fix merge property in rare cases

Signed-off-by: Zhiyuan Chen <[email protected]>

.pre-commit-config.yaml

@@ -2,12 +2,12 @@ default_language_version:
   python: python3
 repos:
   - repo: https://github.com/PSF/black
-    rev: 23.11.0
+    rev: 23.12.1
     hooks:
       - id: black
         args: [--safe, --quiet]
   - repo: https://github.com/PyCQA/isort
-    rev: 5.12.0
+    rev: 5.13.2
     hooks:
       - id: isort
         name: isort
@@ -25,11 +25,11 @@ repos:
       - id: pyupgrade
         args: [--keep-runtime-typing]
   - repo: https://github.com/tox-dev/pyproject-fmt
-    rev: 1.5.1
+    rev: 1.5.3
     hooks:
       - id: pyproject-fmt
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.7.0
+    rev: v1.8.0
     hooks:
       - id: mypy
         files: chanfig
@@ -41,7 +41,7 @@ repos:
       - id: codespell
         args: [--ignore-words=.codespell-whitelist.txt]
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v3.1.0
+    rev: v4.0.0-alpha.8
     hooks:
       - id: prettier
         files: chanfig

chanfig/config.py

@@ -20,10 +20,7 @@
 from functools import wraps
 from typing import Any
 
-try:
-    from typing import Self
-except ImportError:
-    from typing_extensions import Self
+from typing_extensions import Self
 
 from .nested_dict import NestedDict
 from .parser import ConfigParser

chanfig/flat_dict.py

@@ -28,11 +28,7 @@
 from typing import IO, Any
 from warnings import warn
 
-try:
-    from typing import Self
-except ImportError:
-    from typing_extensions import Self
-
+from typing_extensions import Self
 from yaml import dump as yaml_dump
 from yaml import load as yaml_load
 
@@ -379,7 +375,7 @@ def getattr(self, name: str, default: Any = Null) -> Any:
                 return self.__dict__[name]
             if name in self.__class__.__dict__:
                 return self.__class__.__dict__[name]
-            return super().getattr(name, default)  # type: ignore
+            return super().getattr(name, default)  # type: ignore[misc]
         except AttributeError:
             if default is not Null:
                 return default
@@ -466,7 +462,7 @@ def hasattr(self, name: str) -> bool:
         try:
             if name in self.__dict__ or name in self.__class__.__dict__:
                 return True
-            return super().hasattr(name)  # type: ignore
+            return super().hasattr(name)  # type: ignore[misc]
         except AttributeError:
             return False
 
@@ -519,7 +515,7 @@ def from_dict(cls, obj: Mapping | Sequence) -> Any:  # pylint: disable=R0911
         if obj is None:
             return cls()
         if issubclass(cls, FlatDict):
-            cls = cls.empty  # type: ignore  # pylint: disable=W0642
+            cls = cls.empty  # type: ignore[assignment] # pylint: disable=W0642
         if isinstance(obj, Mapping):
             return cls(obj)
         if isinstance(obj, Sequence):
@@ -710,7 +706,7 @@ def merge(self, *args: Any, overwrite: bool = True, **kwargs: Any) -> Self:
         if len(args) == 1:
             args = args[0]
             if isinstance(args, (PathLike, str, bytes)):
-                args = self.load(args)  # type: ignore
+                args = self.load(args)  # type: ignore[assignment]
                 warn(
                     "merge file is deprecated and maybe removed in a future release. Use `merge_from_file` instead.",
                     PendingDeprecationWarning,
@@ -850,7 +846,7 @@ def difference(self, other: Mapping | Iterable | PathStr) -> Self:
         if not isinstance(other, Iterable):
             raise TypeError(f"`other={other}` should be of type Mapping, Iterable or PathStr, but got {type(other)}.")
         return self.empty(
-            **{key: value for key, value in other if key not in self or self[key] != value}  # type: ignore
+            **{key: value for key, value in other if key not in self or self[key] != value}  # type: ignore[misc]
         )
 
     def diff(self, other: Mapping | Iterable | PathStr, *args: Any, **kwargs: Any) -> Self:
@@ -1029,7 +1025,7 @@ def clone(self, memo: Mapping | None = None) -> Self:
         return self.deepcopy(memo=memo)
 
     def save(  # pylint: disable=W1113
-        self, file: File, method: str = None, *args: Any, **kwargs: Any  # type: ignore
+        self, file: File, method: str = None, *args: Any, **kwargs: Any  # type: ignore[assignment]
     ) -> None:
         r"""
         Save `FlatDict` to file.
@@ -1060,13 +1056,13 @@ def save(  # pylint: disable=W1113
             method = splitext(file)[-1][1:]
         extension = method.lower()
         if extension in YAML:
-            return self.yaml(file=file, *args, **kwargs)  # type: ignore
+            return self.yaml(file=file, *args, **kwargs)  # type: ignore[misc]  # noqa: B026
         if extension in JSON:
-            return self.json(file=file, *args, **kwargs)  # type: ignore
+            return self.json(file=file, *args, **kwargs)  # type: ignore[misc]  # noqa: B026
         raise TypeError(f"`file={file!r}` should be in {JSON} or {YAML}, but got {extension}.")
 
     def dump(  # pylint: disable=W1113
-        self, file: File, method: str = None, *args: Any, **kwargs: Any  # type: ignore
+        self, file: File, method: str = None, *args: Any, **kwargs: Any  # type: ignore[assignment]
     ) -> None:
         r"""
         Alias of [`save`][chanfig.FlatDict.save].
@@ -1075,7 +1071,7 @@ def dump(  # pylint: disable=W1113
 
     @classmethod
     def load(  # pylint: disable=W1113
-        cls, file: File, method: str = None, *args: Any, **kwargs: Any  # type: ignore
+        cls, file: File, method: str = None, *args: Any, **kwargs: Any  # type: ignore[assignment]
     ) -> Self:
         """
         Load `FlatDict` from file.
@@ -1149,7 +1145,7 @@ def from_json(cls, file: File, *args: Any, **kwargs: Any) -> Self:
 
         with cls.open(file) as fp:  # pylint: disable=C0103
             if isinstance(file, (IOBase, IO)):
-                return cls.from_jsons(fp.getvalue(), *args, **kwargs)  # type: ignore
+                return cls.from_jsons(fp.getvalue(), *args, **kwargs)  # type: ignore[union-attr]
             return cls.from_jsons(fp.read(), *args, **kwargs)
 
     def jsons(self, *args: Any, **kwargs: Any) -> str:
@@ -1222,7 +1218,7 @@ def from_yaml(cls, file: File, *args: Any, **kwargs: Any) -> Self:
         kwargs.setdefault("Loader", YamlLoader)
         with cls.open(file) as fp:  # pylint: disable=C0103
             if isinstance(file, (IOBase, IO)):
-                return cls.from_yamls(fp.getvalue(), *args, **kwargs)  # type: ignore
+                return cls.from_yamls(fp.getvalue(), *args, **kwargs)  # type: ignore[union-attr]
             return cls.from_dict(yaml_load(fp, *args, **kwargs))
 
     def yamls(self, *args: Any, **kwargs: Any) -> str:
@@ -1304,11 +1300,11 @@ def open(file: File, *args: Any, encoding: str = "utf-8", **kwargs: Any) -> Gene
             yield file
         elif isinstance(file, (PathLike, str, bytes)):
             try:
-                file = open(file, *args, encoding=encoding, **kwargs)  # type: ignore  # noqa: SIM115
-                yield file  # type: ignore
+                file = open(file, *args, encoding=encoding, **kwargs)  # type: ignore[call-overload] # noqa: SIM115
+                yield file  # type: ignore[misc]
             finally:
                 with suppress(Exception):
-                    file.close()  # type: ignore
+                    file.close()  # type: ignore[union-attr]
         else:
             raise TypeError(f"expected str, bytes, os.PathLike, IO or IOBase, not {type(file).__name__}")
 

chanfig/functional.py

@@ -28,7 +28,7 @@
 
 
 def save(  # pylint: disable=W1113
-    obj, file: File, method: str = None, *args: Any, **kwargs: Any  # type: ignore
+    obj, file: File, method: str = None, *args: Any, **kwargs: Any  # type: ignore[assignment]
 ) -> None:
     r"""
     Save `FlatDict` to file.
@@ -62,7 +62,7 @@ def save(  # pylint: disable=W1113
     if method is None:
         if isinstance(file, IOBase):
             raise ValueError("`method` must be specified when saving to IO.")
-        method = splitext(file)[-1][1:]  # type: ignore
+        method = splitext(file)[-1][1:]
     extension = method.lower()
     if extension in YAML:
         with FlatDict.open(file, mode="w") as fp:  # pylint: disable=C0103

chanfig/nested_dict.py

@@ -22,18 +22,15 @@
 from os import PathLike
 from typing import Any
 
+from typing_extensions import Self
+
 try:
     from functools import cached_property  # pylint: disable=C0412
 except ImportError:
     try:
-        from backports.cached_property import cached_property  # type: ignore
+        from backports.cached_property import cached_property  # type: ignore[no-redef]
     except ImportError:
-        cached_property = property  # type: ignore  # pylint: disable=C0103
-
-try:
-    from typing import Self
-except ImportError:
-    from typing_extensions import Self
+        cached_property = property  # type: ignore[misc, assignment] # pylint: disable=C0103
 
 from .default_dict import DefaultDict
 from .flat_dict import FlatDict
@@ -698,8 +695,7 @@ def _merge(this: FlatDict, that: Iterable, overwrite: bool = True) -> Mapping:
             return this
         if isinstance(that, Mapping):
             that = that.items()
-        context = this.converting() if isinstance(this, NestedDict) else nullcontext()
-        with context:
+        with this.converting() if isinstance(this, NestedDict) else nullcontext():
             for key, value in that:
                 if key in this and isinstance(this[key], Mapping):
                     if isinstance(value, Mapping):
@@ -709,8 +705,11 @@ def _merge(this: FlatDict, that: Iterable, overwrite: bool = True) -> Mapping:
                             this.set(key, value)
                         else:
                             this[key] = value
-                elif key in dir(this) and isinstance(getattr(this.__class__, key), (property, cached_property)):
-                    getattr(this, key).merge(value, overwrite=overwrite)
+                elif key in dir(this) and isinstance(getattr(this.__class__, key, None), (property, cached_property)):
+                    if isinstance(getattr(this, key, None), FlatDict):
+                        getattr(this, key).merge(value, overwrite=overwrite)
+                    else:
+                        setattr(this, key, value)
                 elif overwrite or key not in this:
                     if isinstance(this, NestedDict):
                         this.set(key, value)

chanfig/registry.py

@@ -247,8 +247,8 @@ def build(self, name: str | Mapping, *args: Any, **kwargs: Any) -> Any:
 
         if isinstance(name, Mapping):
             name = deepcopy(name)
-            name, kwargs = name.pop("name"), dict(name, **kwargs)  # type: ignore
-        return self.init(self.lookup(name), *args, **kwargs)  # type: ignore
+            name, kwargs = name.pop("name"), dict(name, **kwargs)  # type: ignore[attr-defined, arg-type]
+        return self.init(self.lookup(name), *args, **kwargs)  # type: ignore[arg-type]
 
 
 GlobalRegistry = Registry()

chanfig/utils.py

@@ -25,20 +25,17 @@
 from re import compile, findall  # pylint: disable=W0622
 from types import GetSetDescriptorType, ModuleType
 from typing import IO, Any, Union, no_type_check
+from typing_extensions import get_args, get_origin
 
+import typing_extensions
 from yaml import SafeDumper, SafeLoader
 
-try:  # python 3.8+
-    import typing_extensions as typing
-except ImportError:
-    import typing  # type: ignore
-
 try:  # python 3.10+
     from types import UnionType  # pylint: disable=C0412
 except ImportError:
-    UnionType = Union  # type: ignore
+    UnionType = Union  # type: ignore[misc, assignment]
 
-GLOBAL_NS = {k: v for k, v in typing.__dict__.items() if not k.startswith("_")}
+GLOBAL_NS = {k: v for k, v in typing_extensions.__dict__.items() if not k.startswith("_")}
 PY310_PLUS = sys.version_info >= (3, 10)
 
 PathStr = Union[PathLike, str, bytes]
@@ -191,7 +188,7 @@ def get_annotations(  # pylint: disable=all
 
 @no_type_check
 def isvalid(data: Any, expected_type: type) -> bool:
-    expected_origin = typing.get_origin(expected_type)
+    expected_origin = get_origin(expected_type)
     if expected_origin not in (
         Callable,
         GetSetDescriptorType,
@@ -200,20 +197,20 @@ def isvalid(data: Any, expected_type: type) -> bool:
         None,
     ):
         if issubclass(expected_origin, Sequence):
-            inner_type = typing.get_args(expected_type)[0]
+            inner_type = get_args(expected_type)[0]
             return isinstance(data, expected_origin) and all(isinstance(item, inner_type) for item in data)
         if issubclass(expected_origin, Mapping):
-            key_type, value_type = typing.get_args(expected_type)
+            key_type, value_type = get_args(expected_type)
             return isinstance(data, expected_origin) and all(
                 isinstance(key, key_type) and isinstance(value, value_type) for key, value in data.items()
             )
         raise TypeError(f"Expected type {expected_type} is not supported.")
     if expected_origin is UnionType and not PY310_PLUS:
-        return any(isinstance(data, inner_type) for inner_type in typing.get_args(expected_type))
+        return any(isinstance(data, inner_type) for inner_type in get_args(expected_type))
     return isinstance(data, expected_type)
 
 
-class Dict(type(dict)):  # type: ignore
+class Dict(type(dict)):  # type: ignore[misc]
     def __call__(cls, *args: Any, **kwargs: Any) -> Any:
         instance = super().__call__(*args, **kwargs)
         instance.__post_init__()
@@ -230,7 +227,7 @@ class Singleton(type):
 
     def __call__(cls, *args: Any, **kwargs: Any):
         if cls not in cls.__instances__:
-            cls.__instances__[cls] = super().__call__(*args, **kwargs)  # type: ignore
+            cls.__instances__[cls] = super().__call__(*args, **kwargs)  # type: ignore[index]
         return cls.__instances__[cls]
 
 

chanfig/variable.py

@@ -118,7 +118,7 @@ def __init__(  # pylint: disable=R0913
         self._required = required
         self._help = help
 
-    @property  # type: ignore
+    @property  # type: ignore[misc]
     def __class__(self) -> type:
         return self.value.__class__ if self.wrap_type else type(self)
 

pyproject.toml

@@ -44,7 +44,7 @@ dynamic = [
 ]
 dependencies = [
   "pyyaml",
-  'typing-extensions; python_version < "3.8"',
+  "typing-extensions",
 ]
 [project.optional-dependencies]
 include = [

requirements.txt

@@ -1 +1,2 @@
 pyyaml
+typing-extensions