bots/followup: Use Python 3 type mypy annotations.

tools/run-mypy

@@ -36,6 +36,8 @@ exclude = [
 force_include = [
     # Include bots that we migrate to mypy.
     "zulip_bots/zulip_bots/bots/helloworld/helloworld.py",
+    "zulip_bots/zulip_bots/bots/followup/followup.py",
+    "zulip_bots/zulip_bots/bots/followup/test_followup.py",
 ]
 
 parser = argparse.ArgumentParser(description="Run mypy on files tracked by git.")

zulip_bots/zulip_bots/bots/followup/followup.py

@@ -1,4 +1,5 @@
 # See readme.md for instructions on running this code.
+from typing import Dict, Any
 
 class FollowupHandler(object):
     '''
@@ -12,7 +13,7 @@ class FollowupHandler(object):
     external issue tracker as well.
     '''
 
-    def usage(self):
+    def usage(self: Any) -> str:
         return '''
             This plugin will allow users to flag messages
             as being follow-up items.  Users should preface
@@ -22,7 +23,7 @@ class FollowupHandler(object):
             called "followup" that your API user can send to.
             '''
 
-    def handle_message(self, message, bot_handler):
+    def handle_message(self: Any, message: Dict[str, str], bot_handler: Any) -> None:
         if message['content'] == '':
             bot_response = "Please specify the message you want to send to followup stream after @mention-bot"
             bot_handler.send_reply(message, bot_response)
@@ -35,7 +36,7 @@ class FollowupHandler(object):
                 content=bot_response,
             ))
 
-    def get_bot_followup_response(self, message):
+    def get_bot_followup_response(self: Any, message: Dict[str, str]) -> str:
         original_content = message['content']
         original_sender = message['sender_email']
         temp_content = 'from %s: ' % (original_sender,)

zulip_bots/zulip_bots/bots/followup/test_followup.py

@@ -5,10 +5,12 @@ from __future__ import print_function
 
 from zulip_bots.test_lib import BotTestCase
 
+from typing import Any
+
 class TestFollowUpBot(BotTestCase):
     bot_name = "followup"
 
-    def test_bot(self):
+    def test_bot(self: Any) -> None:
         expected_send_reply = [
             ("", 'Please specify the message you want to send to followup stream after @mention-bot')
         ]