More troubleshooting and setup tips, and some improvements to flagship Week 8 project

week8/keep_warm.py

@@ -0,0 +1,10 @@
+import time
+import modal
+from datetime import datetime
+
+Pricer = modal.Cls.lookup("pricer-service", "Pricer")
+pricer = Pricer()
+while True:
+    reply = pricer.wake_up.remote()
+    print(f"{datetime.now()}: {reply}")
+    time.sleep(30)