diff --git a/fhir_query/cli.py b/fhir_query/cli.py
index df17960..f37dd2d 100644
--- a/fhir_query/cli.py
+++ b/fhir_query/cli.py
@@ -178,7 +178,10 @@ def summarize(db_path: str) -> None:
     help="Open the graph in a browser using the dtale package for interactive data exploration.",
 )
 @click.argument(
-    "data_type", required=True, type=click.Choice(["Specimen", "DocumentReference", "ResearchSubject", "Patient"]), default="Specimen"
+    "data_type",
+    required=True,
+    type=click.Choice(["Specimen", "DocumentReference", "ResearchSubject", "Patient"]),
+    default="Specimen",
 )
 def dataframe(db_path: str, output_path: str, launch_dtale: bool, data_type: str) -> None:
     """Create dataframes from the local db."""
@@ -190,7 +193,7 @@ def dataframe(db_path: str, output_path: str, launch_dtale: bool, data_type: str
 
         patient_df = None
         specimen_df = None
-        file_name  = None
+        file_name = None
         if data_type == "Specimen":
             specimen_df = pd.DataFrame(db.flattened_specimens())
         if data_type == "Patient":
diff --git a/fhir_query/dataframer.py b/fhir_query/dataframer.py
index 8df676f..6ba1716 100644
--- a/fhir_query/dataframer.py
+++ b/fhir_query/dataframer.py
@@ -560,7 +560,6 @@ def flattened_specimen(
 
         return flat_specimen
 
-
     @lru_cache(maxsize=None)
     def flattened_patients(self) -> Generator[dict, None, None]:
         """
@@ -578,7 +577,6 @@ def flattened_patients(self) -> Generator[dict, None, None]:
             patient = json.loads(resource)
             yield self.flattened_patient(patient, observations_by_focus)
 
-
     @staticmethod
     def flattened_patient(patient: dict, observations_by_subject: dict) -> dict:
         """Return the flattened Patient record with related Observations"""
@@ -592,6 +590,3 @@ def flattened_patient(patient: dict, observations_by_subject: dict) -> dict:
                 flat_patient.update(flat_observation)
 
         return flat_patient
-
-
-