Support Python 3.13

This moves to using the 3.13 grammar as well as testing 3.13 in CI.

.github/workflows/ci.yml

@@ -7,8 +7,8 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-20.04, windows-2019]
-        python-version: ["3.12", "3.11", "3.10", "3.9", "3.8", "3.7", "3.6"]
-        environment: ['3.8', '3.12', '3.11', '3.10', '3.9', '3.7', '3.6', 'interpreter']
+        python-version: ["3.13", "3.12", "3.11", "3.10", "3.9", "3.8", "3.7", "3.6"]
+        environment: ['3.8', '3.13', '3.12', '3.11', '3.10', '3.9', '3.7', '3.6', 'interpreter']
     steps:
       - name: Checkout code
         uses: actions/checkout@v4

CHANGELOG.rst

@@ -6,6 +6,8 @@ Changelog
 Unreleased
 ++++++++++
 
+- Python 3.13 support
+
 0.19.1 (2023-10-02)
 +++++++++++++++++++
 

jedi/api/environment.py

@@ -17,7 +17,7 @@
 
 _VersionInfo = namedtuple('VersionInfo', 'major minor micro')  # type: ignore[name-match]
 
-_SUPPORTED_PYTHONS = ['3.12', '3.11', '3.10', '3.9', '3.8', '3.7', '3.6']
+_SUPPORTED_PYTHONS = ['3.13', '3.12', '3.11', '3.10', '3.9', '3.8', '3.7', '3.6']
 _SAFE_PATHS = ['/usr/bin', '/usr/local/bin']
 _CONDA_VAR = 'CONDA_PREFIX'
 _CURRENT_VERSION = '%s.%s' % (sys.version_info.major, sys.version_info.minor)

jedi/inference/__init__.py

@@ -90,7 +90,7 @@ def __init__(self, project, environment=None, script_path=None):
         self.compiled_subprocess = environment.get_inference_state_subprocess(self)
         self.grammar = environment.get_grammar()
 
-        self.latest_grammar = parso.load_grammar(version='3.12')
+        self.latest_grammar = parso.load_grammar(version='3.13')
         self.memoize_cache = {}  # for memoize decorators
         self.module_cache = imports.ModuleCache()  # does the job of `sys.modules`.
         self.stub_module_cache = {}  # Dict[Tuple[str, ...], Optional[ModuleValue]]

setup.py

@@ -35,8 +35,8 @@
       long_description=readme,
       packages=find_packages(exclude=['test', 'test.*']),
       python_requires='>=3.6',
-      # Python 3.11 & 3.12 grammars are added to parso in 0.8.3
-      install_requires=['parso>=0.8.3,<0.9.0'],
+      # Python 3.13 grammars are added to parso in 0.8.4
+      install_requires=['parso>=0.8.4,<0.9.0'],
       extras_require={
           'testing': [
               'pytest<7.0.0',
@@ -101,6 +101,7 @@
           'Programming Language :: Python :: 3.10',
           'Programming Language :: Python :: 3.11',
           'Programming Language :: Python :: 3.12',
+          'Programming Language :: Python :: 3.13',
           'Topic :: Software Development :: Libraries :: Python Modules',
           'Topic :: Text Editors :: Integrated Development Environments (IDE)',
           'Topic :: Utilities',