Rename frequenz.sdk.{_formula_engine => formula_engine}

This makes the formula engine a public module, and allows the public
facing `FormulaEngine` and `FormulaEngine3Phase` types to be better
documented.

Signed-off-by: Sahas Subramanian <[email protected]>

Author: shsms

src/frequenz/sdk/timeseries/battery_pool/_battery_pool.py

@@ -17,8 +17,8 @@
 from ..._internal._channels import ReceiverFetcher
 from ...actor import _power_managing
 from ...timeseries import Energy, Percentage, Power, Sample, Temperature
-from .._formula_engine import FormulaEngine
-from .._formula_engine._formula_generators import (
+from ..formula_engine import FormulaEngine
+from ..formula_engine._formula_generators import (
     BatteryPowerFormula,
     FormulaGeneratorConfig,
     FormulaType,

src/frequenz/sdk/timeseries/battery_pool/_battery_pool_reference_store.py

@@ -17,7 +17,7 @@
 from ...actor.power_distributing._battery_pool_status import BatteryStatus
 from ...microgrid import connection_manager
 from ...microgrid.component import ComponentCategory
-from .._formula_engine import FormulaEnginePool
+from ..formula_engine import FormulaEnginePool
 from ._methods import MetricAggregator
 
 

src/frequenz/sdk/timeseries/ev_charger_pool/_ev_charger_pool.py

@@ -19,14 +19,14 @@
 from ...microgrid import connection_manager
 from ...microgrid.component import ComponentCategory, ComponentMetricId
 from .. import Sample, Sample3Phase
-from .._formula_engine import FormulaEngine, FormulaEngine3Phase, FormulaEnginePool
-from .._formula_engine._formula_generators import (
+from .._quantities import Current, Power, Quantity
+from ..formula_engine import FormulaEngine, FormulaEngine3Phase, FormulaEnginePool
+from ..formula_engine._formula_generators import (
     EVChargerCurrentFormula,
     EVChargerPowerFormula,
     FormulaGeneratorConfig,
     FormulaType,
 )
-from .._quantities import Current, Power, Quantity
 from ._set_current_bounds import BoundsSetter, ComponentCurrentLimit
 from ._state_tracker import EVChargerState, StateTracker
 

…k/timeseries/_formula_engine/__init__.py …dk/timeseries/formula_engine/__init__.pysrc/frequenz/sdk/timeseries/_formula_engine/__init__.py renamed to src/frequenz/sdk/timeseries/formula_engine/__init__.py src/frequenz/sdk/timeseries/_formula_engine/__init__.py renamed to src/frequenz/sdk/timeseries/formula_engine/__init__.py

@@ -2,6 +2,7 @@
 # Copyright © 2023 Frequenz Energy-as-a-Service GmbH
 
 """A formula engine for applying formulas."""
+
 from ._formula_engine import FormulaEngine, FormulaEngine3Phase
 from ._formula_engine_pool import FormulaEnginePool
 from ._resampled_formula_builder import ResampledFormulaBuilder

…imeseries/_formula_engine/_exceptions.py …timeseries/formula_engine/_exceptions.pysrc/frequenz/sdk/timeseries/_formula_engine/_exceptions.py renamed to src/frequenz/sdk/timeseries/formula_engine/_exceptions.py src/frequenz/sdk/timeseries/_formula_engine/_exceptions.py renamed to src/frequenz/sdk/timeseries/formula_engine/_exceptions.py

@@ -20,7 +20,7 @@
 
 if TYPE_CHECKING:
     # Break circular import by enclosing these type hints in a `TYPE_CHECKING` block.
-    from .._formula_engine import FormulaEngine, FormulaEngine3Phase
+    from ..formula_engine import FormulaEngine, FormulaEngine3Phase
 
 
 class FormulaEnginePool: