Update app.py

app.py

@@ -193,7 +193,8 @@ with col_1:
 
 with col_2:
     st.markdown("<br style='margin:15px 0'>", unsafe_allow_html=True)
-    example = st.button("Example", on_click=set_example)
+    if st.button("Example"):
+        st.session_state['example'] = True
     
     # with col_2:
     #     st.markdown("### Examples")
@@ -226,7 +227,6 @@ if st.session_state["example"]:
     fname = "NGC4649_example"
     os.system(f'mkdir -p {fname}')
     data, wcs = load_file(f"{fname}.fits")
-    st.session_state['example'] = True
 
 if "data" not in locals():
     data, wcs = np.ones((128,128)) * (-1), None