add tiramisu/asyncinit.py file

tiramisu/asyncinit.py

@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2019 Team tiramisu (see AUTHORS for all contributors)
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by the
+# Free Software Foundation, either version 3 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# largely inspired by https://github.com/kchmck/pyasyncinit
+# ____________________________________________________________
+from functools import wraps
+
+
+def asyncinit(obj):
+    @wraps(obj.__new__) 
+    async def new(cls, *args, **kwargs):
+        instance = object.__new__(cls)  # (cls, *args, **kwargs)        
+        await instance.__init__(*args, **kwargs)
+        return instance 
+    obj.__new__ = new
+    return obj