Create app.py

app.py

@@ -0,0 +1,21 @@
+import streamlit as st
+from state import provide_state
+import json
+
+INITIAL_CONF = {
+    "checkbox": False,
+    "number": 0.0
+}
+
+@provide_state
+def main(state):
+    query_params = st.experimental_get_query_params()
+    if "conf" in query_params:
+        state.conf = json.loads(query_params["conf"][0])
+    state.conf = state.conf or INITIAL_CONF
+
+    state.conf["checkbox"] = st.checkbox("Retain State !", value=state.conf["checkbox"])
+    state.conf["number"] = st.number_input("You Too Retain State !", value=state.conf["number"])
+    st.experimental_set_query_params(**{"conf": json.dumps(state.conf)})
+
+main()