Dropping support for Python 3.7 and moving Literal from typing_extens…

…ions to typing

.github/workflows/tests.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.8', '3.9', '3.10', '3.11']
 
     steps:
     - uses: actions/checkout@main

README.md

@@ -39,7 +39,7 @@ Running `python square.py --num 2` will print `The square of your number is 4.0.
 
 ## Installation
 
-Tap requires Python 3.7+
+Tap requires Python 3.8+
 
 To install Tap from PyPI run: 
 ```
@@ -281,7 +281,7 @@ Tuples can be used to specify a fixed number of arguments with specified types u
 
 #### `Literal`
 
-Literal is analagous to argparse's [choices](https://docs.python.org/3/library/argparse.html#choices), which specifies the values that an argument can take. For example, if arg can only be one of 'H', 1, False, or 1.0078 then you would specify that `arg: Literal['H', 1, False, 1.0078]`. For instance, `--arg False` assigns arg to False and `--arg True` throws error. The `Literal` type was introduced in Python 3.8 ([PEP 586](https://www.python.org/dev/peps/pep-0586/)) and can be imported with `from typing_extensions import Literal`.
+Literal is analagous to argparse's [choices](https://docs.python.org/3/library/argparse.html#choices), which specifies the values that an argument can take. For example, if arg can only be one of 'H', 1, False, or 1.0078 then you would specify that `arg: Literal['H', 1, False, 1.0078]`. For instance, `--arg False` assigns arg to False and `--arg True` throws error.
 
 #### `Union`
 

setup.py

@@ -26,15 +26,13 @@
     packages=find_packages(),
     package_data={'tap': ['py.typed']},
     install_requires=[
-        'typing_extensions >= 3.7.4',
         'typing-inspect >= 0.7.1',
         'docstring-parser >= 0.15'
     ],
     tests_require=['pytest'],
-    python_requires='>=3.7',
+    python_requires='>=3.8',
     classifiers=[
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',

tap/utils.py

@@ -19,11 +19,11 @@
     Generator,
     Iterator,
     List,
+    Literal,
     Optional,
     Tuple,
     Union,
 )
-from typing_extensions import Literal
 from typing_inspect import get_args as typing_inspect_get_args, get_origin as typing_inspect_get_origin
 
 if sys.version_info >= (3, 10):

tests/test_actions.py

@@ -1,6 +1,5 @@
 import sys
-from typing import List
-from typing_extensions import Literal
+from typing import List, Literal
 import unittest
 from unittest import TestCase
 

tests/test_integration.py

@@ -5,8 +5,7 @@
 import pickle
 import sys
 from tempfile import TemporaryDirectory
-from typing import Any, Iterable, List, Optional, Set, Tuple, Union
-from typing_extensions import Literal
+from typing import Any, Iterable, List, Literal, Optional, Set, Tuple, Union
 import unittest
 from unittest import TestCase
 

tests/test_subparser.py

@@ -1,7 +1,6 @@
 from argparse import ArgumentError
 import sys
-from typing import Union
-from typing_extensions import Literal
+from typing import Literal, Union
 import unittest
 from unittest import TestCase
 

tests/test_utils.py

@@ -4,10 +4,9 @@
 import os
 import subprocess
 from tempfile import TemporaryDirectory
-from typing import Any, Callable, List, Dict, Set, Tuple, Union
+from typing import Any, Callable, List, Literal, Dict, Set, Tuple, Union
 import unittest
 from unittest import TestCase
-from typing_extensions import Literal
 
 from tap.utils import (
     get_class_column,