Add 'groups' and 'names' to EntryPoints collections.

Author: jaraco

importlib_metadata/__init__.py

@@ -166,6 +166,10 @@ def __getitem__(self, name) -> EntryPoint:
         except Exception:
             raise KeyError(name)
 
+    @property
+    def names(self):
+        return set(ep.name for ep in self)
+
 
 class GroupedEntryPoints(tuple):
     """
@@ -175,6 +179,10 @@ class GroupedEntryPoints(tuple):
     def __getitem__(self, group) -> EntryPoints:
         return EntryPoints(ep for ep in self if ep.group == group)
 
+    @property
+    def groups(self):
+        return set(ep.group for ep in self)
+
 
 class PackagePath(pathlib.PurePosixPath):
     """A reference to a path in a package"""

tests/test_api.py

@@ -65,7 +65,11 @@ def test_read_text(self):
         self.assertEqual(top_level.read_text(), 'mod\n')
 
     def test_entry_points(self):
-        ep = entry_points()['entries']['main']
+        eps = entry_points()
+        assert 'entries' in eps.groups
+        entries = eps['entries']
+        assert 'main' in entries.names
+        ep = entries['main']
         self.assertEqual(ep.value, 'mod:main')
         self.assertEqual(ep.extras, [])