feat: adding __len__ to components (#3663)

* feat: adding __len__ to components

* chore: adding changelog file 3663.miscellaneous.md [dependabot-skip]

---------

Co-authored-by: pyansys-ci-bot <[email protected]>

Author: germa89

doc/changelog.d/3663.miscellaneous.md

@@ -0,0 +1 @@
+feat: adding __len__ to components

src/ansys/mapdl/core/component.py

@@ -471,6 +471,16 @@ def __iter__(self) -> Iterator:
         """
         yield from self._comp.keys()
 
+    def __len__(self) -> int:
+        """Return the number of components
+
+        Returns
+        -------
+        int
+            Number of components
+        """
+        return self._comp.__len__()
+
     @property
     def names(self) -> Tuple[str]:
         """

tests/test_component.py

@@ -383,3 +383,12 @@ def test_dunder_methods_items(mapdl, basic_components):
         assert [("MYCOMP1", "NODE"), ("MYCOMP2", "KP")] == list(
             mapdl.components.items()
         )
+
+    @staticmethod
+    def test_dunder_methods_len(mapdl, basic_components):
+        assert len(mapdl.components) == 2
+        mapdl.components["mycomp3"] = "NODE", [1, 2]
+        assert len(mapdl.components) == 3
+        mapdl.nsel("s", vmin=1)
+        mapdl.cm("asdf", "node")
+        assert len(mapdl.components) == 4