workaround for set validation

psdm/base.py

@@ -7,9 +7,12 @@
 import enum
 import json
 import pathlib
+import typing as t
 
 import pydantic
 
+T = t.TypeVar("T")
+
 
 class VoltageSystemType(enum.Enum):
     AC = "AC"
@@ -42,3 +45,7 @@ def to_json(self, file_path: str | pathlib.Path, indent: int = 2) -> None:
     @classmethod
     def from_json(cls, json_str: str) -> Base:
         return cls.model_validate_json(json_str)
+
+
+def validate_set(value: list[T]) -> list[T]:
+    return list(set(value))

psdm/steadystate_case/case.py

@@ -10,6 +10,7 @@
 from loguru import logger
 
 from psdm.base import Base
+from psdm.base import validate_set
 from psdm.meta import Meta
 from psdm.steadystate_case.external_grid import ExternalGrid
 from psdm.steadystate_case.load import Load
@@ -21,9 +22,21 @@
 
 class Case(Base):
     meta: Meta
-    loads: pydantic.conset(Load)  # type: ignore[valid-type]
-    transformers: pydantic.conset(Transformer)  # type: ignore[valid-type]
-    external_grids: pydantic.conset(ExternalGrid)  # type: ignore[valid-type]
+    loads: list[Load]
+    transformers: list[Transformer]
+    external_grids: list[ExternalGrid]
+
+    @pydantic.field_validator("loads")
+    def validate_loads(cls, value: list[Load]) -> list[Load]:
+        return validate_set(value)
+
+    @pydantic.field_validator("transformers")
+    def validate_transformers(cls, value: list[Transformer]) -> list[Transformer]:
+        return validate_set(value)
+
+    @pydantic.field_validator("external_grids")
+    def validate_external_grids(cls, value: list[ExternalGrid]) -> list[ExternalGrid]:
+        return validate_set(value)
 
     def is_valid_topology(self, topology: Topology) -> bool:
         logger.info("Verifying steadystate case ...")

psdm/topology/topology.py

@@ -7,6 +7,7 @@
 import pydantic
 
 from psdm.base import Base
+from psdm.base import validate_set
 from psdm.meta import Meta
 from psdm.topology.branch import Branch
 from psdm.topology.external_grid import ExternalGrid
@@ -17,8 +18,28 @@
 
 class Topology(Base):
     meta: Meta
-    branches: pydantic.conset(Branch)  # type: ignore[valid-type]
-    nodes: pydantic.conset(Node)  # type: ignore[valid-type]
-    loads: pydantic.conset(Load)  # type: ignore[valid-type]
-    transformers: pydantic.conset(Transformer)  # type: ignore[valid-type]
-    external_grids: pydantic.conset(ExternalGrid)  # type: ignore[valid-type]
+    branches: list[Branch]
+    nodes: list[Node]
+    loads: list[Load]
+    transformers: list[Transformer]
+    external_grids: list[ExternalGrid]
+
+    @pydantic.field_validator("branches")
+    def validate_branches(cls, value: list[Branch]) -> list[Branch]:
+        return validate_set(value)
+
+    @pydantic.field_validator("nodes")
+    def validate_nodes(cls, value: list[Node]) -> list[Node]:
+        return validate_set(value)
+
+    @pydantic.field_validator("loads")
+    def validate_loads(cls, value: list[Load]) -> list[Load]:
+        return validate_set(value)
+
+    @pydantic.field_validator("transformers")
+    def validate_transformers(cls, value: list[Transformer]) -> list[Transformer]:
+        return validate_set(value)
+
+    @pydantic.field_validator("external_grids")
+    def validate_external_grids(cls, value: list[ExternalGrid]) -> list[ExternalGrid]:
+        return validate_set(value)

psdm/topology/transformer.py

@@ -10,6 +10,7 @@
 import pydantic
 
 from psdm.base import Base
+from psdm.base import validate_set
 from psdm.topology.windings import Winding
 
 
@@ -72,7 +73,7 @@ class Transformer(Base):
     vector_group: VectorGroup  # specifier for connection of wiring e.g. DYn5
     i_0: float  # no-load current in %
     p_fe: float  # no-load losses (Iron losses)
-    windings: pydantic.conset(Winding)  # type: ignore[valid-type]  # winding object for each voltage level
+    windings: list[Winding]  # winding object for each voltage level
     phase_technology_type: TransformerPhaseTechnologyType | None = None  # three- or single-phase-transformer
     description: str | None = None
     tap_u_abs: float | None = None  # voltage deviation per tap position change in %
@@ -81,3 +82,7 @@ class Transformer(Base):
     tap_min: int | None = None  # lower position of tap for tap control
     tap_neutral: int | None = None  # initial position where rated transformation ratio is specified
     tap_side: TapSide | None = None  # transformer side of where tap changer is installed
+
+    @pydantic.field_validator("windings")
+    def validate_windings(cls, value: list[Winding]) -> list[Winding]:
+        return validate_set(value)

psdm/topology_case/case.py

@@ -7,10 +7,15 @@
 import pydantic
 
 from psdm.base import Base
+from psdm.base import validate_set
 from psdm.meta import Meta
 from psdm.topology_case.element_state import ElementState
 
 
 class Case(Base):
     meta: Meta
-    elements: pydantic.conset(ElementState)  # type: ignore[valid-type]
+    elements: list[ElementState]
+
+    @pydantic.field_validator("elements")
+    def validate_elements(cls, value: list[ElementState]) -> list[ElementState]:
+        return validate_set(value)