first save

app.py

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+import streamlit as st
+from form_helper import FormHelper
+
+def main():
+    form_helper = FormHelper()
+    form_helper.run()
+
+
+if __name__ == "__main__":
+    main()    

form_helper.py

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+import streamlit as st
+
+class FormHelper:
+    def __init__(self):
+        """Initializes the FormHelper with default session state values."""
+        if "exam_loaded" not in st.session_state:
+            st.session_state.exam_loaded = False
+        if "exam_started" not in st.session_state:
+            st.session_state.exam_started = False
+        if "current_form" not in st.session_state:
+            st.session_state.current_form = "about"
+
+    def show_about_page(self):
+        """Displays the About page."""
+        st.title("About This App")
+        st.write("This is a dummy app for demonstrating form management in Streamlit.")
+
+    def show_load_exam_page(self):
+        """Displays the Load Exam page and handles exam loading."""
+        st.title("Load Exam")
+        st.write("Simulating exam loading...")
+        if st.button("Exam Loaded"):
+            st.session_state.exam_loaded = True
+            st.session_state.current_form = "take_exam"
+            st.rerun()
+
+    def show_take_exam_page(self):
+        """Displays the Take Exam page with dummy questions and handles exam finishing."""
+        st.title("Take Exam")
+        st.session_state.exam_started = True
+        st.write("Displaying exam questions here...")
+        for i in range(5):
+            st.write(f"Question {i+1}: What is the capital of France?")
+            st.radio(f"Select answer for question {i+1}", ("Berlin", "Paris", "Madrid", "Rome"))
+        if st.button("Finish Exam"):
+            st.session_state.exam_started = False
+            st.session_state.current_form = "view_result"
+            st.rerun()
+        if st.button("End Exam Early"):
+            st.session_state.exam_started = False
+            st.session_state.current_form = "view_result"
+            st.rerun()
+
+    def show_view_result_page(self):
+        """Displays the View Result page with dummy results and handles exam retake/reload."""
+        st.title("View Result")
+        st.write("Displaying exam results here...")
+        st.write("You answered 3 out of 5 questions correctly.")
+        if st.button("Retake Exam"):
+            st.session_state.current_form = "take_exam"
+            st.rerun()
+        if st.button("Load Another Exam"):
+            st.session_state.exam_loaded = False
+            st.session_state.current_form = "load_exam"
+            st.rerun()
+
+    def show_sidebar(self):
+        """Displays the sidebar with navigation buttons."""
+        with st.sidebar:
+            st.title("Navigation")
+            if st.button("About"):
+                st.session_state.current_form = "about"
+                st.rerun()
+            if not st.session_state.exam_started:
+                if st.button("Load Exam"):
+                    st.session_state.current_form = "load_exam"
+                    st.rerun()
+            if st.session_state.exam_loaded and st.session_state.exam_started:
+                if st.button("Take Exam"):
+                    st.session_state.current_form = "take_exam"
+                    st.rerun()
+            if "current_form" in st.session_state and st.session_state.current_form == "view_result":
+                if st.button("View Result"):
+                    st.session_state.current_form = "view_result"
+                    st.rerun()
+
+    def run(self):
+        """Runs the app by displaying the appropriate page based on the current form."""
+        self.show_sidebar()
+        if st.session_state.current_form == "about":
+            self.show_about_page()
+        elif st.session_state.current_form == "load_exam":
+            self.show_load_exam_page()
+        elif st.session_state.current_form == "take_exam":
+            self.show_take_exam_page()
+        elif st.session_state.current_form == "view_result":
+            self.show_view_result_page()

requirements.txt

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+streamlit