Add streamlit demo program

hello.py

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+import streamlit as st 
+# Create a text input box 
+text_input = st.text_input("Enter some text:") 
+# Create a submit button 
+if st.button("Submit"): 
+st.write("You've inputted:", text_input)

streamlit_test1.py

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+import streamlit as st 
+
+# Initialize session state for storing past inputs 
+if 'text_history' not in st.session_state: 
+    st.session_state.text_history = [] 
+
+# Create a text input box 
+text_input = st.text_input("Enter some text:") 
+
+# Create a submit button 
+submit_button = st.button("Submit") 
+if submit_button: 
+    st.session_state.text_history.append(text_input) 
+    st.write("You've inputted:", text_input) 
+    st.session_state.input_box = ""  # Clear the input box 
+
+# Create a clear button 
+clear_button = st.button("Clear History") 
+if clear_button: 
+    st.session_state.text_history = [] 
+
+# Display the list of past submitted input 
+st.write("## Past inputs") 
+for text in st.session_state.text_history: 
+    st.write(text)