int value is allowed for float type

dargs/dargs.py

@@ -18,12 +18,14 @@
 """
 
 
-from typing import Union, Any, List, Dict, Iterable, Optional, Callable
-from textwrap import indent
+import fnmatch
+import json
+import re
 from copy import deepcopy
 from enum import Enum
-import fnmatch, re
-import json
+from numbers import Real
+from textwrap import indent
+from typing import Any, Callable, Dict, Iterable, List, Optional, Union
 
 
 INDENT = "    "  # doc is indented by four spaces
@@ -412,7 +414,8 @@ def _check_exist(self, argdict: dict, path=None):
             )
 
     def _check_data(self, value: Any, path=None):
-        if not isinstance(value, self.dtype):
+        if not (isinstance(value, self.dtype)
+                or (float in self.dtype and isinstance(value, Real))):
             raise ArgumentTypeError(
                 path,
                 f"key `{self.name}` gets wrong value type, "

tests/test_checker.py

@@ -24,6 +24,9 @@ def test_name_type(self):
         # special handle of None
         ca = Argument("key1", [int, None])
         ca.check({"key1": None})
+        # special handel of int and float
+        ca = Argument("key1", float)
+        ca.check({"key1": 1})
         # optional case
         ca = Argument("key1", int, optional=True)
         ca.check({})