Fix: mypy error with Settings and SettingsConfigDict

pydantic/mypy.py

@@ -800,17 +800,17 @@ def add_initializer(self, fields: list[PydanticModelField], config: ModelConfigD
                 is_settings=is_settings,
             )
             if is_settings:
-                base_settings_info = self._api.lookup_fully_qualified(BASESETTINGS_FULLNAME).node.defn.info
-                base_settings_init_arguments = base_settings_info.names['__init__'].node.arguments
-                settings_init_arguments = []
-                a: Argument
-                for a in base_settings_init_arguments:
-                    if a.variable.name.startswith('__') or not a.variable.name.startswith('_'):
-                        continue
-                    analyzed_variable_type = self._api.anal_type(a.variable.type)
-                    variable = Var(a.variable.name, analyzed_variable_type)
-                    settings_init_arguments.append(Argument(variable, analyzed_variable_type, None, ARG_OPT))
-                args.extend(settings_init_arguments)
+                base_settings_node = self._api.lookup_fully_qualified(BASESETTINGS_FULLNAME).node
+                if '__init__' in base_settings_node.names:
+                    base_settings_init_node = base_settings_node.names['__init__'].node
+                    if base_settings_init_node is not None and base_settings_init_node.type is not None:
+                        func_type = base_settings_init_node.type
+                        for arg_idx, arg_name in enumerate(func_type.arg_names):
+                            if arg_name.startswith('__') or not arg_name.startswith('_'):
+                                continue
+                            analyzed_variable_type = self._api.anal_type(func_type.arg_types[arg_idx])
+                            variable = Var(arg_name, analyzed_variable_type)
+                            args.append(Argument(variable, analyzed_variable_type, None, ARG_OPT))
 
         if not self.should_init_forbid_extra(fields, config):
             var = Var('kwargs')

tests/mypy/modules/pydantic_settings.py

@@ -1,4 +1,4 @@
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -10,3 +10,12 @@ class Settings(BaseSettings):
 s = Settings(foo='test', _case_sensitive=True, _env_prefix='test__', _env_file='test')
 
 s = Settings(foo='test', _case_sensitive=1, _env_prefix=2, _env_file=3)
+
+
+class SettingsWithConfigDict(BaseSettings):
+    bar: str
+
+    model_config = SettingsConfigDict(env_file='.env', env_file_encoding='utf-8')
+
+
+scd = SettingsWithConfigDict()

tests/mypy/outputs/1.0.1/mypy-default_ini/pydantic_settings.py

@@ -1,4 +1,4 @@
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -13,3 +13,12 @@ class Settings(BaseSettings):
 # MYPY: error: Argument "_case_sensitive" to "Settings" has incompatible type "int"; expected "Optional[bool]"  [arg-type]
 # MYPY: error: Argument "_env_prefix" to "Settings" has incompatible type "int"; expected "Optional[str]"  [arg-type]
 # MYPY: error: Argument "_env_file" to "Settings" has incompatible type "int"; expected "Optional[Union[Path, str, List[Union[Path, str]], Tuple[Union[Path, str], ...]]]"  [arg-type]
+
+
+class SettingsWithConfigDict(BaseSettings):
+    bar: str
+
+    model_config = SettingsConfigDict(env_file='.env', env_file_encoding='utf-8')
+
+
+scd = SettingsWithConfigDict()

tests/mypy/outputs/1.0.1/mypy-plugin_ini/pydantic_settings.py

@@ -1,4 +1,4 @@
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -13,3 +13,12 @@ class Settings(BaseSettings):
 # MYPY: error: Argument "_case_sensitive" to "Settings" has incompatible type "int"; expected "Optional[bool]"  [arg-type]
 # MYPY: error: Argument "_env_prefix" to "Settings" has incompatible type "int"; expected "Optional[str]"  [arg-type]
 # MYPY: error: Argument "_env_file" to "Settings" has incompatible type "int"; expected "Optional[Union[Path, str, List[Union[Path, str]], Tuple[Union[Path, str], ...]]]"  [arg-type]
+
+
+class SettingsWithConfigDict(BaseSettings):
+    bar: str
+
+    model_config = SettingsConfigDict(env_file='.env', env_file_encoding='utf-8')
+
+
+scd = SettingsWithConfigDict()

tests/mypy/outputs/1.0.1/pyproject-default_toml/pydantic_settings.py

@@ -1,4 +1,4 @@
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -13,3 +13,12 @@ class Settings(BaseSettings):
 # MYPY: error: Argument "_case_sensitive" to "Settings" has incompatible type "int"; expected "Optional[bool]"  [arg-type]
 # MYPY: error: Argument "_env_prefix" to "Settings" has incompatible type "int"; expected "Optional[str]"  [arg-type]
 # MYPY: error: Argument "_env_file" to "Settings" has incompatible type "int"; expected "Optional[Union[Path, str, List[Union[Path, str]], Tuple[Union[Path, str], ...]]]"  [arg-type]
+
+
+class SettingsWithConfigDict(BaseSettings):
+    bar: str
+
+    model_config = SettingsConfigDict(env_file='.env', env_file_encoding='utf-8')
+
+
+scd = SettingsWithConfigDict()

tests/mypy/outputs/1.0.1/pyproject-plugin_toml/pydantic_settings.py

@@ -1,4 +1,4 @@
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -13,3 +13,12 @@ class Settings(BaseSettings):
 # MYPY: error: Argument "_case_sensitive" to "Settings" has incompatible type "int"; expected "Optional[bool]"  [arg-type]
 # MYPY: error: Argument "_env_prefix" to "Settings" has incompatible type "int"; expected "Optional[str]"  [arg-type]
 # MYPY: error: Argument "_env_file" to "Settings" has incompatible type "int"; expected "Optional[Union[Path, str, List[Union[Path, str]], Tuple[Union[Path, str], ...]]]"  [arg-type]
+
+
+class SettingsWithConfigDict(BaseSettings):
+    bar: str
+
+    model_config = SettingsConfigDict(env_file='.env', env_file_encoding='utf-8')
+
+
+scd = SettingsWithConfigDict()

tests/mypy/outputs/1.1.1/mypy-default_ini/pydantic_settings.py

@@ -1,4 +1,4 @@
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -17,3 +17,13 @@ class Settings(BaseSettings):
 # MYPY: error: Unexpected keyword argument "_case_sensitive" for "Settings"  [call-arg]
 # MYPY: error: Unexpected keyword argument "_env_prefix" for "Settings"  [call-arg]
 # MYPY: error: Unexpected keyword argument "_env_file" for "Settings"  [call-arg]
+
+
+class SettingsWithConfigDict(BaseSettings):
+    bar: str
+
+    model_config = SettingsConfigDict(env_file='.env', env_file_encoding='utf-8')
+
+
+scd = SettingsWithConfigDict()
+# MYPY: error: Missing named argument "bar" for "SettingsWithConfigDict"  [call-arg]

tests/mypy/outputs/1.1.1/pyproject-default_toml/pydantic_settings.py

@@ -1,4 +1,4 @@
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -17,3 +17,13 @@ class Settings(BaseSettings):
 # MYPY: error: Unexpected keyword argument "_case_sensitive" for "Settings"  [call-arg]
 # MYPY: error: Unexpected keyword argument "_env_prefix" for "Settings"  [call-arg]
 # MYPY: error: Unexpected keyword argument "_env_file" for "Settings"  [call-arg]
+
+
+class SettingsWithConfigDict(BaseSettings):
+    bar: str
+
+    model_config = SettingsConfigDict(env_file='.env', env_file_encoding='utf-8')
+
+
+scd = SettingsWithConfigDict()
+# MYPY: error: Missing named argument "bar" for "SettingsWithConfigDict"  [call-arg]

tests/mypy/outputs/1.4.1/mypy-plugin_ini/pydantic_settings.py

@@ -1,4 +1,4 @@
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -13,3 +13,12 @@ class Settings(BaseSettings):
 # MYPY: error: Argument "_case_sensitive" to "Settings" has incompatible type "int"; expected "bool | None"  [arg-type]
 # MYPY: error: Argument "_env_prefix" to "Settings" has incompatible type "int"; expected "str | None"  [arg-type]
 # MYPY: error: Argument "_env_file" to "Settings" has incompatible type "int"; expected "Path | str | list[Path | str] | tuple[Path | str, ...] | None"  [arg-type]
+
+
+class SettingsWithConfigDict(BaseSettings):
+    bar: str
+
+    model_config = SettingsConfigDict(env_file='.env', env_file_encoding='utf-8')
+
+
+scd = SettingsWithConfigDict()

tests/mypy/outputs/1.4.1/pyproject-plugin_toml/pydantic_settings.py

@@ -1,4 +1,4 @@
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -13,3 +13,12 @@ class Settings(BaseSettings):
 # MYPY: error: Argument "_case_sensitive" to "Settings" has incompatible type "int"; expected "bool | None"  [arg-type]
 # MYPY: error: Argument "_env_prefix" to "Settings" has incompatible type "int"; expected "str | None"  [arg-type]
 # MYPY: error: Argument "_env_file" to "Settings" has incompatible type "int"; expected "Path | str | list[Path | str] | tuple[Path | str, ...] | None"  [arg-type]
+
+
+class SettingsWithConfigDict(BaseSettings):
+    bar: str
+
+    model_config = SettingsConfigDict(env_file='.env', env_file_encoding='utf-8')
+
+
+scd = SettingsWithConfigDict()