added config.py for env variables but not working yet

src/util/config.py

@@ -0,0 +1,28 @@
+import logging
+import os
+
+import environ
+
+from services.service import Singleton
+
+logger = logging.getLogger(__name__)
+
+
+def init():
+    env = environ.Env(DEBUG=(bool, False))
+    path = os.path.join((environ.Path(__file__) - 3).__str__(), '.env')
+    if os.path.exists(path):
+        environ.Env.read_env(path)
+        logger.info("env file %s loaded" % path)
+    # no warning even if .env doesn't exist as it's not required
+    # e.g. for docker containers, usually environment variables are preferred.
+
+    return env
+
+
+class Env(metaclass=Singleton):
+    def __init__(self):
+        self.env = init()
+
+
+env = Env().env