Update app.py

app.py

@@ -1181,7 +1181,7 @@ def check_reagents(pdf_file_path):
     return reagent_errors
 
 
-
+def main():
     # Set page config
     st.set_page_config(
         page_title="Chemistry Text Analyzer",
@@ -1273,4 +1273,5 @@ def check_reagents(pdf_file_path):
     st.markdown("*Chemistry Text Analyzer - Upload your files or paste text for chemical analysis*")
 
 if __name__ == "__main__":
-    main()
+    main()
+