Update app.py

app.py

@@ -1305,13 +1305,13 @@ def process_examples(file_name):
 
 
 def clean_and_convert(cell):
-    if isinstance(cell.value, str):
-        cell.value = cell.value.replace("\t", "")
+    if isinstance(cell, str):  # Check if cell value is a string
+        cell = cell.replace("\t", "")
     try:
-        float_val = float(cell.value)
-        cell.value = float_val
+        float_val = float(cell)
+        return float_val
     except (ValueError, TypeError):
-        pass
+        return cell
 
 def clean_excel_file(file_path):
     logger.info("Cleaning file...")
@@ -1332,7 +1332,7 @@ def clean_excel_file(file_path):
         # Iterate through all cells in the current sheet and clean the data
         for row in worksheet.iter_rows():
             for cell in row:
-                clean_and_convert(cell)
+                cell.value = clean_and_convert(cell.value)
 
     # Save the cleaned file to the temporary path
     workbook.save(temp_file_path)