ci: update mypy config and fix some errors

mypy.ini

@@ -3,11 +3,14 @@ pretty = True
 show_error_context = True
 show_column_numbers = True
 show_error_end = True
-warn_redundant_casts = True
-warn_unused_ignores = True
+
 check_untyped_defs = True
+
+# see https://mypy.readthedocs.io/en/stable/error_code_list2.html
+warn_redundant_casts = True
 strict_equality = True
-enable_error_code = possibly-undefined
+warn_unused_ignores = True
+enable_error_code = deprecated,redundant-expr,possibly-undefined,truthy-bool,truthy-iterable,ignore-without-code,unused-awaitable
 
 # an example of suppressing
 # [mypy-my.config.repos.pdfannots.pdfannots]

src/cachew/__init__.py

@@ -808,7 +808,7 @@ def cached_items():
         new_hash: SourceHash = json.dumps(new_hash_d)
         logger.debug(f'new hash: {new_hash}')
 
-        marshall = CachewMarshall(Type_=cls)
+        marshall: CachewMarshall[Any] = CachewMarshall(Type_=cls)
 
         with BackendCls(cache_path=db_path, logger=logger) as backend:
             old_hash = backend.get_old_hash()

src/cachew/legacy.py

@@ -158,7 +158,7 @@ def python_type(self):
     def process_literal_param(self, value, dialect):
         raise NotImplementedError()  # make pylint happy
 
-    def process_result_value(self, value: Optional[str], dialect) -> Optional[date]:  # type: ignore
+    def process_result_value(self, value: Optional[str], dialect) -> Optional[date]:  # type: ignore[explicit-override,override]
         res = super().process_result_value(value, dialect)
         if res is None:
             return None
@@ -246,6 +246,7 @@ def strip_optional(cls) -> tuple[type, bool]:
 
 def strip_generic(tp):
     """
+    >>> from typing import List
     >>> strip_generic(List[int])
     <class 'list'>
     >>> strip_generic(str)
@@ -345,7 +346,7 @@ def make(tp: type[NT], name: Optional[str] = None) -> 'NTBinder[NT]':
                 span = sum(f.span for f in fields) + (1 if optional else 0)
         return NTBinder(
             name=name,
-            type_=tp,
+            type_=tp,  # type: ignore[arg-type]
             span=span,
             primitive=primitive,
             optional=optional,
@@ -455,17 +456,17 @@ def flatten(self, level=0):
 def test_mypy_annotations() -> None:
     # mypy won't handle, so this has to be dynamic
     vs = []
-    for t in Types.__args__:  # type: ignore
+    for t in Types.__args__:  # type: ignore[attr-defined]
         (arg,) = t.__args__
         vs.append(arg)
 
     def types(ts):
         return sorted(ts, key=lambda t: str(t))
 
-    assert types(vs) == types(Values.__args__)  # type: ignore
+    assert types(vs) == types(Values.__args__)  # type: ignore[attr-defined]
 
     for p in PRIMITIVE_TYPES:
-        assert p in Values.__args__  # type: ignore
+        assert p in Values.__args__  # type: ignore[attr-defined]
 
 
 @parametrize(

src/cachew/tests/marshall.py

@@ -115,11 +115,11 @@ def union_hook(data, type_):
         for i in range(count):
             jsons[i] = to_json(objects[i])
 
-    strs: list[bytes] = [None for _ in range(count)]  # type: ignore
+    strs: list[bytes] = [None for _ in range(count)]  # type: ignore[misc]
     with profile(test_name + ':json_dump'), timer(f'json dump     {count} objects of type {Type}'):
         for i in range(count):
             # TODO any orjson options to speed up?
-            strs[i] = orjson.dumps(jsons[i])  # pylint: disable=no-member
+            strs[i] = orjson.dumps(jsons[i])
 
     db = Path('/tmp/cachew_test/db.sqlite')
     if db.parent.exists():
@@ -132,7 +132,7 @@ def union_hook(data, type_):
             conn.executemany('INSERT INTO data (value) VALUES (?)', [(s,) for s in strs])
         conn.close()
 
-    strs2: list[bytes] = [None for _ in range(count)]  # type: ignore
+    strs2: list[bytes] = [None for _ in range(count)]  # type: ignore[misc]
     with profile(test_name + ':sqlite_load'), timer(f'sqlite load   {count} objects of type {Type}'):
         with sqlite3.connect(db) as conn:
             i = 0
@@ -148,7 +148,7 @@ def union_hook(data, type_):
             for s in strs:
                 fw.write(s + b'\n')
 
-    strs3: list[bytes] = [None for _ in range(count)]  # type: ignore
+    strs3: list[bytes] = [None for _ in range(count)]  # type: ignore[misc]
     with profile(test_name + ':jsonl_load'), timer(f'jsonl load    {count} objects of type {Type}'):
         i = 0
         with cache.open('rb') as fr:
@@ -163,7 +163,7 @@ def union_hook(data, type_):
     with profile(test_name + ':json_load'), timer(f'json load     {count} objects of type {Type}'):
         for i in range(count):
             # TODO any orjson options to speed up?
-            jsons2[i] = orjson.loads(strs2[i])  # pylint: disable=no-member
+            jsons2[i] = orjson.loads(strs2[i])
 
     objects2 = [None for _ in range(count)]
     with profile(test_name + ':deserialize'), timer(f'deserializing {count} objects of type {Type}'):

src/cachew/tests/test_cachew.py

@@ -186,7 +186,7 @@ def inner(_it, _timer{init}):
     _t1 = _timer()
     return _t1 - _t0, retval
 """
-    timeit.template = template  # type: ignore
+    timeit.template = template  # type: ignore[attr-defined]
 
     timer = timeit.Timer(lambda: len(list(data())))
     t, cnt = cast(tuple[float, int], timer.timeit(number=1))
@@ -973,7 +973,7 @@ def orig2():
         settings.THROW_ON_ERROR = throw
 
         with ctx:
-            fun = cachew(cache_path=lambda: 1 + 'bad_path_provider')(orig)  # type: ignore
+            fun = cachew(cache_path=lambda: 1 + 'bad_path_provider')(orig)  # type: ignore[arg-type,misc,operator]
             assert list(fun()) == [123]
             assert list(fun()) == [123]