Add Python 3.14 support (#304)

* - transferring Python 3.14-related changes from the typing branch

* - apply latest zope.meta templates

* - fix test-related issues

* - fix version number in Sphinx docs

* - update transformer.INSPECT_ATTRIBUTES

* - use a pinned commit hash for astral/setup-uv action

* - remove outdated code and expand change log entry

* - fix test code

* - fix test code

Author: dataflake

.github/workflows/tests.yml

@@ -47,7 +47,8 @@ jobs:
       with:
         persist-credentials: false
     - name: Install uv + caching
-      uses: astral-sh/setup-uv@v6
+      # astral/setup-uv@7
+      uses: astral-sh/setup-uv@3259c6206f993105e3a61b142c2d97bf4b9ef83d
       with:
         enable-cache: true
         cache-dependency-glob: |

.meta.toml

@@ -2,7 +2,7 @@
 # https://github.com/zopefoundation/meta/tree/master/config/pure-python
 [meta]
 template = "pure-python"
-commit-id = "7dcce077"
+commit-id = "72252845"
 
 [python]
 with-pypy = false
@@ -55,7 +55,7 @@ coverage-setenv = [
     ]
 
 [coverage]
-fail-under = 97.3
+fail-under = 97.2
 
 [isort]
 additional-sources = "{toxinidir}/tests"

.pre-commit-config.yaml

@@ -3,7 +3,7 @@
 minimum_pre_commit_version: '3.6'
 repos:
   - repo: https://github.com/pycqa/isort
-    rev: "6.1.0"
+    rev: "7.0.0"
     hooks:
     - id: isort
   - repo: https://github.com/hhatto/autopep8
@@ -12,7 +12,7 @@ repos:
     - id: autopep8
       args: [--in-place, --aggressive, --aggressive]
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.20.0
+    rev: v3.21.0
     hooks:
     - id: pyupgrade
       args: [--py39-plus]

CHANGES.rst

@@ -4,7 +4,7 @@ Changes
 8.1 (unreleased)
 ----------------
 
-- Nothing changed yet.
+- Allow to use the package with Python 3.14 including t-string support.
 
 
 8.1a1.dev0 (2025-03-20)

docs/conf.py

@@ -60,9 +60,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '7.5'
+version = '8.1'
 # The full version, including alpha/beta/rc tags.
-release = '7.5'
+release = '8.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -117,6 +117,7 @@
     'python311': ('https://docs.python.org/3.11', None),
     'python312': ('https://docs.python.org/3.12', None),
     'python313': ('https://docs.python.org/3.13', None),
+    'python314': ('https://docs.python.org/3.14', None),
 }
 
 # Options for sphinx.ext.todo:

docs/contributing/ast/python3_14.ast

@@ -0,0 +1,196 @@
+-- Python 3.14 AST
+-- ASDL's 4 builtin types are:
+-- identifier, int, string, constant
+
+module Python version "3.14"
+{
+    mod = Module(stmt* body, type_ignore* type_ignores)
+        | Interactive(stmt* body)
+        | Expression(expr body)
+        | FunctionType(expr* argtypes, expr returns)
+
+    stmt = FunctionDef(identifier name,
+                       arguments args,
+                       stmt* body,
+                       expr* decorator_list,
+                       expr? returns,
+                       string? type_comment,
+                       type_param* type_params)
+         | AsyncFunctionDef(identifier name,
+                            arguments args,
+                            stmt* body,
+                            expr* decorator_list,
+                            expr? returns,
+                            string? type_comment,
+                            type_param* type_params)
+
+         | ClassDef(identifier name,
+                    expr* bases,
+                    keyword* keywords,
+                    stmt* body,
+                    expr* decorator_list,
+                    type_param* type_params)
+         | Return(expr? value)
+
+         | Delete(expr* targets)
+         | Assign(expr* targets, expr value, string? type_comment)
+         | TypeAlias(expr name, type_param* type_params, expr value)
+         | AugAssign(expr target, operator op, expr value)
+         -- 'simple' indicates that we annotate simple name without parens
+         | AnnAssign(expr target, expr annotation, expr? value, int simple)
+
+         -- use 'orelse' because else is a keyword in target languages
+         | For(expr target, expr iter, stmt* body, stmt* orelse, string? type_comment)
+         | AsyncFor(expr target, expr iter, stmt* body, stmt* orelse, string? type_comment)
+         | While(expr test, stmt* body, stmt* orelse)
+         | If(expr test, stmt* body, stmt* orelse)
+         | With(withitem* items, stmt* body, string? type_comment)
+         | AsyncWith(withitem* items, stmt* body, string? type_comment)
+
+         | Match(expr subject, match_case* cases)
+
+         | Raise(expr? exc, expr? cause)
+         | Try(stmt* body, excepthandler* handlers, stmt* orelse, stmt* finalbody)
+         | TryStar(stmt* body, excepthandler* handlers, stmt* orelse, stmt* finalbody)
+         | Assert(expr test, expr? msg)
+
+         | Import(alias* names)
+         | ImportFrom(identifier? module, alias* names, int? level)
+
+         | Global(identifier* names)
+         | Nonlocal(identifier* names)
+         | Expr(expr value)
+         | Pass
+         | Break
+         | Continue
+
+         -- col_offset is the byte offset in the utf8 string the parser uses
+         attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset)
+
+         -- BoolOp() can use left & right?
+    expr = BoolOp(boolop op, expr* values)
+         | NamedExpr(expr target, expr value)
+         | BinOp(expr left, operator op, expr right)
+         | UnaryOp(unaryop op, expr operand)
+         | Lambda(arguments args, expr body)
+         | IfExp(expr test, expr body, expr orelse)
+         | Dict(expr?* keys, expr* values)
+         | Set(expr* elts)
+         | ListComp(expr elt, comprehension* generators)
+         | SetComp(expr elt, comprehension* generators)
+         | DictComp(expr key, expr value, comprehension* generators)
+         | GeneratorExp(expr elt, comprehension* generators)
+         -- the grammar constrains where yield expressions can occur
+         | Await(expr value)
+         | Yield(expr? value)
+         | YieldFrom(expr value)
+         -- need sequences for compare to distinguish between
+         -- x < 4 < 3 and (x < 4) < 3
+         | Compare(expr left, cmpop* ops, expr* comparators)
+         | Call(expr func, expr* args, keyword* keywords)
+         | FormattedValue(expr value, int conversion, expr? format_spec)
+         | Interpolation(expr value, constant str, int conversion, expr? format_spec)
+         | JoinedStr(expr* values)
+         | TemplateStr(expr* values)
+         | Constant(constant value, string? kind)
+
+         -- the following expression can appear in assignment context
+         | Attribute(expr value, identifier attr, expr_context ctx)
+         | Subscript(expr value, expr slice, expr_context ctx)
+         | Starred(expr value, expr_context ctx)
+         | Name(identifier id, expr_context ctx)
+         | List(expr* elts, expr_context ctx)
+         | Tuple(expr* elts, expr_context ctx)
+
+         -- can appear only in Subscript
+         | Slice(expr? lower, expr? upper, expr? step)
+
+          -- col_offset is the byte offset in the utf8 string the parser uses
+          attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset)
+
+    expr_context = Load
+                 | Store
+                 | Del
+
+    boolop = And
+           | Or
+
+    operator = Add
+             | Sub
+             | Mult
+             | MatMult
+             | Div
+             | Mod
+             | Pow
+             | LShift
+             | RShift
+             | BitOr
+             | BitXor
+             | BitAnd
+             | FloorDiv
+
+    unaryop = Invert
+            | Not
+            | UAdd
+            | USub
+
+    cmpop = Eq
+          | NotEq
+          | Lt
+          | LtE
+          | Gt
+          | GtE
+          | Is
+          | IsNot
+          | In
+          | NotIn
+
+    comprehension = (expr target, expr iter, expr* ifs, int is_async)
+
+    excepthandler = ExceptHandler(expr? type, identifier? name, stmt* body)
+                    attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset)
+
+    arguments = (arg* posonlyargs,
+                 arg* args,
+                 arg? vararg,
+                 arg* kwonlyargs,
+                 expr* kw_defaults,
+                 arg? kwarg,
+                 expr* defaults)
+
+    arg = (identifier arg, expr? annotation, string? type_comment)
+          attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset)
+
+    -- keyword arguments supplied to call (NULL identifier for **kwargs)
+    keyword = (identifier? arg, expr value)
+              attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset)
+
+    -- import name with optional 'as' alias.
+    alias = (identifier name, identifier? asname)
+            attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset)
+
+    withitem = (expr context_expr, expr? optional_vars)
+
+    match_case = (pattern pattern, expr? guard, stmt* body)
+
+    pattern = MatchValue(expr value)
+            | MatchSingleton(constant value)
+            | MatchSequence(pattern* patterns)
+            | MatchMapping(expr* keys, pattern* patterns, identifier? rest)
+            | MatchClass(expr cls, pattern* patterns, identifier* kwd_attrs, pattern* kwd_patterns)
+
+            | MatchStar(identifier? name)
+            -- The optional "rest" MatchMapping parameter handles capturing extra mapping keys
+
+            | MatchAs(pattern? pattern, identifier? name)
+            | MatchOr(pattern* patterns)
+
+             attributes (int lineno, int col_offset, int end_lineno, int end_col_offset)
+
+    type_ignore = TypeIgnore(int lineno, string tag)
+
+    type_param = TypeVar(identifier name, expr? bound, expr? default_value)
+               | ParamSpec(identifier name, expr? default_value)
+               | TypeVarTuple(identifier name, expr? default_value)
+               attributes (int lineno, int col_offset, int end_lineno, int end_col_offset)
+}

docs/contributing/changes_from313to314.rst

@@ -0,0 +1,5 @@
+Changes from Python 3.13 to Python 3.14
+---------------------------------------
+
+.. literalinclude:: ast/python3_14.ast
+   :diff: ast/python3_13.ast

docs/contributing/index.rst

@@ -103,6 +103,7 @@ A (modified style) Copy of all Abstract Grammar Definitions for the Python versi
    changes_from310to311
    changes_from311to312
    changes_from312to313
+   changes_from313to314
 
 .. _understand:
 
@@ -235,6 +236,7 @@ Technical Backgrounds - Links to External Documentation
 
   * AST Grammar of Python (`Status of Python Versions`_)
 
+    * `Python 3.14 AST`_ (EOL 2030-10)
     * `Python 3.13 AST`_ (EOL 2029-10)
     * `Python 3.12 AST`_ (EOL 2028-10)
     * `Python 3.11 AST`_ (EOL 2027-10)
@@ -257,6 +259,8 @@ Todos
 
 .. _`What's new in Python`: https://docs.python.org/3/whatsnew/
 
+.. _`What's new in Python 3.14`: https://docs.python.org/3.14/whatsnew/3.14.html
+
 .. _`What's new in Python 3.13`: https://docs.python.org/3.13/whatsnew/3.13.html
 
 .. _`What's new in Python 3.12`: https://docs.python.org/3.12/whatsnew/3.12.html
@@ -281,6 +285,8 @@ Todos
 
 .. _`Python 3 AST`: https://docs.python.org/3/library/ast.html#abstract-grammar
 
+.. _`Python 3.14 AST`: https://docs.python.org/3.14/library/ast.html#abstract-grammar
+
 .. _`Python 3.13 AST`: https://docs.python.org/3.13/library/ast.html#abstract-grammar
 
 .. _`Python 3.12 AST`: https://docs.python.org/3.12/library/ast.html#abstract-grammar

pyproject.toml

@@ -14,7 +14,7 @@ branch = true
 source = ["RestrictedPython"]
 
 [tool.coverage.report]
-fail_under = 97.3
+fail_under = 97.2
 precision = 2
 ignore_errors = true
 show_missing = true

setup.py

@@ -44,6 +44,7 @@ def read(*rnames):
           'Programming Language :: Python :: 3.11',
           'Programming Language :: Python :: 3.12',
           'Programming Language :: Python :: 3.13',
+          'Programming Language :: Python :: 3.14',
           'Programming Language :: Python :: Implementation :: CPython',
           'Topic :: Security',
       ],