添加单例注解

utils/decorator/__init__.py

@@ -0,0 +1,13 @@
+class Singleton:
+
+    """
+    单例注解
+    """
+
+    def __init__(self, cls):
+        self._cls = cls
+
+    def __call__(self, *args, **kw):
+        if not hasattr(self, "_instance"):
+            self._instance = self._cls(*args, **kw)
+        return self._instance

utils/decorator/limit.py

@@ -1,6 +0,0 @@
-
-
-
-
-
-