feat: add did you mean message for strict check (#54)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

dargs/dargs.py

@@ -465,8 +465,10 @@ def _check_strict(self, value: dict, path=None):
             return
         for name in value.keys():
             if name not in allowed_keys:
+                dym_message = did_you_mean(name, allowed_keys)
                 raise ArgumentKeyError(
-                    path, f"undefined key `{name}` is " "not allowed in strict mode"
+                    path,
+                    f"undefined key `{name}` is not allowed in strict mode. {dym_message}",
                 )
 
     # above are type checking part

tests/test_checker.py

@@ -88,8 +88,9 @@ def test_sub_fields(self):
             ca.check(err_dict1)
         err_dict1["base"]["sub2"]["subsub2"]["subsubsub1"] = 111
         ca.check(err_dict1)  # now should pass
-        with self.assertRaises(ArgumentKeyError):
+        with self.assertRaises(ArgumentKeyError) as cm:
             ca.check(err_dict1, strict=True)  # but should fail when strict
+        self.assertIn("Did you mean: subsubsub1?", str(cm.exception))
         err_dict1["base"]["sub2"] = None
         with self.assertRaises(ArgumentTypeError):
             ca.check(err_dict1)