diff --git a/tools/custom_check.py b/tools/custom_check.py
index ff60e91..e834419 100644
--- a/tools/custom_check.py
+++ b/tools/custom_check.py
@@ -1,4 +1,4 @@
-from typing import Any, Dict, List, Tuple
+from typing import List
 from zulint.custom_rules import RuleList
 
 MYPY = False
diff --git a/tools/deploy b/tools/deploy
index e74d988..4ba8e52 100755
--- a/tools/deploy
+++ b/tools/deploy
@@ -9,7 +9,6 @@ import zipfile
 import textwrap
 import requests
 import urllib.parse
-import json
 from requests import Response
 
 red = '\033[91m'  # type: str
diff --git a/tools/pep8.py b/tools/pep8.py
index 4373590..47d740c 100644
--- a/tools/pep8.py
+++ b/tools/pep8.py
@@ -2,7 +2,6 @@
 # Original path: zulip/tools/linter_lib/pep8.py
 
 import subprocess
-import sys
 
 from zulint.printer import print_err, colors
 
diff --git a/tools/server_lib/test_handler.py b/tools/server_lib/test_handler.py
index fb797ec..a1d47e5 100644
--- a/tools/server_lib/test_handler.py
+++ b/tools/server_lib/test_handler.py
@@ -1,4 +1,3 @@
-from importlib import import_module
 
 import os
 import sys
diff --git a/tools/test-bots b/tools/test-bots
index 8295c06..5f62489 100755
--- a/tools/test-bots
+++ b/tools/test-bots
@@ -1,14 +1,12 @@
 #!/usr/bin/env python3
 
 from os.path import dirname, basename
-from importlib import import_module
 
 import os
 import sys
 import argparse
 import glob
 import unittest
-from unittest import TestCase, TestSuite
 import pytest
 
 def parse_args():
diff --git a/zulip/integrations/bridge_with_irc/irc-mirror.py b/zulip/integrations/bridge_with_irc/irc-mirror.py
index 266cd51..0d767ff 100755
--- a/zulip/integrations/bridge_with_irc/irc-mirror.py
+++ b/zulip/integrations/bridge_with_irc/irc-mirror.py
@@ -8,7 +8,6 @@ import argparse
 import zulip
 import sys
 import traceback
-from typing import Any, Dict
 
 usage = """./irc-mirror.py --irc-server=IRC_SERVER --channel=<CHANNEL> --nick-prefix=<NICK> --stream=<STREAM> [optional args]
 
diff --git a/zulip/integrations/bridge_with_irc/irc_mirror_backend.py b/zulip/integrations/bridge_with_irc/irc_mirror_backend.py
index 5dfb3e5..3c5cdaa 100644
--- a/zulip/integrations/bridge_with_irc/irc_mirror_backend.py
+++ b/zulip/integrations/bridge_with_irc/irc_mirror_backend.py
@@ -1,6 +1,6 @@
 import irc.bot
 import irc.strings
-from irc.client import ip_numstr_to_quad, ip_quad_to_numstr, Event, ServerConnection
+from irc.client import Event, ServerConnection, ip_numstr_to_quad
 from irc.client_aio import AioReactor
 import multiprocessing as mp
 from typing import Any, Dict
diff --git a/zulip/integrations/google/get-google-credentials b/zulip/integrations/google/get-google-credentials
index e17becb..2cc5abe 100644
--- a/zulip/integrations/google/get-google-credentials
+++ b/zulip/integrations/google/get-google-credentials
@@ -1,6 +1,4 @@
 #!/usr/bin/env python3
-import datetime
-import httplib2
 import os
 
 from oauth2client import client
diff --git a/zulip/integrations/google/google-calendar b/zulip/integrations/google/google-calendar
index 72f2508..231c255 100755
--- a/zulip/integrations/google/google-calendar
+++ b/zulip/integrations/google/google-calendar
@@ -10,13 +10,11 @@ import logging
 import argparse
 import os
 import pytz
-import urllib
 import sys
 import time
-import traceback
-from typing import List, Set, Tuple, Iterable, Optional
+from typing import List, Optional, Set, Tuple
 
-from oauth2client import client, tools
+from oauth2client import client
 from oauth2client.file import Storage
 try:
     from googleapiclient import discovery
diff --git a/zulip/integrations/hg/zulip_changegroup.py b/zulip/integrations/hg/zulip_changegroup.py
index 4f6f357..b78d219 100755
--- a/zulip/integrations/hg/zulip_changegroup.py
+++ b/zulip/integrations/hg/zulip_changegroup.py
@@ -7,7 +7,7 @@
 
 import zulip
 import sys
-from typing import Any, Optional, Text
+from typing import Text
 from mercurial import ui, repository as repo
 
 VERSION = "0.9"
diff --git a/zulip/integrations/jabber/jabber_mirror.py b/zulip/integrations/jabber/jabber_mirror.py
index 1fdb7f3..c14da4b 100755
--- a/zulip/integrations/jabber/jabber_mirror.py
+++ b/zulip/integrations/jabber/jabber_mirror.py
@@ -6,7 +6,6 @@ import os
 import traceback
 import signal
 from types import FrameType
-from typing import Any
 from zulip import RandomExponentialBackoff
 
 def die(signal: int, frame: FrameType) -> None:
diff --git a/zulip/integrations/jabber/jabber_mirror_backend.py b/zulip/integrations/jabber/jabber_mirror_backend.py
index 8981ee3..88bc988 100755
--- a/zulip/integrations/jabber/jabber_mirror_backend.py
+++ b/zulip/integrations/jabber/jabber_mirror_backend.py
@@ -40,19 +40,14 @@
 from typing import Dict, List, Set, Optional
 
 import logging
-import threading
 import optparse
 
 from sleekxmpp import ClientXMPP, InvalidJID, JID
 from sleekxmpp.stanza import Message as JabberMessage
-from sleekxmpp.exceptions import IqError, IqTimeout
 from configparser import SafeConfigParser
-import getpass
-import os
 import sys
 import zulip
 from zulip import Client
-import re
 from typing import Any, Callable
 
 __version__ = "1.1"
diff --git a/zulip/integrations/log2zulip/log2zulip b/zulip/integrations/log2zulip/log2zulip
index 166a933..0c2e8c2 100755
--- a/zulip/integrations/log2zulip/log2zulip
+++ b/zulip/integrations/log2zulip/log2zulip
@@ -6,7 +6,6 @@ import os
 import platform
 import re
 import sys
-import shutil
 import subprocess
 import tempfile
 import traceback
diff --git a/zulip/integrations/nagios/nagios-notify-zulip b/zulip/integrations/nagios/nagios-notify-zulip
index 09b786e..7c86bd3 100755
--- a/zulip/integrations/nagios/nagios-notify-zulip
+++ b/zulip/integrations/nagios/nagios-notify-zulip
@@ -2,7 +2,7 @@
 import argparse
 import zulip
 
-from typing import List, Text, Dict, Any
+from typing import Any, Dict, Text
 
 VERSION = "0.9"
 # Nagios passes the notification details as command line options.
diff --git a/zulip/integrations/perforce/zulip_change-commit.py b/zulip/integrations/perforce/zulip_change-commit.py
index eecafc5..f029f68 100755
--- a/zulip/integrations/perforce/zulip_change-commit.py
+++ b/zulip/integrations/perforce/zulip_change-commit.py
@@ -23,7 +23,7 @@ import git_p4
 __version__ = "0.1"
 
 sys.path.insert(0, os.path.dirname(__file__))
-from typing import Any, Dict, Optional, Text
+from typing import Any, Dict, Optional
 import zulip_perforce_config as config
 
 if config.ZULIP_API_PATH is not None:
diff --git a/zulip/integrations/svn/post-commit b/zulip/integrations/svn/post-commit
index a97b12d..e88f760 100755
--- a/zulip/integrations/svn/post-commit
+++ b/zulip/integrations/svn/post-commit
@@ -13,7 +13,7 @@ import os
 import sys
 import os.path
 import pysvn
-from typing import Any, Dict, List, Optional, Text, Tuple, Union
+from typing import Any, Dict, Optional, Text, Tuple
 
 sys.path.insert(0, os.path.dirname(__file__))
 import zulip_svn_config as config
diff --git a/zulip/integrations/zephyr/check-mirroring b/zulip/integrations/zephyr/check-mirroring
index 315cbd8..51f3821 100755
--- a/zulip/integrations/zephyr/check-mirroring
+++ b/zulip/integrations/zephyr/check-mirroring
@@ -2,7 +2,6 @@
 import sys
 import time
 import optparse
-import os
 import random
 import logging
 import subprocess
diff --git a/zulip/integrations/zephyr/zephyr_mirror.py b/zulip/integrations/zephyr/zephyr_mirror.py
index 0fceaad..27a6141 100755
--- a/zulip/integrations/zephyr/zephyr_mirror.py
+++ b/zulip/integrations/zephyr/zephyr_mirror.py
@@ -12,7 +12,6 @@ from zephyr_mirror_backend import parse_args
 (options, args) = parse_args()
 
 from types import FrameType
-from typing import Any
 
 def die(signal: int, frame: FrameType) -> None:
 
@@ -44,7 +43,6 @@ if options.forward_class_messages and not options.noshard:
         return 0
     for (status, job) in run_parallel(run_job, jobs, threads=16):
         print("A mirroring shard died!")
-        pass
     sys.exit(0)
 
 backoff = RandomExponentialBackoff(timeout_success_equivalent=300)
diff --git a/zulip/integrations/zephyr/zephyr_mirror_backend.py b/zulip/integrations/zephyr/zephyr_mirror_backend.py
index 1e62854..617bc2e 100755
--- a/zulip/integrations/zephyr/zephyr_mirror_backend.py
+++ b/zulip/integrations/zephyr/zephyr_mirror_backend.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-from typing import IO, Any, Dict, List, Text, Union, Set, Tuple, Optional, cast
+from typing import Any, Dict, IO, List, Optional, Set, Text, Tuple, cast
 from types import FrameType
 
 import sys
@@ -10,7 +10,6 @@ import time
 import subprocess
 import optparse
 import os
-import datetime
 import textwrap
 import signal
 import logging
diff --git a/zulip/zulip/examples/subscribe b/zulip/zulip/examples/subscribe
index 5ba956c..fc3153d 100755
--- a/zulip/zulip/examples/subscribe
+++ b/zulip/zulip/examples/subscribe
@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 
-import sys
 import argparse
 
 usage = """subscribe [options] --streams=<streams>
diff --git a/zulip/zulip/examples/unsubscribe b/zulip/zulip/examples/unsubscribe
index 976dc5a..d55b90e 100755
--- a/zulip/zulip/examples/unsubscribe
+++ b/zulip/zulip/examples/unsubscribe
@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 
-import sys
 import argparse
 
 usage = """unsubscribe [options] --streams=<streams>
diff --git a/zulip/zulip/send.py b/zulip/zulip/send.py
index 48ff881..ea89460 100755
--- a/zulip/zulip/send.py
+++ b/zulip/zulip/send.py
@@ -5,7 +5,7 @@ import sys
 import argparse
 import logging
 
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict
 
 import zulip
 
diff --git a/zulip_bots/setup.py b/zulip_bots/setup.py
index 385b6f7..3f9fd6f 100755
--- a/zulip_bots/setup.py
+++ b/zulip_bots/setup.py
@@ -2,8 +2,6 @@
 
 import os
 import sys
-import glob
-import subprocess
 from typing import Any, Dict, Optional
 
 ZULIP_BOTS_VERSION = "0.6.4"
diff --git a/zulip_bots/zulip_bots/bots/beeminder/beeminder.py b/zulip_bots/zulip_bots/bots/beeminder/beeminder.py
index 98948c5..f4fad91 100644
--- a/zulip_bots/zulip_bots/bots/beeminder/beeminder.py
+++ b/zulip_bots/zulip_bots/bots/beeminder/beeminder.py
@@ -1,8 +1,7 @@
 import requests
 import logging
-import json
-from typing import Dict, Any, List
-from requests.exceptions import HTTPError, ConnectionError
+from typing import Any, Dict
+from requests.exceptions import ConnectionError
 
 help_message = '''
 You can add datapoints towards your beeminder goals \
diff --git a/zulip_bots/zulip_bots/bots/beeminder/test_beeminder.py b/zulip_bots/zulip_bots/bots/beeminder/test_beeminder.py
index 699658a..aedc53b 100644
--- a/zulip_bots/zulip_bots/bots/beeminder/test_beeminder.py
+++ b/zulip_bots/zulip_bots/bots/beeminder/test_beeminder.py
@@ -1,4 +1,4 @@
-from unittest.mock import patch, Mock
+from unittest.mock import patch
 from zulip_bots.test_lib import StubBotHandler, BotTestCase, DefaultTests, get_bot_message_handler
 from requests.exceptions import ConnectionError
 
diff --git a/zulip_bots/zulip_bots/bots/connect_four/controller.py b/zulip_bots/zulip_bots/bots/connect_four/controller.py
index 0c4ef98..3120f1b 100644
--- a/zulip_bots/zulip_bots/bots/connect_four/controller.py
+++ b/zulip_bots/zulip_bots/bots/connect_four/controller.py
@@ -1,5 +1,4 @@
 from copy import deepcopy
-from random import randint
 from functools import reduce
 from zulip_bots.game_handler import BadMoveException
 
diff --git a/zulip_bots/zulip_bots/bots/converter/converter.py b/zulip_bots/zulip_bots/bots/converter/converter.py
index 88a05b7..1f2ef3c 100644
--- a/zulip_bots/zulip_bots/bots/converter/converter.py
+++ b/zulip_bots/zulip_bots/bots/converter/converter.py
@@ -1,10 +1,8 @@
 # See readme.md for instructions on running this code.
 
 import copy
-import importlib
 from math import log10, floor
 
-import re
 from zulip_bots.bots.converter import utils
 
 from typing import Any, Dict, List
diff --git a/zulip_bots/zulip_bots/bots/define/define.py b/zulip_bots/zulip_bots/bots/define/define.py
index aa2314c..d3e9f27 100644
--- a/zulip_bots/zulip_bots/bots/define/define.py
+++ b/zulip_bots/zulip_bots/bots/define/define.py
@@ -1,6 +1,5 @@
 # See readme.md for instructions on running this code.
 import logging
-import json
 import requests
 import html2text
 import string
diff --git a/zulip_bots/zulip_bots/bots/dialogflow/dialogflow.py b/zulip_bots/zulip_bots/bots/dialogflow/dialogflow.py
index 6c3144a..ae99e20 100644
--- a/zulip_bots/zulip_bots/bots/dialogflow/dialogflow.py
+++ b/zulip_bots/zulip_bots/bots/dialogflow/dialogflow.py
@@ -1,11 +1,10 @@
 # See readme.md for instructions on running this code.
 import logging
-from urllib import parse
 import json
 
 import apiai
 
-from typing import Dict, Any, List
+from typing import Any, Dict
 
 help_message = '''DialogFlow bot
 This bot will interact with dialogflow bots.
diff --git a/zulip_bots/zulip_bots/bots/file_uploader/test_file_uploader.py b/zulip_bots/zulip_bots/bots/file_uploader/test_file_uploader.py
index 3018108..1723b67 100644
--- a/zulip_bots/zulip_bots/bots/file_uploader/test_file_uploader.py
+++ b/zulip_bots/zulip_bots/bots/file_uploader/test_file_uploader.py
@@ -1,4 +1,4 @@
-from unittest.mock import patch, MagicMock, Mock
+from unittest.mock import Mock, patch
 
 from zulip_bots.test_lib import (
     get_bot_message_handler,
diff --git a/zulip_bots/zulip_bots/bots/front/front.py b/zulip_bots/zulip_bots/bots/front/front.py
index 03a1c95..dc53a81 100644
--- a/zulip_bots/zulip_bots/bots/front/front.py
+++ b/zulip_bots/zulip_bots/bots/front/front.py
@@ -1,6 +1,6 @@
 import requests
 import re
-from typing import Any, Dict, Optional
+from typing import Any, Dict
 
 class FrontHandler:
     FRONT_API = "https://api2.frontapp.com/conversations/{}"
diff --git a/zulip_bots/zulip_bots/bots/game_of_fifteen/game_of_fifteen.py b/zulip_bots/zulip_bots/bots/game_of_fifteen/game_of_fifteen.py
index 0e1a263..27038f1 100644
--- a/zulip_bots/zulip_bots/bots/game_of_fifteen/game_of_fifteen.py
+++ b/zulip_bots/zulip_bots/bots/game_of_fifteen/game_of_fifteen.py
@@ -1,5 +1,4 @@
 import copy
-import random
 
 from typing import List, Any, Tuple, Dict
 from zulip_bots.game_handler import GameAdapter, BadMoveException
diff --git a/zulip_bots/zulip_bots/bots/giphy/test_giphy.py b/zulip_bots/zulip_bots/bots/giphy/test_giphy.py
index 047cb44..8bf6eb4 100755
--- a/zulip_bots/zulip_bots/bots/giphy/test_giphy.py
+++ b/zulip_bots/zulip_bots/bots/giphy/test_giphy.py
@@ -1,5 +1,5 @@
 from unittest.mock import patch
-from requests.exceptions import HTTPError, ConnectionError
+from requests.exceptions import ConnectionError
 
 from zulip_bots.test_lib import StubBotHandler, BotTestCase, DefaultTests, get_bot_message_handler
 
diff --git a/zulip_bots/zulip_bots/bots/github_detail/github_detail.py b/zulip_bots/zulip_bots/bots/github_detail/github_detail.py
index 83bc290..731b092 100644
--- a/zulip_bots/zulip_bots/bots/github_detail/github_detail.py
+++ b/zulip_bots/zulip_bots/bots/github_detail/github_detail.py
@@ -1,8 +1,5 @@
 import re
-import os
-import sys
 import logging
-import configparser
 
 import requests
 
diff --git a/zulip_bots/zulip_bots/bots/google_search/google_search.py b/zulip_bots/zulip_bots/bots/google_search/google_search.py
index a47769b..d7cb5da 100644
--- a/zulip_bots/zulip_bots/bots/google_search/google_search.py
+++ b/zulip_bots/zulip_bots/bots/google_search/google_search.py
@@ -1,12 +1,11 @@
 # See readme.md for instructions on running this code.
 import logging
-from urllib import parse
 
 import requests
 
 from bs4 import BeautifulSoup
 
-from typing import Dict, Any, Union, List
+from typing import Any, Dict, List
 
 def google_search(keywords: str) -> List[Dict[str, str]]:
     query = {'q': keywords}
diff --git a/zulip_bots/zulip_bots/bots/google_translate/google_translate.py b/zulip_bots/zulip_bots/bots/google_translate/google_translate.py
index 6614568..7db5d30 100644
--- a/zulip_bots/zulip_bots/bots/google_translate/google_translate.py
+++ b/zulip_bots/zulip_bots/bots/google_translate/google_translate.py
@@ -2,7 +2,6 @@
 # googletranslate.conf in this (zulip_bots/bots/googletranslate/) directory.
 
 import requests
-from requests.exceptions import HTTPError, ConnectionError
 
 class GoogleTranslateHandler:
     '''
diff --git a/zulip_bots/zulip_bots/bots/google_translate/test_google_translate.py b/zulip_bots/zulip_bots/bots/google_translate/test_google_translate.py
index 8a1860b..8a777c4 100644
--- a/zulip_bots/zulip_bots/bots/google_translate/test_google_translate.py
+++ b/zulip_bots/zulip_bots/bots/google_translate/test_google_translate.py
@@ -2,7 +2,6 @@ from unittest.mock import patch
 from requests.exceptions import ConnectionError
 
 from zulip_bots.test_lib import BotTestCase, DefaultTests, StubBotHandler
-from zulip_bots.bots.google_translate.google_translate import TranslateError
 
 help_text = '''
 Google translate bot
diff --git a/zulip_bots/zulip_bots/bots/idonethis/idonethis.py b/zulip_bots/zulip_bots/bots/idonethis/idonethis.py
index 7bff9a5..cec1f1f 100644
--- a/zulip_bots/zulip_bots/bots/idonethis/idonethis.py
+++ b/zulip_bots/zulip_bots/bots/idonethis/idonethis.py
@@ -19,7 +19,6 @@ class TeamNotFoundException(Exception):
 class UnknownCommandSyntax(Exception):
     def __init__(self, detail: str) -> None:
         self.detail = detail
-    pass
 
 class UnspecifiedProblemException(Exception):
     pass
diff --git a/zulip_bots/zulip_bots/bots/incident/incident.py b/zulip_bots/zulip_bots/bots/incident/incident.py
index a0b7aef..3bbdfe5 100644
--- a/zulip_bots/zulip_bots/bots/incident/incident.py
+++ b/zulip_bots/zulip_bots/bots/incident/incident.py
@@ -1,10 +1,8 @@
-import html
 import json
-import random
 import re
 from zulip_bots.lib import Any
 
-from typing import Optional, Any, Dict, Tuple
+from typing import Any, Dict, Tuple
 
 QUESTION = 'How should we handle this?'
 
diff --git a/zulip_bots/zulip_bots/bots/jira/jira.py b/zulip_bots/zulip_bots/bots/jira/jira.py
index 10ea287..ea97f6a 100644
--- a/zulip_bots/zulip_bots/bots/jira/jira.py
+++ b/zulip_bots/zulip_bots/bots/jira/jira.py
@@ -1,7 +1,7 @@
 import base64
 import re
 import requests
-from typing import Any, Dict, Iterable, Optional
+from typing import Any, Dict, Optional
 
 GET_REGEX = re.compile('get "(?P<issue_key>.+)"$')
 CREATE_REGEX = re.compile(
diff --git a/zulip_bots/zulip_bots/bots/link_shortener/link_shortener.py b/zulip_bots/zulip_bots/bots/link_shortener/link_shortener.py
index c14b785..be2e616 100644
--- a/zulip_bots/zulip_bots/bots/link_shortener/link_shortener.py
+++ b/zulip_bots/zulip_bots/bots/link_shortener/link_shortener.py
@@ -1,6 +1,5 @@
 import re
 import requests
-import logging
 
 from typing import Any, Dict
 
diff --git a/zulip_bots/zulip_bots/bots/mention/mention.py b/zulip_bots/zulip_bots/bots/mention/mention.py
index b078b41..1519ca5 100644
--- a/zulip_bots/zulip_bots/bots/mention/mention.py
+++ b/zulip_bots/zulip_bots/bots/mention/mention.py
@@ -2,7 +2,6 @@
 
 import requests
 from typing import Any, List, Dict
-import logging
 
 class MentionHandler:
     def initialize(self, bot_handler: Any) -> None:
diff --git a/zulip_bots/zulip_bots/bots/merels/libraries/database.py b/zulip_bots/zulip_bots/bots/merels/libraries/database.py
index c3e96e4..bfef128 100644
--- a/zulip_bots/zulip_bots/bots/merels/libraries/database.py
+++ b/zulip_bots/zulip_bots/bots/merels/libraries/database.py
@@ -10,8 +10,6 @@ finished yet so any matches that are finished will be removed.
 
 import json
 
-from .constants import EMPTY_BOARD
-
 
 class MerelsStorage():
     def __init__(self, topic_name, storage):
diff --git a/zulip_bots/zulip_bots/bots/merels/merels.py b/zulip_bots/zulip_bots/bots/merels/merels.py
index 430e38f..9e723c8 100644
--- a/zulip_bots/zulip_bots/bots/merels/merels.py
+++ b/zulip_bots/zulip_bots/bots/merels/merels.py
@@ -5,7 +5,7 @@ from zulip_bots.bots.merels.libraries import (
     database,
     game_data
 )
-from zulip_bots.game_handler import GameAdapter, SamePlayerMove, GameInstance
+from zulip_bots.game_handler import GameAdapter, SamePlayerMove
 
 class Storage:
     data = {}
diff --git a/zulip_bots/zulip_bots/bots/merels/test/test_database.py b/zulip_bots/zulip_bots/bots/merels/test/test_database.py
index 61fd6ef..c3b3768 100644
--- a/zulip_bots/zulip_bots/bots/merels/test/test_database.py
+++ b/zulip_bots/zulip_bots/bots/merels/test/test_database.py
@@ -1,11 +1,8 @@
-import unittest
 
 from libraries import database
 from libraries import game_data
 from zulip_bots.simple_lib import SimpleStorage
 from zulip_bots.test_lib import BotTestCase, DefaultTests
-from zulip_bots.game_handler import GameInstance
-from merels import MerelsHandler
 
 class DatabaseTest(BotTestCase, DefaultTests):
     bot_name = 'merels'
diff --git a/zulip_bots/zulip_bots/bots/salesforce/salesforce.py b/zulip_bots/zulip_bots/bots/salesforce/salesforce.py
index c4c9e02..5f361e6 100644
--- a/zulip_bots/zulip_bots/bots/salesforce/salesforce.py
+++ b/zulip_bots/zulip_bots/bots/salesforce/salesforce.py
@@ -2,10 +2,8 @@
 
 import simple_salesforce
 from typing import Dict, Any, List
-import getpass
 import re
 import logging
-import json
 from zulip_bots.bots.salesforce.utils import commands, object_types, link_query, default_query
 
 base_help_text = '''Salesforce bot
diff --git a/zulip_bots/zulip_bots/bots/stack_overflow/stack_overflow.py b/zulip_bots/zulip_bots/bots/stack_overflow/stack_overflow.py
index edfe19d..22dadb6 100644
--- a/zulip_bots/zulip_bots/bots/stack_overflow/stack_overflow.py
+++ b/zulip_bots/zulip_bots/bots/stack_overflow/stack_overflow.py
@@ -1,7 +1,5 @@
 import requests
 import logging
-import re
-import urllib
 
 from typing import Optional, Any, Dict
 
diff --git a/zulip_bots/zulip_bots/bots/susi/susi.py b/zulip_bots/zulip_bots/bots/susi/susi.py
index 66514e4..d7818cd 100644
--- a/zulip_bots/zulip_bots/bots/susi/susi.py
+++ b/zulip_bots/zulip_bots/bots/susi/susi.py
@@ -1,5 +1,5 @@
 import requests
-from typing import Dict, Any, Tuple, Union
+from typing import Any, Dict
 
 class SusiHandler:
     '''
diff --git a/zulip_bots/zulip_bots/bots/twitpost/test_twitpost.py b/zulip_bots/zulip_bots/bots/twitpost/test_twitpost.py
index adc4c0d..0a24688 100644
--- a/zulip_bots/zulip_bots/bots/twitpost/test_twitpost.py
+++ b/zulip_bots/zulip_bots/bots/twitpost/test_twitpost.py
@@ -8,7 +8,6 @@ from zulip_bots.test_file_utils import (
     read_bot_fixture_data,
 )
 from unittest.mock import patch
-import tweepy
 
 class TestTwitpostBot(BotTestCase, DefaultTests):
     bot_name = "twitpost"
diff --git a/zulip_bots/zulip_bots/bots/twitpost/twitpost.py b/zulip_bots/zulip_bots/bots/twitpost/twitpost.py
index 23f3e07..01595d9 100644
--- a/zulip_bots/zulip_bots/bots/twitpost/twitpost.py
+++ b/zulip_bots/zulip_bots/bots/twitpost/twitpost.py
@@ -1,6 +1,5 @@
-import zulip
 import tweepy
-from typing import Dict, Any, Union, List, Tuple, Optional
+from typing import Any, Dict
 
 
 class TwitpostBot:
diff --git a/zulip_bots/zulip_bots/bots/virtual_fs/virtual_fs.py b/zulip_bots/zulip_bots/bots/virtual_fs/virtual_fs.py
index a99c45e..73f1d9a 100644
--- a/zulip_bots/zulip_bots/bots/virtual_fs/virtual_fs.py
+++ b/zulip_bots/zulip_bots/bots/virtual_fs/virtual_fs.py
@@ -3,7 +3,7 @@
 import re
 import os
 
-from typing import Any, Dict, List, Tuple, Callable, Set, Union
+from typing import Any, Dict, List, Set, Tuple, Union
 
 class VirtualFsHandler:
     META = {
diff --git a/zulip_bots/zulip_bots/bots/weather/weather.py b/zulip_bots/zulip_bots/bots/weather/weather.py
index c19c093..0403edb 100644
--- a/zulip_bots/zulip_bots/bots/weather/weather.py
+++ b/zulip_bots/zulip_bots/bots/weather/weather.py
@@ -1,7 +1,5 @@
 # See readme.md for instructions on running this code.
 import requests
-import json
-import logging
 
 from typing import Any, Dict
 
diff --git a/zulip_bots/zulip_bots/bots/wikipedia/wikipedia.py b/zulip_bots/zulip_bots/bots/wikipedia/wikipedia.py
index 3e6f757..b554445 100644
--- a/zulip_bots/zulip_bots/bots/wikipedia/wikipedia.py
+++ b/zulip_bots/zulip_bots/bots/wikipedia/wikipedia.py
@@ -1,7 +1,5 @@
 import requests
 import logging
-import re
-import urllib
 from zulip_bots.lib import Any
 
 from typing import Optional, Any, Dict
diff --git a/zulip_bots/zulip_bots/bots/witai/witai.py b/zulip_bots/zulip_bots/bots/witai/witai.py
index 0a63fa5..11256c1 100644
--- a/zulip_bots/zulip_bots/bots/witai/witai.py
+++ b/zulip_bots/zulip_bots/bots/witai/witai.py
@@ -2,7 +2,6 @@
 
 from typing import Dict, Any, Optional, Callable
 import wit
-import sys
 import importlib.util
 
 class WitaiHandler:
diff --git a/zulip_bots/zulip_bots/bots/yoda/yoda.py b/zulip_bots/zulip_bots/bots/yoda/yoda.py
index e940310..b0e2e50 100644
--- a/zulip_bots/zulip_bots/bots/yoda/yoda.py
+++ b/zulip_bots/zulip_bots/bots/yoda/yoda.py
@@ -1,7 +1,6 @@
 # See readme.md for instructions on running this code.
 import logging
 import ssl
-import sys
 import requests
 
 from typing import Any, Dict
diff --git a/zulip_bots/zulip_bots/bots/youtube/youtube.py b/zulip_bots/zulip_bots/bots/youtube/youtube.py
index f74fa4f..bbb5f53 100644
--- a/zulip_bots/zulip_bots/bots/youtube/youtube.py
+++ b/zulip_bots/zulip_bots/bots/youtube/youtube.py
@@ -1,6 +1,5 @@
 import requests
 import logging
-import sys
 
 from requests.exceptions import HTTPError, ConnectionError
 from typing import Dict, Any, Union, List, Tuple, Optional
diff --git a/zulip_bots/zulip_bots/game_handler.py b/zulip_bots/zulip_bots/game_handler.py
index 29dc02d..92c12cc 100644
--- a/zulip_bots/zulip_bots/game_handler.py
+++ b/zulip_bots/zulip_bots/game_handler.py
@@ -4,8 +4,6 @@ import random
 import logging
 from copy import deepcopy
 from typing import Any, Dict, Tuple, List
-from zulip_bots.test_lib import BotTestCase
-import operator
 import random
 
 
diff --git a/zulip_bots/zulip_bots/lib.py b/zulip_bots/zulip_bots/lib.py
index ca0f21a..a2ea6d2 100644
--- a/zulip_bots/zulip_bots/lib.py
+++ b/zulip_bots/zulip_bots/lib.py
@@ -11,7 +11,6 @@ import re
 from typing import Any, Optional, List, Dict, IO, Text
 
 from zulip import Client, ZulipError
-from zulip_bots.custom_exceptions import ConfigValidationError
 
 
 class NoBotConfigException(Exception):
diff --git a/zulip_bots/zulip_bots/provision.py b/zulip_bots/zulip_bots/provision.py
index 55bdecf..ac84008 100755
--- a/zulip_bots/zulip_bots/provision.py
+++ b/zulip_bots/zulip_bots/provision.py
@@ -6,7 +6,6 @@ import os
 import sys
 import subprocess
 import glob
-import pip
 from typing import Iterator
 
 def get_bot_paths() -> Iterator[str]:
diff --git a/zulip_bots/zulip_bots/run.py b/zulip_bots/zulip_bots/run.py
index 0634bf8..ed4b721 100755
--- a/zulip_bots/zulip_bots/run.py
+++ b/zulip_bots/zulip_bots/run.py
@@ -4,7 +4,6 @@ import logging
 import argparse
 import sys
 import os
-from os.path import basename, splitext
 
 from zulip_bots.lib import (
     zulip_env_vars_are_present,
diff --git a/zulip_botserver/zulip_botserver/server.py b/zulip_botserver/zulip_botserver/server.py
index fe204c4..33e2667 100644
--- a/zulip_botserver/zulip_botserver/server.py
+++ b/zulip_botserver/zulip_botserver/server.py
@@ -10,7 +10,7 @@ import importlib.util
 from configparser import MissingSectionHeaderError, NoOptionError
 from flask import Flask, request
 from importlib import import_module
-from typing import Any, Dict, Union, List, Optional
+from typing import Any, Dict, List, Optional
 from types import ModuleType
 from werkzeug.exceptions import BadRequest, Unauthorized