Faster tree search with networkx

src/spyglass/common/common_usage.py

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+"""A schema to store the usage of advanced Spyglass features.
+
+Records show usage of features such as table chains, which will be used to
+determine which features are used, how often, and by whom. This will help 
+plan future development of Spyglass.
+"""
+import datajoint as dj
+
+schema = dj.schema("common_usage")
+
+
+@schema
+class CautiousDelete(dj.Manual):
+    definition = """
+    id: int auto_increment
+    ---
+    dj_user: varchar(64)
+    duration: float
+    origin: varchar(64)
+    restriction: varchar(64)
+    merge_deletes = null: blob
+    """