diff --git a/src/sheerkarete/network.py b/src/sheerkarete/network.py
index 6b47a26..797d9e7 100644
--- a/src/sheerkarete/network.py
+++ b/src/sheerkarete/network.py
@@ -35,6 +35,7 @@ class ReteNetwork:
     """
 
     def __init__(self):
+
         self.alpha_hash: Dict[Tuple[Hashable, Hashable, Hashable], List[AlphaMemory]] = {}
         self.beta_root = ReteNode()
         self.pnodes: List[PNode] = []  # list of all production nodes