diff --git a/src/repdav/textgrid_named_dav_provider.py b/src/repdav/textgrid_named_dav_provider.py
index 7216b5c43c1675c346f9c83ebb06dcf8e2fc054e..dd03452ff274401ef922d927532849ae7c5ca63b 100644
--- a/src/repdav/textgrid_named_dav_provider.py
+++ b/src/repdav/textgrid_named_dav_provider.py
@@ -10,10 +10,13 @@ from tgclients.auth import TextgridAuth
 from wsgidav.util import join_uri
 
 from repdav.stream_tools import FileLikeQueue
-from repdav.textgrid_dav_provider import (TextgridAggregation, TextgridProject,
-                                          TextgridResource,
-                                          TextgridResourceProvider,
-                                          TextgridRoot)
+from repdav.textgrid_dav_provider import (
+    TextgridAggregation,
+    TextgridProject,
+    TextgridResource,
+    TextgridResourceProvider,
+    TextgridRoot,
+)
 
 _logger = logging.getLogger(__name__)
 
@@ -42,6 +45,7 @@ class TextgridNamedRoot(TextgridRoot):
     """
 
     def __init__(self, path, environ):
+        # TODO: do not overwrite but move to parent class
         super().__init__(path, environ)
         config = TextgridConfig()
         self._auth = TextgridAuth(config)
@@ -50,7 +54,9 @@ class TextgridNamedRoot(TextgridRoot):
         _logger.debug("Called TextgridNamedRoot.get_member_names(self).")
         projects = []
         for project in tuple(self._auth.list_assigned_projects(self._sid)):
-            projects.append(self._auth.get_project_description(project).name + ' [' + project + ']')
+            projects.append(
+                self._auth.get_project_description(project).name + " [" + project + "]"
+            )
         _logger.debug("MY PROJECTS: %s", projects)
         return projects
 
@@ -58,6 +64,7 @@ class TextgridNamedRoot(TextgridRoot):
         _logger.debug("Called TextgridRoot.get_member(self, %s).", name)
         return TextgridNamedProject(join_uri(self.path, name), self.environ)
 
+
 class TextgridNamedProject(TextgridProject):
     def __init__(self, path, environ):
         _logger.debug("Called TextgridNamedProject.__init__(self, %s, environ).", path)
@@ -74,7 +81,7 @@ class TextgridNamedProject(TextgridProject):
         #
         # path resolution has to be rewritten before we can work with resource titles
         name = self.path.split("/")[-1]
-        project_id = name[name.rfind('[')+1:name.rfind(']')]
+        project_id = name[name.rfind("[") + 1 : name.rfind("]")]
         response = self._tgsearch.list_project_root(project_id, self._sid)
         names = []
         for result in response.result:
@@ -83,7 +90,7 @@ class TextgridNamedProject(TextgridProject):
 
     def get_member(self, name):
         _logger.debug("Called TextgridNamedProject.get_member(self, %s).", name)
-        tguri = 'textgrid:' + self._tgmeta.id_from_filename(name)
+        tguri = "textgrid:" + self._tgmeta.id_from_filename(name)
         response = self._tgsearch.info(tguri, self._sid)
         info = {
             name: {
@@ -94,8 +101,13 @@ class TextgridNamedProject(TextgridProject):
         }
         _logger.info("INFO: %s", info)
         if "aggregation" in info[name]["format"]:
-            return TextgridNamedAggregation(join_uri(self.path, name), self.environ, info, self._tgmeta)
-        return TextgridNamedResource(join_uri(self.path, name), self.environ, info, self._tgmeta)
+            return TextgridNamedAggregation(
+                join_uri(self.path, name), self.environ, info, self._tgmeta
+            )
+        return TextgridNamedResource(
+            join_uri(self.path, name), self.environ, info, self._tgmeta
+        )
+
 
 class TextgridNamedAggregation(TextgridAggregation):
     def __init__(self, path, environ, info, tgmeta):
@@ -107,7 +119,7 @@ class TextgridNamedAggregation(TextgridAggregation):
 
     def get_member_names(self):
         _logger.debug("Called TextgridNamedAggregation.get_member_names(self).")
-        tguri = 'textgrid:' + self._tgmeta.id_from_filename(self.path.split("/")[-1])
+        tguri = "textgrid:" + self._tgmeta.id_from_filename(self.path.split("/")[-1])
         response = self._tgsearch.list_aggregation(tguri, self._sid)
         names = []
         for result in response.result:
@@ -116,7 +128,7 @@ class TextgridNamedAggregation(TextgridAggregation):
 
     def get_member(self, name):
         _logger.debug("Called TextgridNamedAggregation.get_member(self, %s).", name)
-        tguri = 'textgrid:' + self._tgmeta.id_from_filename(name)
+        tguri = "textgrid:" + self._tgmeta.id_from_filename(name)
         response = self._tgsearch.info(tguri, self._sid)
         info = {
             name: {
@@ -127,8 +139,13 @@ class TextgridNamedAggregation(TextgridAggregation):
         }
         _logger.info("INFO: %s", info)
         if "aggregation" in info[name]["format"]:
-            return TextgridNamedAggregation(join_uri(self.path, name), self.environ, info, self._tgmeta)
-        return TextgridNamedResource(join_uri(self.path, name), self.environ, info, self._tgmeta)
+            return TextgridNamedAggregation(
+                join_uri(self.path, name), self.environ, info, self._tgmeta
+            )
+        return TextgridNamedResource(
+            join_uri(self.path, name), self.environ, info, self._tgmeta
+        )
+
 
 class TextgridNamedResource(TextgridResource):
     """Non-Aggregation resources."""
@@ -141,10 +158,12 @@ class TextgridNamedResource(TextgridResource):
         self._crud = TextgridCRUD(config.crud)
 
     def get_content(self):
-        _logger.debug("Called TextgridNamedResource.get_content(self) with path:", self.path)
-        tguri = 'textgrid:' + self._tgmeta.id_from_filename(self.path.split("/")[-1])
+        _logger.debug(
+            "Called TextgridNamedResource.get_content(self) with path: %s", self.path
+        )
+        # TODO: make tguri (super!) class member
+        tguri = "textgrid:" + self._tgmeta.id_from_filename(self.path.split("/")[-1])
 
-        _logger.debug("crud-read: " +  tguri)
         return io.BytesIO(self._crud.read_data(tguri, self._sid).content)
 
     def begin_write(self, content_type=None):
@@ -153,7 +172,7 @@ class TextgridNamedResource(TextgridResource):
         )
 
         queue = FileLikeQueue(int(self._size))
-        tguri = 'textgrid:' + self._tgmeta.id_from_filename(self.path.split("/")[-1])
+        tguri = "textgrid:" + self._tgmeta.id_from_filename(self.path.split("/")[-1])
         metadata = self._crud.read_metadata(tguri, self._sid).content
 
         def worker():