocessing/kpi_inference_curator.py
+++ b/src/components/preprocessing/kpi_inference_curator.py
@@ -103,6 +103,7 @@ def clean(self, df):
         Args:
             df (A pandas dataframe)
         """
+
         # map kpi to question
         def map_kpi(r):
             try: