👽️ constants: fix new stubtest errors (#330)

.mypyignore-todo

@@ -27,10 +27,6 @@ scipy\._lib\._util\.(Generator|Seed)Type
 scipy\.cluster\.hierarchy\.ClusterNode\.__init__
 scipy\.cluster\.vq\.kmeans2?
 
-scipy\.constants\._codata\.exact_values
-scipy\.constants\._codata\.(epsilon|mu)0
-scipy\.constants\._codata\.parse_constants_(2002to2014|2018toXXXX)
-
 scipy\.fft\._basic_backend\.complex_funcs
 
 scipy\.fftpack\.(_pseudo_diffs\.)?diff

scipy-stubs/constants/_codata.pyi

@@ -87,30 +87,18 @@ _Unit: TypeAlias = Literal[
 _Constant: TypeAlias = tuple[float, _Unit, float]
 _Constants: TypeAlias = Mapping[str, _Constant]
 
+# private
+
+c: Final = 299792458.0
+k: Final = "electric constant"
+
 # public
 
-physical_constants: Final[_Constants]
+physical_constants: Final[_Constants] = ...
 
 class ConstantWarning(DeprecationWarning): ...
 
 def find(sub: str | None = ..., disp: bool = ...) -> list[LiteralString] | None: ...
 def value(key: str) -> float: ...
 def unit(key: str) -> _Unit: ...
 def precision(key: str) -> float: ...
-
-# private
-
-txt2002: Final[str] = ...
-txt2006: Final[str] = ...
-txt2010: Final[str] = ...
-txt2014: Final[str] = ...
-txt2018: Final[str] = ...
-
-exact_values: Final[_Constants] = ...
-c: Final = 299792458.0
-mu0: Final = 1.25663706212e-06
-epsilon0: Final = 8.8541878128e-12
-k: Final = "electric constant"
-
-def parse_constants_2002to2014(d: str) -> _Constants: ...
-def parse_constants_2018toXXXX(d: str) -> _Constants: ...