More poll/question bugfixes

utils/__init__.py

@@ -1,4 +1,8 @@
 import logging
+from datetime import datetime
+from datetime import timezone
+
+from dateutil import parser
 
 logger = logging.getLogger(__name__)
 
@@ -10,3 +14,14 @@ def strtobool(s: str) -> bool:
         return False
 
     raise ValueError(f"cannot convert {s} to bool")
+
+
+def parse_datetime(s :str) -> datetime:
+    # Parses the datetime with dateutil
+    dt = parser.parse(s)
+
+    # If no TZ is set, assumes it's UTC
+    if not dt.tzinfo:
+        dt = dt.replace(tzinfo=timezone.utc)
+
+    return dt