Enhance ClassRegistry

objtools/registry.py

@@ -1,5 +1,4 @@
-from typing import MutableMapping, Any, Callable
-from cached_property import cached_property
+from typing import Dict, Any, Callable
 
 
 class ClassRegistry(MutableMapping[str, Callable]):
@@ -35,13 +34,18 @@ class ClassRegistry(MutableMapping[str, Callable]):
         self.check(key, value)
         super().__setitem__(key, value)
 
-    @cached_property
     def metaclass(self) -> type:
         class RegistryMetaclass(type):
 
-            def __new__(cls, name: str, *args: Any, **kwargs: Any) -> type:
+            def __new__(cls,
+                        name: str,
+                        *args: Any,
+                        register: bool = True,
+                        key: Optional[str] = None,
+                        **kwargs: Any) -> type:
                 newclass = super().__new__(cls, name, *args, **kwargs)
-                self.register(name, newclass)
+                if register:
+                    self.register(key or name, newclass)
                 return newclass
 
         return RegistryMetaclass

requirements.txt

@@ -1 +0,0 @@
-cached-property>=1.5.1

setup.py

@@ -7,7 +7,8 @@ def read_requirements(filename: str) -> List[str]:
     return [req.strip() for req in open(filename)]
 
 
-requirements = read_requirements('requirements.txt')
+# requirements = read_requirements('requirements.txt')
+requirements = []
 dev_requirements = read_requirements('requirements-dev.txt')
 
 setup(