Update app.py

app.py

@@ -14,8 +14,8 @@ def upload_csv(file):
         if file is None:
             return ["All"], ["All"], "No file uploaded. Please upload a CSV file.", "All", "All"
         
-        # Read the CSV file
-        df = pd.read_csv(file.name)
+        # Read the CSV file directly from the file object
+        df = pd.read_csv(file)
         
         # Check if the DataFrame is empty
         if df.empty:
@@ -29,11 +29,16 @@ def upload_csv(file):
             missing_cols = required_columns - set(df.columns)
             return ["All"], ["All"], f"CSV is missing required columns: {', '.join(missing_cols)}", "All", "All"
         
-        # Extract unique values for dropdowns
-        labs = ['All'] + sorted(df['Lab'].dropna().unique().tolist())
-        types = ['All'] + sorted(df['Type'].dropna().unique().tolist())
+        # Extract unique values for dropdowns, ensuring no empty or invalid entries
+        labs = ['All'] + sorted([str(lab) for lab in df['Lab'].dropna().unique() if str(lab).strip()])
+        types = ['All'] + sorted([str(type_) for type_ in df['Type'].dropna().unique() if str(type_).strip()])
+        
+        # If no valid labs or types are found, return default values
+        if len(labs) == 1:  # Only "All" is present
+            labs = ["All"]
+        if len(types) == 1:  # Only "All" is present
+            types = ["All"]
         
-        # Return the updated choices and reset the dropdown values to "All"
         return labs, types, "", "All", "All"
     except Exception as e:
         # Handle any other errors (e.g., file not readable, invalid CSV format)