Update app.py

app.py

@@ -22,7 +22,7 @@ if st.button("Generate Test Cases"):
 
 # Export test cases
 st.sidebar.title("Export Test Cases")
-format = st.sidebar.selectbox("Select Format", ["json", "csv"], key="export_format")
+format = st.sidebar.selectbox("Select Format", ["json", "csv", "excel"], key="export_format")  # Added "excel" as an option
 if st.sidebar.button("Export Test Cases", key="export_button"):
     if 'test_cases' in st.session_state:
         test_cases = st.session_state.test_cases
@@ -32,6 +32,8 @@ if st.sidebar.button("Export Test Cases", key="export_button"):
             mime_type = "application/json"
         elif format == 'csv':
             mime_type = "text/csv"
+        elif format == 'excel':
+            mime_type = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
         else:
             st.sidebar.error(f"Unsupported format: {format}")
             export_content = None