diff --git a/datasette/cli.py b/datasette/cli.py
index adcb07d9..6eab93af 100644
--- a/datasette/cli.py
+++ b/datasette/cli.py
@@ -1,6 +1,5 @@
 import asyncio
 import json
-import os
 import shutil
 import sys
 from subprocess import call
@@ -113,7 +112,6 @@ class PublishAliases(click.Group):
 @cli.group(cls=PublishAliases)
 def publish():
     "Publish specified SQLite database files to the internet along with a Datasette-powered interface and API"
-    pass
 
 
 # Register publish plugins
diff --git a/datasette/facets.py b/datasette/facets.py
index f1614c0d..03baaf08 100644
--- a/datasette/facets.py
+++ b/datasette/facets.py
@@ -1,5 +1,4 @@
 import json
-import re
 import urllib
 
 from datasette import hookimpl
diff --git a/datasette/publish/cloudrun.py b/datasette/publish/cloudrun.py
index 153bb86e..f64ca3ec 100644
--- a/datasette/publish/cloudrun.py
+++ b/datasette/publish/cloudrun.py
@@ -1,4 +1,3 @@
-import json
 from subprocess import check_call, check_output
 
 import click
diff --git a/datasette/renderer.py b/datasette/renderer.py
index 326c4480..b2c71c40 100644
--- a/datasette/renderer.py
+++ b/datasette/renderer.py
@@ -21,7 +21,6 @@ def convert_specific_columns_to_json(rows, columns, json_cols):
                     value = json.loads(value)
                 except (TypeError, ValueError) as e:
                     print(e)
-                    pass
             new_row.append(value)
         new_rows.append(new_row)
     return new_rows
diff --git a/datasette/utils/__init__.py b/datasette/utils/__init__.py
index c8f8049e..d1999af5 100644
--- a/datasette/utils/__init__.py
+++ b/datasette/utils/__init__.py
@@ -2,7 +2,6 @@ import base64
 import hashlib
 import imp
 import json
-import numbers
 import os
 import re
 import shlex
diff --git a/datasette/views/base.py b/datasette/views/base.py
index c6a61109..e726ea61 100644
--- a/datasette/views/base.py
+++ b/datasette/views/base.py
@@ -4,7 +4,6 @@ import itertools
 import re
 import time
 import urllib
-from html import escape
 
 import jinja2
 import pint
diff --git a/tests/conftest.py b/tests/conftest.py
index 6cc1f044..fb5a8a28 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -13,6 +13,7 @@ def pytest_unconfigure(config):
 def pytest_collection_modifyitems(items):
     # Ensure test_black.py and test_inspect.py run first before any asyncio code kicks in
     move_to_front(items, "test_black")
+    move_to_front(items, "test_isort")
     move_to_front(items, "test_inspect_cli")
     move_to_front(items, "test_inspect_cli_writes_to_file")
     move_to_front(items, "test_spatialite_error_if_attempt_to_open_spatialite")
diff --git a/tests/test_facets.py b/tests/test_facets.py
index b483a914..536f7808 100644
--- a/tests/test_facets.py
+++ b/tests/test_facets.py
@@ -1,5 +1,3 @@
-from collections import namedtuple
-
 import pytest
 
 from datasette.facets import ArrayFacet, ColumnFacet, DateFacet, ManyToManyFacet
diff --git a/tests/test_lint.py b/tests/test_lint.py
index 69c8ab5d..52d6e40f 100644
--- a/tests/test_lint.py
+++ b/tests/test_lint.py
@@ -34,5 +34,7 @@ def test_isort(path):
     result = isort.SortImports(path, check=True)
     assert (
         not result.incorrectly_sorted
-    ), "{} has incorrectly sorted imports, fix with 'isort -rc tests && isort -rc datasette && black tests datasette'"
+    ), "{} has incorrectly sorted imports, fix with 'isort -rc tests && isort -rc datasette && black tests datasette'".format(
+        path
+    )
     sys.stdout = stdout