Fix final typing errors (#1939)

pyproject.toml

@@ -198,33 +198,6 @@ module = [
 ]
 ignore_errors = true
 
-[[tool.mypy.overrides]]
-module = [
-    "tests.*",
-]
-check_untyped_defs = false
-
-[[tool.mypy.overrides]]
-module = [
-    "zarr.array",
-    "zarr.buffer"
-]
-disallow_untyped_calls = false
-
-[[tool.mypy.overrides]]
-module = [
-    "zarr.array",
-]
-disallow_untyped_defs = false
-
-
-[[tool.mypy.overrides]]
-module = [
-    "zarr.metadata",
-    "zarr.store.remote"
-]
-warn_return_any = false
-
 [tool.pytest.ini_options]
 minversion = "7"
 testpaths = ["tests"]

src/zarr/array.py

@@ -473,8 +473,8 @@ async def update_attributes(self, new_attributes: dict[str, JSON]) -> AsyncArray
     def __repr__(self) -> str:
         return f"<AsyncArray {self.store_path} shape={self.shape} dtype={self.dtype}>"
 
-    async def info(self):
-        return NotImplemented
+    async def info(self) -> None:
+        raise NotImplementedError
 
 
 @dataclass(frozen=True)
@@ -609,7 +609,7 @@ def update_attributes(self, new_attributes: dict[str, JSON]) -> Array:
     def __repr__(self) -> str:
         return f"<Array {self.store_path} shape={self.shape} dtype={self.dtype}>"
 
-    def info(self):
+    def info(self) -> None:
         return sync(
             self._async_array.info(),
         )

src/zarr/metadata.py

@@ -261,7 +261,8 @@ def _json_convert(o: np.dtype[Any] | Enum | Codec) -> str | dict[str, Any]:
             # this serializes numcodecs compressors
             # todo: implement to_dict for codecs
             elif isinstance(o, numcodecs.abc.Codec):
-                return o.get_config()
+                config: dict[str, Any] = o.get_config()
+                return config
             raise TypeError
 
         return {
@@ -270,14 +271,14 @@ def _json_convert(o: np.dtype[Any] | Enum | Codec) -> str | dict[str, Any]:
 
     @classmethod
     def from_dict(cls, data: dict[str, JSON]) -> ArrayV3Metadata:
+        # TODO: Remove the type: ignores[] comments below and use a TypedDict to type `data`
         # check that the zarr_format attribute is correct
-        _ = parse_zarr_format_v3(data.pop("zarr_format"))
+        _ = parse_zarr_format_v3(data.pop("zarr_format"))  # type: ignore[arg-type]
         # check that the node_type attribute is correct
-        _ = parse_node_type_array(data.pop("node_type"))
+        _ = parse_node_type_array(data.pop("node_type"))  # type: ignore[arg-type]
 
         data["dimension_names"] = data.pop("dimension_names", None)
 
-        # TODO: Remove the ignores and use a TypedDict to type `data`
         return cls(**data)  # type: ignore[arg-type]
 
     def to_dict(self) -> dict[str, Any]:
@@ -450,32 +451,32 @@ def parse_attributes(data: None | dict[str, JSON]) -> dict[str, JSON]:
 # todo: move to its own module and drop _v3 suffix
 # todo: consider folding all the literal parsing into a single function
 # that takes 2 arguments
-def parse_zarr_format_v3(data: Any) -> Literal[3]:
+def parse_zarr_format_v3(data: Literal[3]) -> Literal[3]:
     if data == 3:
         return data
     raise ValueError(f"Invalid value. Expected 3. Got {data}.")
 
 
 # todo: move to its own module and drop _v2 suffix
-def parse_zarr_format_v2(data: Any) -> Literal[2]:
+def parse_zarr_format_v2(data: Literal[2]) -> Literal[2]:
     if data == 2:
         return data
     raise ValueError(f"Invalid value. Expected 2. Got {data}.")
 
 
-def parse_node_type_array(data: Any) -> Literal["array"]:
+def parse_node_type_array(data: Literal["array"]) -> Literal["array"]:
     if data == "array":
         return data
     raise ValueError(f"Invalid value. Expected 'array'. Got {data}.")
 
 
 # todo: real validation
-def parse_filters(data: Any) -> list[dict[str, JSON]]:
+def parse_filters(data: list[dict[str, JSON]] | None) -> list[dict[str, JSON]] | None:
     return data
 
 
 # todo: real validation
-def parse_compressor(data: Any) -> dict[str, JSON] | None:
+def parse_compressor(data: dict[str, JSON] | None) -> dict[str, JSON] | None:
     return data
 
 

src/zarr/store/remote.py

@@ -62,7 +62,7 @@ async def get(
         path = _dereference_path(root, key)
 
         try:
-            value = await (
+            value: Buffer | None = await (
                 fs._cat_file(path, start=byte_range[0], end=byte_range[1])
                 if byte_range
                 else fs._cat_file(path)
@@ -96,4 +96,5 @@ async def delete(self, key: str) -> None:
     async def exists(self, key: str) -> bool:
         fs, root = self._make_fs()
         path = _dereference_path(root, key)
-        return await fs._exists(path)
+        exists: bool = await fs._exists(path)
+        return exists