diff --git a/src/caoscrawler/sync_node.py b/src/caoscrawler/sync_node.py
index 860cda2fa8fbd2847a0f27489d253206f4ca3ebd..f3f7996c9cef786e9ac4b244569429a9c94236b1 100644
--- a/src/caoscrawler/sync_node.py
+++ b/src/caoscrawler/sync_node.py
@@ -23,13 +23,14 @@
 from __future__ import annotations
 
 import logging
-from typing import Any, Dict, List, Optional, Union, TYPE_CHECKING
+from typing import TYPE_CHECKING, Any, Optional, Union
 
 import linkahead as db
 import yaml
-from linkahead.common.models import _ParentList, _Properties, Parent
+from linkahead.common.models import Parent, _ParentList, _Properties
 
 from .exceptions import ImpossibleMergeError
+
 if TYPE_CHECKING:
     from .identifiable import Identifiable
 
@@ -40,8 +41,8 @@ class TempID(int):
     pass
 
 
-class SyncNode():
-    """ represents the information of an Entity as it shall be created in LinkAhead
+class SyncNode:
+    """represents the information of an Entity as it shall be created in LinkAhead
 
     The following information is taken from an db.Entity object during initialization or when the
     object is updated using the `update` member function:
@@ -60,8 +61,9 @@ class SyncNode():
     3. A db.Entity object is created (`export_entity`) that contains the combined information.
     """
 
-    def __init__(self, entity: db.Entity, registered_identifiable: Optional[db.RecordType] =
-                 None) -> None:
+    def __init__(
+        self, entity: db.Entity, registered_identifiable: Optional[db.RecordType] = None
+    ) -> None:
         # db.Entity properties
         self.id: Union[int, TempID, str] = entity.id
         self.role = entity.role
@@ -83,12 +85,16 @@ class SyncNode():
         """
 
         if other.identifiable is not None and self.identifiable is not None:
-            if (other.identifiable.get_representation() != self.identifiable.get_representation()):
+            if (
+                other.identifiable.get_representation()
+                != self.identifiable.get_representation()
+            ):
                 raise ValueError(
                     "The SyncNode that is used with update must have an equivalent"
                     f" identifiable. The identifiables where:\n"
                     f"{self.identifiable.get_representation()}\n"
-                    f"and\n{other.identifiable.get_representation()}.")
+                    f"and\n{other.identifiable.get_representation()}."
+                )
 
         if other.identifiable:
             self.identifiable = other.identifiable
@@ -105,7 +111,7 @@ class SyncNode():
             self.properties.append(p)
 
     def export_entity(self) -> db.Entity:
-        """ create a db.Entity object from this SyncNode
+        """create a db.Entity object from this SyncNode
 
         Properties are only added once (based on id or name). If values do not match, an Error is
         raised. If values are SyncNode objects with IDs, they are considered equal if their IDs are
@@ -150,15 +156,17 @@ class SyncNode():
                             unequal = True
 
                 if unequal:
-                    logger.error("The Crawler is trying to create an entity,"
-                                 " but there are have conflicting property values."
-                                 f"Problematic Property: {p.name}\n"
-                                 f"First value:\n{entval}\n"
-                                 f"Second value:\n{pval}\n"
-                                 f"{self}"
-                                 )
-                    ime = ImpossibleMergeError("Cannot merge Entities", pname=p.name,
-                                               values=(entval, pval))
+                    logger.error(
+                        "The Crawler is trying to create an entity,"
+                        " but there are have conflicting property values."
+                        f"Problematic Property: {p.name}\n"
+                        f"First value:\n{entval}\n"
+                        f"Second value:\n{pval}\n"
+                        f"{self}"
+                    )
+                    ime = ImpossibleMergeError(
+                        "Cannot merge Entities", pname=p.name, values=(entval, pval)
+                    )
                     raise ime
         return ent
 
@@ -168,8 +176,14 @@ class SyncNode():
             res += f"user: {self._metadata['user']}\n"
             res += f"json: {self._metadata['json']}\n"
         res += "---------------------------------------------------\n"
-        res += yaml.dump({"id": self.id, "name": self.name,
-                          "parents": [el.name for el in self.parents]}, allow_unicode=True)
+        res += yaml.dump(
+            {
+                "id": self.id,
+                "name": self.name,
+                "parents": [el.name for el in self.parents],
+            },
+            allow_unicode=True,
+        )
         res += "---------------------------------------------------\n"
         res += "properties:\n"
         d: dict[str, Any] = {}
@@ -180,18 +194,28 @@ class SyncNode():
                 v = [v]
             for el in v:
                 if isinstance(el, SyncNode):
-                    d[p.name].append({"id": el.id, "name": el.name, "parents": [e.name for e in
-                                                                                el.parents]})
+                    d[p.name].append(
+                        {
+                            "id": el.id,
+                            "name": el.name,
+                            "parents": [e.name for e in el.parents],
+                        }
+                    )
                 else:
                     d[p.name].append(el)
 
-        return (res + yaml.dump(d, allow_unicode=True)
-                + "=====================================================\n")
+        return (
+            res
+            + yaml.dump(d, allow_unicode=True)
+            + "=====================================================\n"
+        )
 
     def is_unidentifiable(self) -> bool:
         """returns whether this is an unidentifiable Node"""
-        return (self.registered_identifiable is not None and
-                self.registered_identifiable.get_property("no-ident") is not None)
+        return (
+            self.registered_identifiable is not None
+            and self.registered_identifiable.get_property("no-ident") is not None
+        )
 
 
 def parent_in_list(parent: Parent, plist: _ParentList) -> bool: