Update src/streamlit_app.py

src/streamlit_app.py

@@ -75,7 +75,7 @@ image_pairs = [
 results = {}
 
 
-code_prov = st.text_input("Insert provided code:")
+code_prov = st.text_input("Type the provided code in the box below and press ENTER afterwards:")
 
 # ---- LOOP THROUGH PAIRS ----
 for i, (imgA, imgB) in enumerate(image_pairs):
@@ -102,8 +102,8 @@ if st.button("Submit"):
         if results[key] == "-":
             cont += 1
     
-    if code_prov is None:
-        st.error("Please, insert your provided code at the beginning of this form. Then submit again.")
+    if code_prov is "":
+        st.error("Please, insert your provided code at the beginning of this form. Then, try submitting again.")
     elif cont != 0:
         st.error("Sorry, you have not evaluated all pairs. Please, check again.")    
     else: