Use " instead of '

radicale/__init__.py

@@ -46,7 +46,7 @@ import vobject
 from radicale import auth, config, log, rights, storage, web, xmlutils
 from radicale.log import logger
 
-VERSION = pkg_resources.get_distribution('radicale').version
+VERSION = pkg_resources.get_distribution("radicale").version
 
 NOT_ALLOWED = (
     client.FORBIDDEN, (("Content-Type", "text/plain"),),

radicale/server.py

@@ -173,9 +173,9 @@ class RequestHandler(wsgiref.simple_server.WSGIRequestHandler):
 
         self.raw_requestline = self.rfile.readline(65537)
         if len(self.raw_requestline) > 65536:
-            self.requestline = ''
-            self.request_version = ''
-            self.command = ''
+            self.requestline = ""
+            self.request_version = ""
+            self.command = ""
             self.send_error(414)
             return