Create app.py

app.py

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+import os
+import streamlit as st
+from streamlit_cookies_manager import EncryptedCookieManager
+
+# This should be on top of your script
+cookies = EncryptedCookieManager(
+    # This prefix will get added to all your cookie names.
+    # This way you can run your app on Streamlit Cloud without cookie name clashes with other apps.
+    prefix="ktosiek/streamlit-cookies-manager/",
+    # You should really setup a long COOKIES_PASSWORD secret if you're running on Streamlit Cloud.
+    password=os.environ.get("COOKIES_PASSWORD", "My secret password"),
+)
+if not cookies.ready():
+    # Wait for the component to load and send us current cookies.
+    st.stop()
+
+st.write("Current cookies:", cookies)
+value = st.text_input("New value for a cookie")
+if st.button("Change the cookie"):
+    cookies['a-cookie'] = value  # This will get saved on next rerun
+    if st.button("No really, change it now"):
+        cookies.save()  # Force saving the cookies now, without a rerun