Add get() to Inventory.

PiperOrigin-RevId: 586037474

nisaba/scripts/natural_translit/utils/inventory2.py

@@ -117,3 +117,10 @@ def make_supp(self, alias: str, value: ...) -> None:
     """Adds the value as a supplement."""
     if self._add_field(alias, value):
       self.supp_aliases.append(alias)
+
+  def get(self, alias: str, default: ... = ty.MISSING) -> ...:
+    if alias in self.item_aliases or alias in self.supp_aliases:
+      return log.dbg_return(
+          getattr(self, alias, default), 'for alias ' + alias
+      )
+    return default

nisaba/scripts/natural_translit/utils/inventory2_test.py

@@ -99,5 +99,17 @@ def test_add_item_recurring_item(self):
     _i2.add_item(_T_CB_STR, 'value')
     self.assertLen(_i2, 2)
 
+  def test_get_item(self):
+    self.assertEqual(_i2.get('b'), _B_STR)
+
+  def test_get_supp(self):
+    self.assertEqual(_i2.get('d'), _D_INT)
+
+  def test_get_out_of_inventory(self):
+    self.assertEqual(_i2.get('x'), ty.MISSING)
+
+  def test_get_out_of_inventory_default(self):
+    self.assertIsNone(_i2.get('x', None))
+
 if __name__ == '__main__':
   absltest.main()