Don't mutate class attribute

- Comment out unused import

Author: dandavison

Diff for: hello/hello_activity.py

@@ -1,5 +1,4 @@
 import asyncio
-import logging
 from dataclasses import dataclass
 from datetime import timedelta
 
@@ -38,7 +37,8 @@ async def run(self, name: str) -> str:
 
 
 async def main():
-    # Uncomment the line below to see logging
+    # Uncomment the lines below to see logging output
+    # import logging
     # logging.basicConfig(level=logging.INFO)
 
     # Start client

Diff for: hello/hello_patch.py

@@ -1,5 +1,4 @@
 import asyncio
-import logging
 import sys
 from dataclasses import dataclass
 from datetime import timedelta
@@ -96,7 +95,8 @@ async def main():
 
     version = sys.argv[1]
 
-    # Uncomment the line below to see logging
+    # Uncomment the lines below to see logging output
+    # import logging
     # logging.basicConfig(level=logging.INFO)
 
     # Start client

Diff for: hello/hello_update.py

@@ -7,7 +7,8 @@
 
 @workflow.defn
 class GreetingWorkflow:
-    is_complete = False
+    def __init__(self):
+        self.is_complete = False
 
     @workflow.run
     async def run(self) -> str: