Work around circular dependency in opentrons.config.types.

api/src/opentrons/config/types.py

@@ -1,8 +1,11 @@
 from enum import Enum
 from dataclasses import dataclass, asdict, fields
-from typing import Dict, Tuple, TypeVar, Generic, List, cast, Optional
+from typing import Dict, Tuple, TypeVar, Generic, List, cast, Optional, TYPE_CHECKING
 from typing_extensions import TypedDict, Literal
-from opentrons.hardware_control.types import OT3AxisKind, InstrumentProbeType
+
+if TYPE_CHECKING:
+    # Work around circular import.
+    from opentrons.hardware_control.types import OT3AxisKind, InstrumentProbeType
 
 
 class AxisDict(TypedDict):
@@ -31,7 +34,7 @@ def __getitem__(self, key: GantryLoad) -> Vt:
         return cast(Vt, asdict(self)[key.value])
 
 
-PerPipetteAxisSettings = ByGantryLoad[Dict[OT3AxisKind, float]]
+PerPipetteAxisSettings = ByGantryLoad[Dict["OT3AxisKind", float]]
 
 
 class CurrentDictDefault(TypedDict):
@@ -82,7 +85,7 @@ class OT3MotionSettings:
 
     def by_gantry_load(
         self, gantry_load: GantryLoad
-    ) -> Dict[str, Dict[OT3AxisKind, float]]:
+    ) -> Dict[str, Dict["OT3AxisKind", float]]:
         return dict(
             (field.name, getattr(self, field.name)[gantry_load])
             for field in fields(self)
@@ -96,7 +99,7 @@ class OT3CurrentSettings:
 
     def by_gantry_load(
         self, gantry_load: GantryLoad
-    ) -> Dict[str, Dict[OT3AxisKind, float]]:
+    ) -> Dict[str, Dict["OT3AxisKind", float]]:
         return dict(
             (field.name, getattr(self, field.name)[gantry_load])
             for field in fields(self)
@@ -139,7 +142,7 @@ class LiquidProbeSettings:
     aspirate_while_sensing: bool
     auto_zero_sensor: bool
     num_baseline_reads: int
-    data_files: Optional[Dict[InstrumentProbeType, str]]
+    data_files: Optional[Dict["InstrumentProbeType", str]]
 
 
 @dataclass(frozen=True)