let _evaluate as the base method

Author: Zeroto521

src/pyscipopt/expr.pxi

@@ -304,6 +304,11 @@ cdef class ExprLike:
     def cos(self, /) -> CosExpr:
         return CosExpr(Operator.cos, buildGenExprObj(self))
 
+    cpdef double _evaluate(self, Solution sol) except *:
+        raise NotImplementedError(
+            f"{self.__class__.__name__!s} need to implement _evaluate() method"
+        )
+
     cdef ExprLike copy(self, bint copy=True):
         raise NotImplementedError(
             f"{self.__class__.__name__!s} need to implement copy() method"

src/pyscipopt/scip.pxd

@@ -2152,13 +2152,12 @@ cdef extern from "tpi/tpi.h":
 
 cdef class ExprLike:
 
+    cpdef double _evaluate(self, Solution sol)
     cdef ExprLike copy(self, bint copy=*)
 
 cdef class Expr(ExprLike):
     cdef public terms
 
-    cpdef double _evaluate(self, Solution sol)
-
 cdef class Event:
     cdef SCIP_EVENT* event
     # can be used to store problem data

src/pyscipopt/scip.pyi

@@ -526,7 +526,7 @@ class MatrixConstraint(np.ndarray):
     def isStickingAtNode(self) -> Incomplete: ...
 
 class MatrixExpr(np.ndarray):
-    def _evaluate(self, sol: Incomplete) -> Incomplete: ...
+    def _evaluate(self, sol: Solution) -> Incomplete: ...
     def __array_ufunc__(
         self,
         ufunc: np.ufunc,