1.1.1 - Fix errors for python<3.10. Lock python>=3.9

README.md

@@ -6,10 +6,11 @@ A pure python (no special compiler required) type enforcer for type annotations.
 
 # Setup
 
-Make sure you have Python 3.7.x (or higher) installed on your system. You can download it [here](https://www.python.org/downloads/).
+Make sure you have Python 3.9.x (or higher) installed on your system. You can download it [here](https://www.python.org/downloads/). For older python versions (3.7 | 3.8), you should use type_enforced==0.0.16.
 
-- Note: Certain features are only available on newer python versions
+- Note: Certain features are only available on newer python versions:
     - EG: Staticmethod typechecking requires `python>=3.10`
+    - EG: Union types with `|` require `python>=3.10`
 
 ### Installation
 

pyproject.toml

@@ -12,13 +12,13 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "type_enforced"
-version = "1.1.0"
+version = "1.1.1"
 description = "A pure python type enforcer for python type annotations"
 authors = [
     {name="Connor Makowski", email="[email protected]"}
 ]
 readme = "README.md"
-requires-python = ">=3.7"
+requires-python = ">=3.9"
 classifiers = [
     "Programming Language :: Python :: 3",
     'License :: OSI Approved :: MIT License',

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = type_enfoced
-version = 1.1.0
+version = 1.1.1
 description_file = README.md
 
 [options]

test/test_fn_10.py

@@ -1,5 +1,11 @@
 import type_enforced
 from typing import Union
+import sys
+
+# Test | only if python version >= 3.10
+if sys.version_info < (3, 10):
+    print("test_fn_10.py skipped")
+    exit()
 
 
 @type_enforced.Enforcer

type_enforced/enforcer.py

@@ -1,7 +1,16 @@
-from types import FunctionType, MethodType, GenericAlias, UnionType
+from types import FunctionType, MethodType, GenericAlias
 from typing import Type, Union, Sized
 from functools import update_wrapper, wraps
 
+# Python 3.10+ has a UnionType object that is used to represent Union types
+try:
+    from types import UnionType
+except ImportError:
+    # Python < 3.10 does not have UnionType
+    # Since UnionType is validated after NoneType, we can use NoneType
+    # as a stand in for UnionType to ignore it in older versions of python
+    UnionType = type(None)
+
 
 class FunctionMethodEnforcer:
     def __init__(self, __fn__):