add read me

venv/lib/python3.12/site-packages/scipy/optimize/_trlib/__init__.py

@@ -0,0 +1,12 @@
+from ._trlib import TRLIBQuadraticSubproblem
+
+__all__ = ['TRLIBQuadraticSubproblem', 'get_trlib_quadratic_subproblem']
+
+
+def get_trlib_quadratic_subproblem(tol_rel_i=-2.0, tol_rel_b=-3.0, disp=False):
+    def subproblem_factory(x, fun, jac, hess, hessp):
+        return TRLIBQuadraticSubproblem(x, fun, jac, hess, hessp,
+                                        tol_rel_i=tol_rel_i,
+                                        tol_rel_b=tol_rel_b,
+                                        disp=disp)
+    return subproblem_factory