Python 3.14 support

.github/workflows/cis.yml

@@ -20,7 +20,7 @@ jobs:
     name: Lint code
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
@@ -42,8 +42,6 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - python-version: "3.8"
-            toxenv: py38
           - python-version: "3.9"
             toxenv: py39
           - python-version: "3.10"
@@ -54,8 +52,10 @@ jobs:
             toxenv: py312
           - python-version: "3.13"
             toxenv: py313
+          - python-version: "3.14-dev"
+            toxenv: py314
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Get history and tags for SCM versioning to work
         run: |
           git fetch --prune --unshallow

.github/workflows/docs.yml

@@ -19,7 +19,7 @@ jobs:
     name: Docs building
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Get history and tags for SCM versioning to work
         run: |
           git fetch --prune --unshallow

.github/workflows/frameworks.yml

@@ -21,10 +21,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Get history and tags for SCM versioning to work
         run: |
           git fetch --prune --unshallow
@@ -43,7 +43,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Get history and tags for SCM versioning to work
         run: |
           git fetch --prune --unshallow
@@ -72,6 +72,11 @@ jobs:
     if: github.event_name == 'push'
     needs: [build_wheel, build_sdist]
     runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/kiwisolver
+    permissions:
+      id-token: write
     steps:
       - name: Download all the dists
         uses: actions/download-artifact@v5.0.0
@@ -81,11 +86,6 @@ jobs:
           merge-multiple: true
 
       - uses: pypa/gh-action-pypi-publish@release/v1
-        with:
-          user: __token__
-          password: ${{ secrets.pypi_password }}
-          # To test:
-          # repository_url: https://test.pypi.org/legacy/
 
   github-release:
     name: >-
@@ -107,9 +107,8 @@ jobs:
         path: dist
         merge-multiple: true
     - name: Sign the dists with Sigstore
-      uses: sigstore/gh-action-sigstore-python@v2.1.0
+      uses: sigstore/gh-action-sigstore-python@v3.0.1
       with:
-        password: ${{ secrets.pypi_password }}
         inputs: >-
           ./dist/*.tar.gz
           ./dist/*.whl

doc/changelog.rst

@@ -1,6 +1,28 @@
 ChangeLog
 =========
 
+unreleased: Version 0.17.0
+--------------------------
+
+New features:
+
+- Add support for Python 3.14 PR #166
+
+  Support for Python 3.14, comes with a number of changes reflecting changes in
+  CPython bytecode itself:
+
+  - introduced an enum for BINARY_OP argument which now supports subscribe.
+    When disassembling the enum is always used, when creating bytecode from
+    scratch integer values are coerced into the right enum member.
+  - support BUILD_TEMPLATE, BUILD_INTERPOLATION, LOAD_SMALL_INT, LOAD_FAST_BORROW
+    and LOAD_FAST_BORROW_LOAD_FAST_BORROW
+  - LOAD_COMMON_CONSTANT, LOAD_SPECIAL whose argument is described using dedicated
+    enums CommonConstant, SpecialMethod
+  - CONVERT_VALUE (FORMAT_VALUE in Python < 3.13) now use the FormatValue enum.
+    When disassembling the enum is always used, when creating bytecode from
+    scratch integer values are coerced into the right enum member.
+
+
 2025-04-14: Version 0.16.2
 --------------------------
 

pyproject.toml

@@ -2,7 +2,7 @@
   name = "bytecode"
   description = "Python module to generate and modify bytecode"
   readme = "README.rst"
-  requires-python = ">=3.8"
+  requires-python = ">=3.9"
   license = { file = "COPYING" }
   authors = [{ name = "Victor Stinner", email = "victor.stinner@gmail.com" }]
   maintainers = [{ name = "Matthieu C. Dartiailh", email = "m.dartiailh@gmail.com" }]
@@ -13,12 +13,12 @@
     "Natural Language :: English",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Topic :: Software Development :: Libraries :: Python Modules",
   ]
   dependencies = ["typing_extensions;python_version<'3.10'"]
@@ -36,6 +36,18 @@
   requires      = ["setuptools>=61.2", "wheel", "setuptools_scm[toml]>=3.4.3"]
   build-backend = "setuptools.build_meta"
 
+[dependency-groups]
+  dev = [
+    "mypy>=1.16.1",
+    "pytest>=8",
+    "pytest-cov>=6",
+    "ruff>=0.12.0",
+  ]
+  test = [
+    "pytest>=8",
+    "pytest-cov",
+  ]
+
 [tool.setuptools_scm]
   write_to = "src/bytecode/version.py"
   write_to_template = """
@@ -74,7 +86,7 @@ __version__ = "{version}"
       extra-standard-library = ["opcode"]
 
     [tool.ruff.lint.mccabe]
-      max-complexity = 42
+      max-complexity = 43
 
 [tool.mypy]
   follow_imports  = "normal"

src/bytecode/concrete.py

@@ -26,18 +26,25 @@
 from bytecode.flags import CompilerFlags
 from bytecode.instr import (
     _UNSET,
+    BINARY_OPS,
     BITFLAG2_OPCODES,
     BITFLAG_OPCODES,
+    COMMON_CONSTANT_OPS,
     DUAL_ARG_OPCODES,
     DUAL_ARG_OPCODES_SINGLE_OPS,
+    FORMAT_VALUE_OPS,
     INTRINSIC,
     INTRINSIC_1OP,
     INTRINSIC_2OP,
     PLACEHOLDER_LABEL,
+    SPECIAL_OPS,
     UNSET,
     BaseInstr,
+    BinaryOp,
     CellVar,
+    CommonConstant,
     Compare,
+    FormatValue,
     FreeVar,
     Instr,
     InstrArg,
@@ -46,6 +53,7 @@
     Intrinsic2Op,
     Label,
     SetLineno,
+    SpecialMethod,
     TryBegin,
     TryEnd,
     _check_arg_int,
@@ -1056,7 +1064,10 @@ def to_bytecode(
                         arg = locals_lookup[c_arg]
                 elif opcode in _opcode.hasname:
                     if opcode in BITFLAG_OPCODES:
-                        arg = (bool(c_arg & 1), self.names[c_arg >> 1])
+                        arg = (
+                            bool(c_arg & 1),
+                            self.names[c_arg >> 1],
+                        )
                     elif opcode in BITFLAG2_OPCODES:
                         arg = (bool(c_arg & 1), bool(c_arg & 2), self.names[c_arg >> 2])
                     else:
@@ -1082,6 +1093,20 @@ def to_bytecode(
                     arg = Intrinsic1Op(c_arg)
                 elif opcode in INTRINSIC_2OP:
                     arg = Intrinsic2Op(c_arg)
+                elif opcode in BINARY_OPS:
+                    arg = BinaryOp(c_arg)
+                elif opcode in COMMON_CONSTANT_OPS:
+                    arg = CommonConstant(c_arg)
+                elif opcode in SPECIAL_OPS:
+                    arg = SpecialMethod(c_arg)
+                elif opcode in FORMAT_VALUE_OPS:
+                    if opcode in BITFLAG_OPCODES:
+                        arg = (
+                            bool(c_arg & 1),
+                            FormatValue(c_arg >> 1),
+                        )
+                    else:
+                        arg = FormatValue(c_arg)
                 else:
                     arg = c_arg
 
@@ -1143,7 +1168,7 @@ def to_bytecode(
 
 
 class _ConvertBytecodeToConcrete:
-    # XXX document attributes
+    # FIXME document attributes
 
     #: Default number of passes of compute_jumps() before giving up.  Refer to
     #: assemble_jump_offsets() in compile.c for background.
@@ -1316,9 +1341,13 @@ def concrete_instructions(self) -> None:
                         isinstance(arg, tuple)
                         and len(arg) == 2
                         and isinstance(arg[0], bool)
-                        and isinstance(arg[1], str)
                     ), arg
-                    index = self.add(self.names, arg[1])
+                    if isinstance(arg[1], str):
+                        index = self.add(self.names, arg[1])
+                    elif isinstance(arg, FormatValue):
+                        index = int(arg)
+                    else:
+                        assert False, arg  # noqa
                     c_arg = int(arg[0]) + (index << 1)
                 elif opcode in BITFLAG2_OPCODES:
                     assert (

src/bytecode/flags.py

@@ -6,7 +6,7 @@
 import bytecode as _bytecode
 
 from .instr import DUAL_ARG_OPCODES, CellVar, FreeVar
-from .utils import PY311, PY312, PY313
+from .utils import PY311, PY312, PY313, PY314
 
 
 class CompilerFlags(IntFlag):
@@ -48,7 +48,7 @@ class CompilerFlags(IntFlag):
     _opcode.opmap["GET_AWAITABLE"],
     _opcode.opmap["GET_AITER"],
     _opcode.opmap["GET_ANEXT"],
-    _opcode.opmap["BEFORE_ASYNC_WITH"],
+    *((_opcode.opmap["BEFORE_ASYNC_WITH"],) if not PY314 else ()),  # Removed in 3.14+
     *((_opcode.opmap["SETUP_ASYNC_WITH"],) if not PY311 else ()),  # Removed in 3.11+
     _opcode.opmap["END_ASYNC_FOR"],
     *((_opcode.opmap["ASYNC_GEN_WRAP"],) if PY311 and not PY312 else ()),  # New in 3.11