Application changes

app.py

@@ -81,7 +81,8 @@ def quiz():
                            selected_file=session['selected_file'],
                            show_previous=session['current_question'] > 0,
                            multiple_selection=multiple_selection,
-                           elapsed_time=elapsed_time_str)
+                           elapsed_time=elapsed_time_str,
+                           previous_answers=session['answers'][session['current_question']] if session['current_question'] < len(session['answers']) else [])
 
 @app.route('/results')
 def results():

templates/quiz.html

@@ -25,14 +25,14 @@
         {% if multiple_selection %}
             {% for option in question.options %}
                 <label style="display: flex; align-items: center;">
-                    <input type="checkbox" name="answer" value="{{ loop.index }}" required>
+                    <input type="checkbox" name="answer" value="{{ loop.index }}" {% if loop.index in previous_answers %}checked{% endif %}>
                     <span>{{ option }}</span>
                 </label><br>
             {% endfor %}
         {% else %}
             {% for option in question.options %}
                 <label style="display: flex; align-items: center;">
-                    <input type="radio" name="answer" value="{{ loop.index }}" required>
+                    <input type="radio" name="answer" value="{{ loop.index }}" {% if loop.index in previous_answers %}checked{% endif %}>
                     <span>{{ option }}</span>
                 </label><br>
             {% endfor %}