Merge pull request #151 from alliander-opensource/feature/version-3.7

support for 3.7

Author: petersalemink95

pyproject.toml

@@ -33,7 +33,7 @@ classifiers = [
     "Operating System :: MacOS",
     "Topic :: Scientific/Engineering :: Physics",
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.7"
 dependencies = [
     "numpy>=1.21.0",
 ]

src/power_grid_model/validation/rules.py

@@ -35,7 +35,7 @@
 
 """
 from enum import Enum
-from typing import Any, Dict, List, Protocol, Tuple, Type, TypeVar, Union
+from typing import Any, Callable, Dict, List, Tuple, Type, TypeVar, Union
 
 import numpy as np
 
@@ -68,15 +68,6 @@
 CompError = TypeVar("CompError", bound=ComparisonError)
 
 
-class ComparisonFn(Protocol):  # pylint: disable=too-few-public-methods
-    """
-    A protocol defining a function on one or more numpy arrays, resulting in a single numpy array.
-    """
-
-    def __call__(self, val: np.ndarray, *ref: np.ndarray) -> np.ndarray:
-        ...
-
-
 def all_greater_than_zero(data: SingleDataset, component: str, field: str) -> List[NotGreaterThanError]:
     """
     Check that for all records of a particular type of component, the values in the 'field' column are greater than
@@ -291,7 +282,7 @@ def none_match_comparison(
     data: SingleDataset,
     component: str,
     field: str,
-    compare_fn: ComparisonFn,
+    compare_fn: Callable,
     ref_value: ComparisonError.RefType,
     error: Type[CompError] = ComparisonError,  # type: ignore
 ) -> List[CompError]: