fix

src/anemoi/registry/entry/__init__.py

@@ -33,13 +33,12 @@ class CatalogueEntry:
 
     def __init__(self, key=None, path=None, must_exist=True):
         assert key is not None or path is not None, "key or path must be provided"
+        assert key is None or path is None, "key and path are mutually exclusive"
 
         if path is not None:
-            assert key is None
             self.load_from_path(path)
 
         if key is not None:
-            assert path is None
             if self.key_exists(key):
                 # found in catalogue so load it
                 self.load_from_key(key)
@@ -48,7 +47,7 @@ def __init__(self, key=None, path=None, must_exist=True):
                 if must_exist:
                     raise CatalogueEntryNotFound(f"Could not find any {self.collection} with key={key}")
                 else:
-                    self.create_from_new_new(key)
+                    self.create_from_new_key(key)
 
         assert self.record is not None
         assert self.key is not None, "key must be provided"

src/anemoi/registry/entry/experiment.py

@@ -8,6 +8,7 @@
 import datetime
 import logging
 import os
+from getpass import getuser
 
 import yaml
 from anemoi.utils.s3 import download
@@ -24,6 +25,12 @@ class ExperimentCatalogueEntry(CatalogueEntry):
     collection = "experiments"
     main_key = "expver"
 
+    def create_from_new_key(self, key):
+        assert self.key_exists(key) is False, f"{self.collection} with key={key} already exists"
+        metadata = dict(expver=key, user=getuser())
+        self.key = key
+        self.record = dict(expver=key, metadata=metadata, runs={})
+
     def load_from_path(self, path):
         assert os.path.exists(path), f"{path} does not exist"
         assert path.endswith(".yaml"), f"{path} must be a yaml file"