diff --git a/watchman/integration/eden/test_eden_glob_upper_bound.py b/watchman/integration/eden/test_eden_glob_upper_bound.py
index 0e7c7710b476..7c78a4c515c8 100644
--- a/watchman/integration/eden/test_eden_glob_upper_bound.py
+++ b/watchman/integration/eden/test_eden_glob_upper_bound.py
@@ -137,8 +137,10 @@ def test_eden_since_upper_bound_case_insensitive(self) -> None:
             ["mixedCASE/file1", "MIXEDcase/file2"],
         )
         self.assertGlobUpperBound(
-            # We can't bound this query with a glob on a case-sensitive FS.
-            (None if self.isCaseSensitiveMount(root) else {"mixedcase/**"})
+            (
+                # We can't bound this query with a glob on a case-sensitive FS.
+                None if self.isCaseSensitiveMount(root) else {"mixedcase/**"}
+            )
         )
 
     def test_eden_since_upper_bound_includedotfiles(self) -> None:
diff --git a/watchman/integration/eden/test_eden_unmount.py b/watchman/integration/eden/test_eden_unmount.py
index d440412b3054..8f43acdfbc70 100644
--- a/watchman/integration/eden/test_eden_unmount.py
+++ b/watchman/integration/eden/test_eden_unmount.py
@@ -19,7 +19,6 @@ def populate(repo):
 
 class TestEdenUnmount(WatchmanEdenTestCase.WatchmanEdenTestCase):
     def test_eden_unmount(self) -> None:
-
         root = self.makeEdenMount(populate)
         self.watchmanCommand("watch", root)
 
diff --git a/watchman/integration/lib/path_utils.py b/watchman/integration/lib/path_utils.py
index 9cff6576929d..bfca3a7af238 100644
--- a/watchman/integration/lib/path_utils.py
+++ b/watchman/integration/lib/path_utils.py
@@ -15,7 +15,6 @@
 if os.name == "nt":
 
     def open_file_win(path):
-
         create_file = ctypes.windll.kernel32.CreateFileW
 
         c_path = ctypes.create_unicode_buffer(path)
diff --git a/watchman/integration/test_dir_move.py b/watchman/integration/test_dir_move.py
index 07058c7ca44d..bf620d465ea5 100644
--- a/watchman/integration/test_dir_move.py
+++ b/watchman/integration/test_dir_move.py
@@ -17,7 +17,6 @@
 
 @WatchmanTestCase.expand_matrix
 class TestDirMove(WatchmanTestCase.WatchmanTestCase):
-
     # testing this is flaky at best on windows due to latency
     # and exclusivity of file handles, so skip it.
     def checkOSApplicability(self) -> None:
diff --git a/watchman/integration/test_path_generator.py b/watchman/integration/test_path_generator.py
index e5cbd05326ef..6761982e3ff0 100644
--- a/watchman/integration/test_path_generator.py
+++ b/watchman/integration/test_path_generator.py
@@ -48,7 +48,9 @@ def test_path_generator_case(self) -> None:
 
             self.assertFileListsEqual(
                 self.watchmanCommand(
-                    "query", root, {"fields": ["name"], "path": ["foo"]}  # not Foo!
+                    "query",
+                    root,
+                    {"fields": ["name"], "path": ["foo"]},  # not Foo!
                 )["files"],
                 [],
                 message="Case insensitive matching not implemented \
@@ -89,7 +91,9 @@ def test_path_generator_relative_root(self) -> None:
 
             self.assertFileListsEqual(
                 self.watchmanCommand(
-                    "query", root, {"fields": ["name"], "path": ["foo"]}  # not Foo!
+                    "query",
+                    root,
+                    {"fields": ["name"], "path": ["foo"]},  # not Foo!
                 )["files"],
                 [],
                 message="Case insensitive matching not implemented \
diff --git a/watchman/python/tests/tests.py b/watchman/python/tests/tests.py
index a2e991fc2a07..5b2c4410fcdf 100755
--- a/watchman/python/tests/tests.py
+++ b/watchman/python/tests/tests.py
@@ -38,7 +38,7 @@
         )
     )
 
-PILE_OF_POO = "\U0001F4A9"
+PILE_OF_POO = "\U0001f4a9"
 NON_UTF8_STRING = b"\xff\xff\xff"
 
 
diff --git a/watchman/test/async/AsyncWatchmanTestCase.py b/watchman/test/async/AsyncWatchmanTestCase.py
index ca63a8c23376..737a2fd0d6e7 100644
--- a/watchman/test/async/AsyncWatchmanTestCase.py
+++ b/watchman/test/async/AsyncWatchmanTestCase.py
@@ -43,7 +43,6 @@ def touch_relative(self, base, *fname):
         self.touch(fname, None)
 
     def watchman_command(self, *args):
-
         task = asyncio.wait_for(self.client.query(*args), 10)
         return self.loop.run_until_complete(task)