Add common converters date_to_datetime & to_just_number

server/entertainment_decider/common/__init__.py

@@ -1,3 +1,7 @@
+from ._converter import (
+    date_to_datetime,
+    to_just_number,
+)
 from ._itertools import (
     all_same,
     fix_iter,
@@ -15,8 +19,10 @@ from ._subprocess import (
 __all__ = [
     "all_same",
     "call",
+    "date_to_datetime",
     "fix_iter",
     "iter_lookahead",
     "limit_iter",
+    "to_just_number",
     "update_bool_value",
 ]

server/entertainment_decider/common/_converter.py

@@ -0,0 +1,15 @@
+from datetime import date, datetime
+from typing import (
+    Optional,
+)
+
+
+def date_to_datetime(d: date) -> datetime:
+    return datetime(d.year, d.month, d.day)
+
+
+def to_just_number(name: str) -> Optional[int]:
+    try:
+        return int(name)
+    except ValueError:
+        return None