Improve validator typing to allow non-number formats for min and max (#…

…516)

voluptuous/validators.py

@@ -1,4 +1,6 @@
 # fmt: off
+from __future__ import annotations
+
 import datetime
 import os
 import re
@@ -18,6 +20,9 @@
 # F401: flake8 complains about 'raises' not being used, but it is used in doctests
 from voluptuous.schema_builder import Schema, Schemable, message, raises  # noqa: F401
 
+if typing.TYPE_CHECKING:
+    from _typeshed import SupportsAllComparisons
+
 # fmt: on
 
 
@@ -610,9 +615,6 @@ def Maybe(validator: typing.Callable, msg: typing.Optional[str] = None):
     return Any(None, validator, msg=msg)
 
 
-NullableNumber = typing.Union[int, float, None]
-
-
 class Range(object):
     """Limit a value to a range.
 
@@ -636,8 +638,8 @@ class Range(object):
 
     def __init__(
         self,
-        min: NullableNumber = None,
-        max: NullableNumber = None,
+        min: SupportsAllComparisons | None = None,
+        max: SupportsAllComparisons | None = None,
         min_included: bool = True,
         max_included: bool = True,
         msg: typing.Optional[str] = None,
@@ -705,8 +707,8 @@ class Clamp(object):
 
     def __init__(
         self,
-        min: NullableNumber = None,
-        max: NullableNumber = None,
+        min: SupportsAllComparisons | None = None,
+        max: SupportsAllComparisons | None = None,
         msg: typing.Optional[str] = None,
     ) -> None:
         self.min = min
@@ -736,8 +738,8 @@ class Length(object):
 
     def __init__(
         self,
-        min: NullableNumber = None,
-        max: NullableNumber = None,
+        min: SupportsAllComparisons | None = None,
+        max: SupportsAllComparisons | None = None,
         msg: typing.Optional[str] = None,
     ) -> None:
         self.min = min