Updates

app.py

@@ -21,12 +21,8 @@ if 'module_question_count' not in st.session_state:
     st.session_state.module_question_count = {}
 if 'pdf_data' not in st.session_state:
     st.session_state.pdf_data = None
-if 'submit_disabled' not in st.session_state:
-    st.session_state.submit_disabled = True
 if 'next_disabled' not in st.session_state:
     st.session_state.next_disabled = True
-if 'selected_answer' not in st.session_state:
-    st.session_state.selected_answer = None
 
 def reset_pdf_cache():
     st.session_state.pdf_data = None
@@ -113,7 +109,6 @@ def navigate_question(direction):
         new_question = generate_new_question(st.session_state.current_module, modules[st.session_state.current_module])
         st.session_state.questions.append(new_question)
         st.session_state.current_index = len(st.session_state.questions) - 1
-        st.session_state.submit_disabled = True
         st.session_state.next_disabled = True
         st.session_state.selected_answer = None
 
@@ -136,7 +131,6 @@ if selected_module != st.session_state.current_module:
     st.session_state.questions = [generate_new_question(selected_module, modules[selected_module])]
     st.session_state.module_question_count[selected_module] = 0
     st.session_state.module_correct_count[selected_module] = 0
-    st.session_state.submit_disabled = True
     st.session_state.next_disabled = True
     st.session_state.selected_answer = None
 
@@ -176,12 +170,9 @@ with st.form(key=f'question_form_{st.session_state.current_index}'):
         key=f"question_{st.session_state.current_index}_options"
     )
     # Enable submit button when an answer is selected
-    submit_button = st.form_submit_button(label="Submit")
+    submit_button = st.form_submit_button(label="Submit", disabled=selected_answer is None)
 
 # Handle button state and answer submission
-if selected_answer:
-    st.session_state.submit_disabled = False
-
 if submit_button and selected_answer:
     # Process the answer
     current_question['selected'] = selected_answer
@@ -192,7 +183,6 @@ if submit_button and selected_answer:
         st.session_state.correct_count += 1
         st.session_state.module_correct_count[selected_module] += 1
 
-    st.session_state.submit_disabled = True
     st.session_state.next_disabled = False
 
 # Show correct/incorrect feedback after submission