Update mypy and mypy-zope (#13925)

* Update mypy and mypy-zope

* Unignore assigning to LogRecord attributes

Presumably https://github.com/python/typeshed/pull/8064 makes this ok

Cherry-picked from #13521

* Remove unused ignores due to mypy ParamSpec fixes

https://github.com/python/mypy/pull/12668

Cherry-picked from #13521

* Remove additional unused ignores

* Fix new mypy complaints related to `assertGreater`

Presumably due to https://github.com/python/typeshed/pull/8077

* Changelog

* Reword changelog

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

10 files changed, 60 insertions, 67 deletions

diff --git a/changelog.d/13925.misc b/changelog.d/13925.misc
new file mode 100644
index 0000000000..f490ab122e
--- /dev/null
+++ b/changelog.d/13925.misc
@@ -0,0 +1 @@
+Update mypy (0.950 -> 0.981) and mypy-zope (0.3.7 -> 0.3.11).
diff --git a/poetry.lock b/poetry.lock
index 0f6d1cfa69..63ef8573a0 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -573,11 +573,11 @@ python-versions = "*"
 
 [[package]]
 name = "mypy"
-version = "0.950"
+version = "0.981"
 description = "Optional static typing for Python"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [package.dependencies]
 mypy-extensions = ">=0.4.3"
@@ -600,14 +600,14 @@ python-versions = "*"
 
 [[package]]
 name = "mypy-zope"
-version = "0.3.7"
+version = "0.3.11"
 description = "Plugin for mypy to support zope interfaces"
 category = "dev"
 optional = false
 python-versions = "*"
 
 [package.dependencies]
-mypy = "0.950"
+mypy = "0.981"
 "zope.interface" = "*"
 "zope.schema" = "*"
 
@@ -2162,37 +2162,38 @@ msgpack = [
     {file = "msgpack-1.0.3.tar.gz", hash = "sha256:51fdc7fb93615286428ee7758cecc2f374d5ff363bdd884c7ea622a7a327a81e"},
 ]
 mypy = [
-    {file = "mypy-0.950-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:cf9c261958a769a3bd38c3e133801ebcd284ffb734ea12d01457cb09eacf7d7b"},
-    {file = "mypy-0.950-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:b5b5bd0ffb11b4aba2bb6d31b8643902c48f990cc92fda4e21afac658044f0c0"},
-    {file = "mypy-0.950-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:5e7647df0f8fc947388e6251d728189cfadb3b1e558407f93254e35abc026e22"},
-    {file = "mypy-0.950-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:eaff8156016487c1af5ffa5304c3e3fd183edcb412f3e9c72db349faf3f6e0eb"},
-    {file = "mypy-0.950-cp310-cp310-win_amd64.whl", hash = "sha256:563514c7dc504698fb66bb1cf897657a173a496406f1866afae73ab5b3cdb334"},
-    {file = "mypy-0.950-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:dd4d670eee9610bf61c25c940e9ade2d0ed05eb44227275cce88701fee014b1f"},
-    {file = "mypy-0.950-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:ca75ecf2783395ca3016a5e455cb322ba26b6d33b4b413fcdedfc632e67941dc"},
-    {file = "mypy-0.950-cp36-cp36m-win_amd64.whl", hash = "sha256:6003de687c13196e8a1243a5e4bcce617d79b88f83ee6625437e335d89dfebe2"},
-    {file = "mypy-0.950-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:4c653e4846f287051599ed8f4b3c044b80e540e88feec76b11044ddc5612ffed"},
-    {file = "mypy-0.950-cp37-cp37m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:e19736af56947addedce4674c0971e5dceef1b5ec7d667fe86bcd2b07f8f9075"},
-    {file = "mypy-0.950-cp37-cp37m-win_amd64.whl", hash = "sha256:ef7beb2a3582eb7a9f37beaf38a28acfd801988cde688760aea9e6cc4832b10b"},
-    {file = "mypy-0.950-cp38-cp38-macosx_10_9_universal2.whl", hash = "sha256:0112752a6ff07230f9ec2f71b0d3d4e088a910fdce454fdb6553e83ed0eced7d"},
-    {file = "mypy-0.950-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:ee0a36edd332ed2c5208565ae6e3a7afc0eabb53f5327e281f2ef03a6bc7687a"},
-    {file = "mypy-0.950-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:77423570c04aca807508a492037abbd72b12a1fb25a385847d191cd50b2c9605"},
-    {file = "mypy-0.950-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:5ce6a09042b6da16d773d2110e44f169683d8cc8687e79ec6d1181a72cb028d2"},
-    {file = "mypy-0.950-cp38-cp38-win_amd64.whl", hash = "sha256:5b231afd6a6e951381b9ef09a1223b1feabe13625388db48a8690f8daa9b71ff"},
-    {file = "mypy-0.950-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:0384d9f3af49837baa92f559d3fa673e6d2652a16550a9ee07fc08c736f5e6f8"},
-    {file = "mypy-0.950-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:1fdeb0a0f64f2a874a4c1f5271f06e40e1e9779bf55f9567f149466fc7a55038"},
-    {file = "mypy-0.950-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:61504b9a5ae166ba5ecfed9e93357fd51aa693d3d434b582a925338a2ff57fd2"},
-    {file = "mypy-0.950-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:a952b8bc0ae278fc6316e6384f67bb9a396eb30aced6ad034d3a76120ebcc519"},
-    {file = "mypy-0.950-cp39-cp39-win_amd64.whl", hash = "sha256:eaea21d150fb26d7b4856766e7addcf929119dd19fc832b22e71d942835201ef"},
-    {file = "mypy-0.950-py3-none-any.whl", hash = "sha256:a4d9898f46446bfb6405383b57b96737dcfd0a7f25b748e78ef3e8c576bba3cb"},
-    {file = "mypy-0.950.tar.gz", hash = "sha256:1b333cfbca1762ff15808a0ef4f71b5d3eed8528b23ea1c3fb50543c867d68de"},
+    {file = "mypy-0.981-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:4bc460e43b7785f78862dab78674e62ec3cd523485baecfdf81a555ed29ecfa0"},
+    {file = "mypy-0.981-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:756fad8b263b3ba39e4e204ee53042671b660c36c9017412b43af210ddee7b08"},
+    {file = "mypy-0.981-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:a16a0145d6d7d00fbede2da3a3096dcc9ecea091adfa8da48fa6a7b75d35562d"},
+    {file = "mypy-0.981-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ce65f70b14a21fdac84c294cde75e6dbdabbcff22975335e20827b3b94bdbf49"},
+    {file = "mypy-0.981-cp310-cp310-musllinux_1_1_x86_64.whl", hash = "sha256:6e35d764784b42c3e256848fb8ed1d4292c9fc0098413adb28d84974c095b279"},
+    {file = "mypy-0.981-cp310-cp310-win_amd64.whl", hash = "sha256:e53773073c864d5f5cec7f3fc72fbbcef65410cde8cc18d4f7242dea60dac52e"},
+    {file = "mypy-0.981-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:6ee196b1d10b8b215e835f438e06965d7a480f6fe016eddbc285f13955cca659"},
+    {file = "mypy-0.981-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:8ad21d4c9d3673726cf986ea1d0c9fb66905258709550ddf7944c8f885f208be"},
+    {file = "mypy-0.981-cp37-cp37m-musllinux_1_1_x86_64.whl", hash = "sha256:d1debb09043e1f5ee845fa1e96d180e89115b30e47c5d3ce53bc967bab53f62d"},
+    {file = "mypy-0.981-cp37-cp37m-win_amd64.whl", hash = "sha256:9f362470a3480165c4c6151786b5379351b790d56952005be18bdbdd4c7ce0ae"},
+    {file = "mypy-0.981-cp38-cp38-macosx_10_9_universal2.whl", hash = "sha256:c9e0efb95ed6ca1654951bd5ec2f3fa91b295d78bf6527e026529d4aaa1e0c30"},
+    {file = "mypy-0.981-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:e178eaffc3c5cd211a87965c8c0df6da91ed7d258b5fc72b8e047c3771317ddb"},
+    {file = "mypy-0.981-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:06e1eac8d99bd404ed8dd34ca29673c4346e76dd8e612ea507763dccd7e13c7a"},
+    {file = "mypy-0.981-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:fa38f82f53e1e7beb45557ff167c177802ba7b387ad017eab1663d567017c8ee"},
+    {file = "mypy-0.981-cp38-cp38-musllinux_1_1_x86_64.whl", hash = "sha256:64e1f6af81c003f85f0dfed52db632817dabb51b65c0318ffbf5ff51995bbb08"},
+    {file = "mypy-0.981-cp38-cp38-win_amd64.whl", hash = "sha256:e1acf62a8c4f7c092462c738aa2c2489e275ed386320c10b2e9bff31f6f7e8d6"},
+    {file = "mypy-0.981-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:b6ede64e52257931315826fdbfc6ea878d89a965580d1a65638ef77cb551f56d"},
+    {file = "mypy-0.981-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:eb3978b191b9fa0488524bb4ffedf2c573340e8c2b4206fc191d44c7093abfb7"},
+    {file = "mypy-0.981-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:77f8fcf7b4b3cc0c74fb33ae54a4cd00bb854d65645c48beccf65fa10b17882c"},
+    {file = "mypy-0.981-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:f64d2ce043a209a297df322eb4054dfbaa9de9e8738291706eaafda81ab2b362"},
+    {file = "mypy-0.981-cp39-cp39-musllinux_1_1_x86_64.whl", hash = "sha256:2ee3dbc53d4df7e6e3b1c68ac6a971d3a4fb2852bf10a05fda228721dd44fae1"},
+    {file = "mypy-0.981-cp39-cp39-win_amd64.whl", hash = "sha256:8e8e49aa9cc23aa4c926dc200ce32959d3501c4905147a66ce032f05cb5ecb92"},
+    {file = "mypy-0.981-py3-none-any.whl", hash = "sha256:794f385653e2b749387a42afb1e14c2135e18daeb027e0d97162e4b7031210f8"},
+    {file = "mypy-0.981.tar.gz", hash = "sha256:ad77c13037d3402fbeffda07d51e3f228ba078d1c7096a73759c9419ea031bf4"},
 ]
 mypy-extensions = [
     {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
     {file = "mypy_extensions-0.4.3.tar.gz", hash = "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"},
 ]
 mypy-zope = [
-    {file = "mypy-zope-0.3.7.tar.gz", hash = "sha256:9da171e78e8ef7ac8922c86af1a62f1b7f3244f121020bd94a2246bc3f33c605"},
-    {file = "mypy_zope-0.3.7-py3-none-any.whl", hash = "sha256:9c7637d066e4d1bafa0651abc091c752009769098043b236446e6725be2bc9c2"},
+    {file = "mypy-zope-0.3.11.tar.gz", hash = "sha256:d4255f9f04d48c79083bbd4e2fea06513a6ac7b8de06f8c4ce563fd85142ca05"},
+    {file = "mypy_zope-0.3.11-py3-none-any.whl", hash = "sha256:ec080a6508d1f7805c8d2054f9fdd13c849742ce96803519e1fdfa3d3cab7140"},
 ]
 netaddr = [
     {file = "netaddr-0.8.0-py2.py3-none-any.whl", hash = "sha256:9666d0232c32d2656e5e5f8d735f58fd6c7457ce52fc21c98d45f2af78f990ac"},
diff --git a/scripts-dev/check_pydantic_models.py b/scripts-dev/check_pydantic_models.py
index d0fb811bdb..9f2b7ded5b 100755
--- a/scripts-dev/check_pydantic_models.py
+++ b/scripts-dev/check_pydantic_models.py
@@ -88,10 +88,9 @@ def make_wrapper(factory: Callable[P, R]) -> Callable[P, R]:
 
     @functools.wraps(factory)
     def wrapper(*args: P.args, **kwargs: P.kwargs) -> R:
-        # type-ignore: should be redundant once we can use https://github.com/python/mypy/pull/12668
-        if "strict" not in kwargs:  # type: ignore[attr-defined]
+        if "strict" not in kwargs:
             raise MissingStrictInConstrainedTypeException(factory.__name__)
-        if not kwargs["strict"]:  # type: ignore[index]
+        if not kwargs["strict"]:
             raise MissingStrictInConstrainedTypeException(factory.__name__)
         return factory(*args, **kwargs)
 
diff --git a/synapse/app/_base.py b/synapse/app/_base.py
index 9a24bed0a0..000912e86e 100644
--- a/synapse/app/_base.py
+++ b/synapse/app/_base.py
@@ -98,9 +98,7 @@ def register_sighup(func: Callable[P, None], *args: P.args, **kwargs: P.kwargs)
         func: Function to be called when sent a SIGHUP signal.
         *args, **kwargs: args and kwargs to be passed to the target function.
     """
-    # This type-ignore should be redundant once we use a mypy release with
-    # https://github.com/python/mypy/pull/12668.
-    _sighup_callbacks.append((func, args, kwargs))  # type: ignore[arg-type]
+    _sighup_callbacks.append((func, args, kwargs))
 
 
 def start_worker_reactor(
diff --git a/synapse/logging/context.py b/synapse/logging/context.py
index fd9cb97920..6a08ffed64 100644
--- a/synapse/logging/context.py
+++ b/synapse/logging/context.py
@@ -586,7 +586,7 @@ class LoggingContextFilter(logging.Filter):
             True to include the record in the log output.
         """
         context = current_context()
-        record.request = self._default_request  # type: ignore
+        record.request = self._default_request
 
         # context should never be None, but if it somehow ends up being, then
         # we end up in a death spiral of infinite loops, so let's check, for
@@ -594,21 +594,21 @@ class LoggingContextFilter(logging.Filter):
         if context is not None:
             # Logging is interested in the request ID. Note that for backwards
             # compatibility this is stored as the "request" on the record.
-            record.request = str(context)  # type: ignore
+            record.request = str(context)
 
             # Add some data from the HTTP request.
             request = context.request
             if request is None:
                 return True
 
-            record.ip_address = request.ip_address  # type: ignore
-            record.site_tag = request.site_tag  # type: ignore
-            record.requester = request.requester  # type: ignore
-            record.authenticated_entity = request.authenticated_entity  # type: ignore
-            record.method = request.method  # type: ignore
-            record.url = request.url  # type: ignore
-            record.protocol = request.protocol  # type: ignore
-            record.user_agent = request.user_agent  # type: ignore
+            record.ip_address = request.ip_address
+            record.site_tag = request.site_tag
+            record.requester = request.requester
+            record.authenticated_entity = request.authenticated_entity
+            record.method = request.method
+            record.url = request.url
+            record.protocol = request.protocol
+            record.user_agent = request.user_agent
 
         return True
 
diff --git a/synapse/logging/opentracing.py b/synapse/logging/opentracing.py
index ca2735dd6d..8ce5a2a338 100644
--- a/synapse/logging/opentracing.py
+++ b/synapse/logging/opentracing.py
@@ -992,9 +992,9 @@ def tag_args(func: Callable[P, R]) -> Callable[P, R]:
         # FIXME: We could update this to handle any type of function by ignoring the
         #   first argument only if it's named `self` or `cls`. This isn't fool-proof
         #   but handles the idiomatic cases.
-        for i, arg in enumerate(args[1:], start=1):  # type: ignore[index]
+        for i, arg in enumerate(args[1:], start=1):
             set_tag(SynapseTags.FUNC_ARG_PREFIX + argspec.args[i], str(arg))
-        set_tag(SynapseTags.FUNC_ARGS, str(args[len(argspec.args) :]))  # type: ignore[index]
+        set_tag(SynapseTags.FUNC_ARGS, str(args[len(argspec.args) :]))
         set_tag(SynapseTags.FUNC_KWARGS, str(kwargs))
         yield
 
diff --git a/synapse/storage/database.py b/synapse/storage/database.py
index bb28ded1b5..a252f8eaa0 100644
--- a/synapse/storage/database.py
+++ b/synapse/storage/database.py
@@ -290,8 +290,7 @@ class LoggingTransaction:
         # LoggingTransaction isn't expecting there to be any callbacks; assert that
         # is not the case.
         assert self.after_callbacks is not None
-        # type-ignore: need mypy containing https://github.com/python/mypy/pull/12668
-        self.after_callbacks.append((callback, args, kwargs))  # type: ignore[arg-type]
+        self.after_callbacks.append((callback, args, kwargs))
 
     def async_call_after(
         self, callback: Callable[P, Awaitable], *args: P.args, **kwargs: P.kwargs
@@ -312,8 +311,7 @@ class LoggingTransaction:
         # LoggingTransaction isn't expecting there to be any callbacks; assert that
         # is not the case.
         assert self.async_after_callbacks is not None
-        # type-ignore: need mypy containing https://github.com/python/mypy/pull/12668
-        self.async_after_callbacks.append((callback, args, kwargs))  # type: ignore[arg-type]
+        self.async_after_callbacks.append((callback, args, kwargs))
 
     def call_on_exception(
         self, callback: Callable[P, object], *args: P.args, **kwargs: P.kwargs
@@ -331,8 +329,7 @@ class LoggingTransaction:
         # LoggingTransaction isn't expecting there to be any callbacks; assert that
         # is not the case.
         assert self.exception_callbacks is not None
-        # type-ignore: need mypy containing https://github.com/python/mypy/pull/12668
-        self.exception_callbacks.append((callback, args, kwargs))  # type: ignore[arg-type]
+        self.exception_callbacks.append((callback, args, kwargs))
 
     def fetchone(self) -> Optional[Tuple]:
         return self.txn.fetchone()
@@ -421,10 +418,7 @@ class LoggingTransaction:
         sql = self.database_engine.convert_param_style(sql)
         if args:
             try:
-                # The type-ignore should be redundant once mypy releases a version with
-                # https://github.com/python/mypy/pull/12668. (`args` might be empty,
-                # (but we'll catch the index error if so.)
-                sql_logger.debug("[SQL values] {%s} %r", self.name, args[0])  # type: ignore[index]
+                sql_logger.debug("[SQL values] {%s} %r", self.name, args[0])
             except Exception:
                 # Don't let logging failures stop SQL from working
                 pass
@@ -655,9 +649,7 @@ class DatabasePool:
         # For now, we just log an error, and hope that it works on the first attempt.
         # TODO: raise an exception.
 
-        # Type-ignore Mypy doesn't yet consider ParamSpec.args to be iterable; see
-        # https://github.com/python/mypy/pull/12668
-        for i, arg in enumerate(args):  # type: ignore[arg-type, var-annotated]
+        for i, arg in enumerate(args):
             if inspect.isgenerator(arg):
                 logger.error(
                     "Programming error: generator passed to new_transaction as "
@@ -665,9 +657,7 @@ class DatabasePool:
                     i,
                     func,
                 )
-        # Type-ignore Mypy doesn't yet consider ParamSpec.args to be a mapping; see
-        # https://github.com/python/mypy/pull/12668
-        for name, val in kwargs.items():  # type: ignore[attr-defined]
+        for name, val in kwargs.items():
             if inspect.isgenerator(val):
                 logger.error(
                     "Programming error: generator passed to new_transaction as "
diff --git a/synapse/storage/databases/main/search.py b/synapse/storage/databases/main/search.py
index f6e24b68d2..1b79acf955 100644
--- a/synapse/storage/databases/main/search.py
+++ b/synapse/storage/databases/main/search.py
@@ -641,7 +641,7 @@ class SearchStore(SearchBackgroundUpdateStore):
             raise Exception("Unrecognized database engine")
 
         # mypy expects to append only a `str`, not an `int`
-        args.append(limit)  # type: ignore[arg-type]
+        args.append(limit)
 
         results = await self.db_pool.execute(
             "search_rooms", self.db_pool.cursor_to_dict, sql, *args
diff --git a/tests/storage/test_monthly_active_users.py b/tests/storage/test_monthly_active_users.py
index e8b4a5644b..3da8221109 100644
--- a/tests/storage/test_monthly_active_users.py
+++ b/tests/storage/test_monthly_active_users.py
@@ -96,8 +96,12 @@ class MonthlyActiveUsersTestCase(unittest.HomeserverTestCase):
 
         # Test each of the registered users is marked as active
         timestamp = self.get_success(self.store.user_last_seen_monthly_active(user1))
+        # Mypy notes that one shouldn't compare Optional[int] to 0 with assertGreater.
+        # Check that timestamp really is an int.
+        assert timestamp is not None
         self.assertGreater(timestamp, 0)
         timestamp = self.get_success(self.store.user_last_seen_monthly_active(user2))
+        assert timestamp is not None
         self.assertGreater(timestamp, 0)
 
         # Test that users with reserved 3pids are not removed from the MAU table
@@ -166,9 +170,11 @@ class MonthlyActiveUsersTestCase(unittest.HomeserverTestCase):
         self.get_success(self.store.upsert_monthly_active_user(user_id2))
 
         result = self.get_success(self.store.user_last_seen_monthly_active(user_id1))
+        assert result is not None
         self.assertGreater(result, 0)
 
         result = self.get_success(self.store.user_last_seen_monthly_active(user_id3))
+        assert result is not None
         self.assertNotEqual(result, 0)
 
     @override_config({"max_mau_value": 5})
diff --git a/tests/utils.py b/tests/utils.py
index 65db437697..045a8b5fa7 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -270,9 +270,7 @@ class MockClock:
         *args: P.args,
         **kwargs: P.kwargs,
     ) -> None:
-        # This type-ignore should be redundant once we use a mypy release with
-        # https://github.com/python/mypy/pull/12668.
-        self.loopers.append(Looper(function, interval / 1000.0, self.now, args, kwargs))  # type: ignore[arg-type]
+        self.loopers.append(Looper(function, interval / 1000.0, self.now, args, kwargs))
 
     def cancel_call_later(self, timer: Timer, ignore_errs: bool = False) -> None:
         if timer.expired: