Update src/leaderboard/read_evals.py

src/leaderboard/read_evals.py

@@ -53,6 +53,8 @@ likes_for_model = array_to_dict(arr=data, key="modelId", val="likes")
 print("microsoft/phi-2", likes_for_model["microsoft/phi-2"])
 
 
+from datetime import datetime, timedelta, timezone
+
 def parse_datetime(iso_datetime):
     """Parse an ISO datetime string to a datetime object."""
     try: