feat: allow specifying required fields

README.md

@@ -64,6 +64,12 @@ There is also possible to specify a limited list of fields to be partial:
 UserPartialUpdateSchema = create_partial_model(UserSchema, 'name', 'nickname')
 ```
 
+Or to make all fields partial except for the specified ones:
+
+```python
+UserPartialCreateSchema = create_partial_model(UserSchema, required_fields=['age'])
+```
+
 ## Known limitations
 
 #### MyPy: "is not valid as a type" error

pydantic_strict_partial/__init__.py

@@ -13,18 +13,24 @@
 def create_partial_model(
     model: type[T],
     *optional_fields: str,
+    required_fields: list[str] | None = None,
     default_value: Any = None,  # noqa: ANN401
 ) -> type[T]:
     """Create a partial model from the given model class.
 
     :param model: The model class to create a partial model from.
     :param optional_fields: The fields to make optional.
         If None, all fields will be made optional.
+    :param required_fields: The fields to make required.
+        If None, no fields will be made required.
     :param default_value: The default value to use for optional fields.
     :return: The partial model class.
     """
     fields = {}
     for field in optional_fields or model.model_fields.keys():
+        if required_fields and field in required_fields:
+            continue
+
         field_info = model.model_fields[field]
 
         fields[field] = (

tests.py

@@ -114,3 +114,19 @@ class Model(BaseModel):
 
     with pytest.raises(ValidationError):
         model_partial_class(required="value")
+
+
+def test_make_some_fields_required() -> None:
+    class Model(BaseModel):
+        required: str
+        required2: str
+
+    model_partial_class = create_partial_model(
+        Model,
+        required_fields=["required"],
+    )
+
+    model_partial_class(required="value")
+
+    with pytest.raises(ValidationError):
+        model_partial_class(required2="value")