trying to fix CI tests

pyproject.toml

@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools", "Cython", "numpy"]
+requires = ["setuptools", "Cython>3", "numpy"]
 build-backend = "setuptools.build_meta"

tests/edges/test_arc3d.py

@@ -1,4 +1,5 @@
 import math
+import os
 import unittest
 from itertools import product
 
@@ -8,6 +9,9 @@
 from volmdlr.models.curves import circle3d
 
 
+folder = os.path.join(os.path.dirname(os.path.realpath(__file__)), "arc_objects")
+
+
 class TestArc3D(unittest.TestCase):
     list_points = circle3d.discretization_points(number_points=8)
     arc3d = edges.Arc3D(circle3d, start=volmdlr.Point3D(0.5773502691896258, 0.5773502691896258, 0.5773502691896258),
@@ -82,7 +86,7 @@ def test_abscissa(self):
         for abscissa, expected_abscissa in zip(abscissas, expected_abscissa):
             self.assertAlmostEqual(abscissa, expected_abscissa)
 
-        arc = edges.Arc3D.load_from_file("edges/arc_objects/arc_abscissa_bug.json")
+        arc = edges.Arc3D.load_from_file(os.path.join(folder, "arc_abscissa_bug.json"))
         point = volmdlr.Point3D(0.6002208894332702, -0.637646466964, 0.006570128575852758)
         abscissa = arc.abscissa(point)
         self.assertAlmostEqual(abscissa, 0.019320794819579237)
@@ -252,7 +256,7 @@ def test_point_distance(self):
         self.assertEqual(arc.point_distance(point4), math.sqrt(2))
 
         point = volmdlr.Point3D(0.33525, -0.51106, 0.639935)
-        arc = dessia_common.core.DessiaObject.load_from_file('edges/arc_objects/arc3d_test_point_distance.json')
+        arc = dessia_common.core.DessiaObject.load_from_file(os.path.join(folder, "arc3d_test_point_distance.json"))
         self.assertAlmostEqual(arc.point_distance(point), 0.0021097842575404403)
 
     def test_arc_intersections(self):

volmdlr/core_compiled.pyx

@@ -928,6 +928,22 @@ cdef class Point2D(Vector2D):
         self.y = y
         self.name = name
 
+    def __setitem__(self, key, item):
+        if key == 0:
+            self.x = item
+        elif key == 1:
+            self.y = item
+        else:
+            raise IndexError
+
+    def __getitem__(self, key):
+        if key == 0:
+            return self.x
+        elif key == 1:
+            return self.y
+        else:
+            raise IndexError
+
     def __add__(self, other_vector):
         return Point2D(*c_add_2d(self.x, self.y, other_vector.x, other_vector.y))
 
@@ -1839,6 +1855,26 @@ cdef class Point3D(Vector3D):
         self.z = z
         self.name = name
 
+    def __setitem__(self, key, item):
+        if key == 0:
+            self.x = item
+        elif key == 1:
+            self.y = item
+        elif key == 2:
+            self.z = item
+        else:
+            raise IndexError
+
+    def __getitem__(self, key):
+        if key == 0:
+            return self.x
+        elif key == 1:
+            return self.y
+        elif key == 2:
+            return self.z
+        else:
+            raise IndexError
+
     def __add__(self, other_vector):
         return Point3D(*c_add_3d(self.x, self.y, self.z, other_vector.x, other_vector.y, other_vector.z))