Update app.py

app.py

@@ -14,7 +14,7 @@ uploaded_file2 = st.file_uploader("Upload Second Excel File", type=["xlsx"])
 
 if uploaded_file1 and uploaded_file2:
     try:
-        # Read files, header starts at second row
+        # Read files, header starts at second row (index 1)
         df1 = pd.read_excel(uploaded_file1, header=1)
         df2 = pd.read_excel(uploaded_file2, header=1)
 
@@ -22,10 +22,10 @@ if uploaded_file1 and uploaded_file2:
         df1.columns = df1.columns.astype(str)
         df2.columns = df2.columns.astype(str)
 
-        # Get ID and Name columns
+        # Extract ID, Name, and Repeat columns
         id_col = df1.columns[0]
         name_col = df1.columns[1]
-        repeat_columns = df1.columns[2:]  # Repeat columns start from index 2
+        repeat_columns = df1.columns[2:]  # actual repeat names
 
         differences = []
 
@@ -51,7 +51,7 @@ if uploaded_file1 and uploaded_file2:
                     differences.append({
                         id_col: entry_id,
                         name_col: protein_name,
-                        "Repeat": repeat_col,
+                        "Repeat": repeat_col,  # ✅ actual repeat name from header
                         "Frequency File 1": freq1,
                         "Frequency File 2": freq2,
                         "Difference": diff
@@ -77,4 +77,4 @@ if uploaded_file1 and uploaded_file2:
             st.info("No changes in repeat frequencies were found.")
 
     except Exception as e:
-        st.error(f"⚠️ Error: {e}")
+        st.error(f"⚠ Error: {e}")