Update app.py

app.py

@@ -13,4 +13,7 @@ generator = pipeline("text-generation", model=model_name)
 
 st.title("_Europe GraphGen_  :blue[Graph generator] :flag-eu:")
 user_input = st.text_input("What graphics do you have in mind")
-generate_button = st.button("Generate")
+generate_button = st.button("Generate")
+
+if generate_button and user_input:
+    ...