#11857 test on py 3.12rc (#11910)

.github/workflows/test.yaml

@@ -69,7 +69,7 @@ jobs:
         # The Python version on which the job is executed.
         # We need at least one value here, so we go with latest Python version
         # that we support..
-        python-version: ['3.10']
+        python-version: ['3.11']
         # Just use the default OS.
         runs-on: ['']
         # Human readable short description for this job.
@@ -124,8 +124,11 @@ jobs:
           # Just Python 3.9 with default settings.
           - python-version: '3.9'
 
-          # Just Python 3.11 with default settings.
-          - python-version: '3.11'
+          # Just Python 3.10 with default settings.
+          - python-version: '3.10'
+
+          # Just Python 3.12 with default settings.
+          - python-version: '3.12'
 
           # Newest macOS and newest Python supported versions.
           - python-version: '3.11'
@@ -184,6 +187,7 @@ jobs:
       uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
 
     - name: Get pip cache dir
       id: pip-cache

pyproject.toml

@@ -28,6 +28,8 @@ classifiers = [
     "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",
 ]
 dependencies = [
     "zope.interface >= 5",

src/twisted/internet/defer.py

@@ -9,6 +9,7 @@
 """
 from __future__ import annotations
 
+import inspect
 import traceback
 import warnings
 from abc import ABC, abstractmethod
@@ -1341,8 +1342,10 @@ def main(reactor):
 
         @raise ValueError: If C{coro} is not a coroutine or generator.
         """
-        # asyncio.iscoroutine identifies generators as coroutines, too.
-        if iscoroutine(coro):
+        # asyncio.iscoroutine <3.12 identifies generators as coroutines, too.
+        # for >=3.12 we need to check isgenerator also
+        # see https://github.com/python/cpython/issues/102748
+        if iscoroutine(coro) or inspect.isgenerator(coro):
             return _cancellableInlineCallbacks(coro)
         raise NotACoroutineError(f"{coro!r} is not a coroutine")
 

src/twisted/newsfragments/11857.feature

@@ -0,0 +1 @@
+The CI suite was updated to execute the tests using a Python 3.12 pre-release

src/twisted/newsfragments/11908.bugfix

@@ -0,0 +1,2 @@
+utcfromtimestamp has been deprecated since Python 3.12,
+use fromtimestamp(x, timezone.utc).replace(tzinfo=None) instead.

src/twisted/persisted/_token.py

@@ -0,0 +1,150 @@
+"""
+FIXME:https://github.com/twisted/twisted/issues/3843
+This can be removed once t.persisted.aot is removed.
+New code should not make use of this.
+
+Token constants.
+vendored from https://github.com/python/cpython/blob/6b825c1b8a14460641ca6f1647d83005c68199aa/Lib/token.py
+Licence: https://docs.python.org/3/license.html
+"""
+# Auto-generated by Tools/scripts/generate_token.py
+
+__all__ = ["tok_name", "ISTERMINAL", "ISNONTERMINAL", "ISEOF"]
+
+ENDMARKER = 0
+NAME = 1
+NUMBER = 2
+STRING = 3
+NEWLINE = 4
+INDENT = 5
+DEDENT = 6
+LPAR = 7
+RPAR = 8
+LSQB = 9
+RSQB = 10
+COLON = 11
+COMMA = 12
+SEMI = 13
+PLUS = 14
+MINUS = 15
+STAR = 16
+SLASH = 17
+VBAR = 18
+AMPER = 19
+LESS = 20
+GREATER = 21
+EQUAL = 22
+DOT = 23
+PERCENT = 24
+LBRACE = 25
+RBRACE = 26
+EQEQUAL = 27
+NOTEQUAL = 28
+LESSEQUAL = 29
+GREATEREQUAL = 30
+TILDE = 31
+CIRCUMFLEX = 32
+LEFTSHIFT = 33
+RIGHTSHIFT = 34
+DOUBLESTAR = 35
+PLUSEQUAL = 36
+MINEQUAL = 37
+STAREQUAL = 38
+SLASHEQUAL = 39
+PERCENTEQUAL = 40
+AMPEREQUAL = 41
+VBAREQUAL = 42
+CIRCUMFLEXEQUAL = 43
+LEFTSHIFTEQUAL = 44
+RIGHTSHIFTEQUAL = 45
+DOUBLESTAREQUAL = 46
+DOUBLESLASH = 47
+DOUBLESLASHEQUAL = 48
+AT = 49
+ATEQUAL = 50
+RARROW = 51
+ELLIPSIS = 52
+COLONEQUAL = 53
+OP = 54
+AWAIT = 55
+ASYNC = 56
+TYPE_IGNORE = 57
+TYPE_COMMENT = 58
+SOFT_KEYWORD = 59
+# These aren't used by the C tokenizer but are needed for tokenize.py
+ERRORTOKEN = 60
+COMMENT = 61
+NL = 62
+ENCODING = 63
+N_TOKENS = 64
+# Special definitions for cooperation with parser
+NT_OFFSET = 256
+
+tok_name = {
+    value: name
+    for name, value in globals().items()
+    if isinstance(value, int) and not name.startswith("_")
+}
+__all__.extend(tok_name.values())
+
+EXACT_TOKEN_TYPES = {
+    "!=": NOTEQUAL,
+    "%": PERCENT,
+    "%=": PERCENTEQUAL,
+    "&": AMPER,
+    "&=": AMPEREQUAL,
+    "(": LPAR,
+    ")": RPAR,
+    "*": STAR,
+    "**": DOUBLESTAR,
+    "**=": DOUBLESTAREQUAL,
+    "*=": STAREQUAL,
+    "+": PLUS,
+    "+=": PLUSEQUAL,
+    ",": COMMA,
+    "-": MINUS,
+    "-=": MINEQUAL,
+    "->": RARROW,
+    ".": DOT,
+    "...": ELLIPSIS,
+    "/": SLASH,
+    "//": DOUBLESLASH,
+    "//=": DOUBLESLASHEQUAL,
+    "/=": SLASHEQUAL,
+    ":": COLON,
+    ":=": COLONEQUAL,
+    ";": SEMI,
+    "<": LESS,
+    "<<": LEFTSHIFT,
+    "<<=": LEFTSHIFTEQUAL,
+    "<=": LESSEQUAL,
+    "=": EQUAL,
+    "==": EQEQUAL,
+    ">": GREATER,
+    ">=": GREATEREQUAL,
+    ">>": RIGHTSHIFT,
+    ">>=": RIGHTSHIFTEQUAL,
+    "@": AT,
+    "@=": ATEQUAL,
+    "[": LSQB,
+    "]": RSQB,
+    "^": CIRCUMFLEX,
+    "^=": CIRCUMFLEXEQUAL,
+    "{": LBRACE,
+    "|": VBAR,
+    "|=": VBAREQUAL,
+    "}": RBRACE,
+    "~": TILDE,
+}
+
+
+def ISTERMINAL(x):
+    return x < NT_OFFSET
+
+
+def ISNONTERMINAL(x):
+    return x >= NT_OFFSET
+
+
+def ISEOF(x):
+    return x == ENDMARKER