diff --git a/perfmetrics/scripts/testing_on_gke/examples/utils/gsheet.py b/perfmetrics/scripts/testing_on_gke/examples/utils/gsheet.py
index d527a44903..0dabbdbb51 100644
--- a/perfmetrics/scripts/testing_on_gke/examples/utils/gsheet.py
+++ b/perfmetrics/scripts/testing_on_gke/examples/utils/gsheet.py
@@ -68,15 +68,14 @@ def append_data_to_gsheet(
 ) -> None:
   """Calls the API to append the given data at the end of the given worksheet in the given gsheet.
 
-  If the passed header matches the first row of the file, then the
-  header is not inserted again.
   Args:
     serviceAccountKeyFile: Path of a service-account key-file for authentication
       read/write from/to the given gsheet. This can be a local filepath or a GCS
       path starting with `gs:`
     worksheet: string, name of the worksheet to be edited appended by a "!"
     data: Dictionary of {'header': tuple, 'values': list(tuples)}, to be added
-      to the worksheet.
+      to the worksheet. If the passed header matches the first row of the
+      worksheet, then the header row is not inserted again.
     gsheet_id: Unique ID to identify a gsheet.
 
   Raises:
@@ -92,41 +91,41 @@ def _using_local_service_key_file(localServiceAccountKeyFile: str):
     # Open a read-write gsheet client.
     client = _get_sheets_service_client(localServiceAccountKeyFile)
 
-    def _read_from_range(cell_range: str):
-      """Returns a list of list of values for the given range in the worksheet."""
-      gsheet_response = (
-          client.spreadsheets()
-          .values()
-          .get(spreadsheetId=gsheet_id, range=f'{worksheet}!{cell_range}')
-          .execute()
-      )
-      return gsheet_response['values'] if 'values' in gsheet_response else []
-
-    def _write_at_address(cell_address: str, data):
-      """Writes a list of tuple of values at the given cell_cell_address in the worksheet."""
-      client.spreadsheets().values().update(
-          spreadsheetId=gsheet_id,
-          valueInputOption='USER_ENTERED',
-          body={'majorDimension': 'ROWS', 'values': data},
-          range=f'{worksheet}!{cell_address}',
-      ).execute()
-
-    data_in_first_column = _read_from_range('A1:A')
-    num_rows = len(data_in_first_column)
-    data_in_first_row = _read_from_range('A1:1')
-    original_header = tuple(data_in_first_row[0]) if data_in_first_row else ()
-    new_header = data['header']
-
-    # Insert header in the file, if needed.
-    if not original_header or not original_header == new_header:
-      # Append header after last row.
-      _write_at_address(f'A{num_rows+1}', [new_header])
-      num_rows = num_rows + 1
-
-    # Append given values after the last row.
-    _write_at_address(f'A{num_rows+1}', data['values'])
+  def _read_from_range(cell_range: str):
+    """Returns a list of list of values for the given range in the worksheet."""
+    gsheet_response = (
+        client.spreadsheets()
+        .values()
+        .get(spreadsheetId=gsheet_id, range=f'{worksheet}!{cell_range}')
+        .execute()
+    )
+    return gsheet_response['values'] if 'values' in gsheet_response else []
+
+  def _write_at_address(cell_address: str, data):
+    """Writes a list of tuple of values at the given cell_cell_address in the worksheet."""
+    client.spreadsheets().values().update(
+        spreadsheetId=gsheet_id,
+        valueInputOption='USER_ENTERED',
+        body={'majorDimension': 'ROWS', 'values': data},
+        range=f'{worksheet}!{cell_address}',
+    ).execute()
+
+  data_in_first_column = _read_from_range('A1:A')
+  num_rows = len(data_in_first_column)
+  data_in_first_row = _read_from_range('A1:1')
+  original_header = tuple(data_in_first_row[0]) if data_in_first_row else ()
+  new_header = data['header']
+
+  # Insert header in the file, if needed.
+  if not original_header or not original_header == new_header:
+    # Append header after last row.
+    _write_at_address(f'A{num_rows+1}', [new_header])
     num_rows = num_rows + 1
 
+  # Append given values after the last row.
+  _write_at_address(f'A{num_rows+1}', data['values'])
+  num_rows = num_rows + 1
+
   if serviceAccountKeyFile.startswith('gs://'):
     localServiceAccountKeyFile = download_gcs_object_locally(
         serviceAccountKeyFile
@@ -138,4 +137,5 @@ def _write_at_address(cell_address: str, data):
 
 
 def url(gsheet_id: str) -> str:
+  """Returns the url corresponding to the given google sheet ID."""
   return f'https://docs.google.com/spreadsheets/d/{gsheet_id}'
diff --git a/perfmetrics/scripts/testing_on_gke/examples/utils/gsheet_test.py b/perfmetrics/scripts/testing_on_gke/examples/utils/gsheet_test.py
index 0f82f18168..f3a65b9702 100644
--- a/perfmetrics/scripts/testing_on_gke/examples/utils/gsheet_test.py
+++ b/perfmetrics/scripts/testing_on_gke/examples/utils/gsheet_test.py
@@ -27,10 +27,6 @@
 
 class GsheetTest(unittest.TestCase):
 
-  # @classmethod
-  # def setUpClass(self):
-  # self.project_id = 'gcs-fuse-test'
-
   def test_append_data_to_gsheet(self):
     _DEFAULT_GSHEET_ID = '1s9DCis6XZ_oHRIFTy0F8yVN93EGA2Koks_pzpCqAIS4'
 
diff --git a/perfmetrics/scripts/testing_on_gke/examples/utils/utils.py b/perfmetrics/scripts/testing_on_gke/examples/utils/utils.py
index 140096b689..01215040ee 100644
--- a/perfmetrics/scripts/testing_on_gke/examples/utils/utils.py
+++ b/perfmetrics/scripts/testing_on_gke/examples/utils/utils.py
@@ -370,7 +370,7 @@ def run_command(command: str) -> int:
   Returns exit-code which would be non-zero for error.
   """
   result = subprocess.run(
-      [word for word in command.split(" ") if (word and not str.isspace(word))],
+      [word for word in command.split(" ") if (word and word.strip())],
       capture_output=True,
       text=True,
   )