Remove support for Python 3.7 and 3.8

Github actions forced our hand by dropping 3.7 itself, and 3.8 was announced to be removed in the next release.

Author: jamadden

.github/workflows/tests.yml

@@ -25,13 +25,11 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9, "3.10", "3.11", "3.12", "3.13"]
+        python-version: [3.9, "3.10", "3.11", "3.12", "3.13"]
         os: [ubuntu-latest]
         include:
           # Needs to be all supported Python versions, they upload the built
           # wheels for releases.
-          - os: macos-latest
-            python-version: 3.8
           - os: macos-latest
             python-version: 3.9
           - os: macos-latest

CHANGES.rst

@@ -2,10 +2,10 @@
  Changes
 =========
 
-3.1.2 (unreleased)
+3.2.0 (unreleased)
 ==================
 
-- Nothing changed yet.
+- Remove support for Python 3.7 and 3.8.
 
 
 3.1.1 (2024-09-20)

appveyor.yml

@@ -69,17 +69,6 @@ environment:
       PYTHON_EXE: python
 
 
-    - PYTHON: "C:\\Python38-x64"
-      PYTHON_ARCH: "64"
-      PYTHON_VERSION: "3.8.x"
-      PYTHON_EXE: python
-
-
-    - PYTHON: "C:\\Python37-x64"
-      PYTHON_ARCH: "64"
-      PYTHON_VERSION: "3.7.x"
-      PYTHON_EXE: python
-
 
     # Tested 32-bit versions. A small, hand-picked selection covering
     # important variations. No need to include newer versions of
@@ -100,17 +89,7 @@ environment:
     # Untested 32-bit versions. As above, we don't expect any variance
     # from the tested 32-bit versions, OR they are very EOL.
 
-    - PYTHON: "C:\\Python38"
-      PYTHON_ARCH: "32"
-      PYTHON_VERSION: "3.8.x"
-      PYTHON_EXE: python
-      GWHEEL_ONLY: true
-
-    - PYTHON: "C:\\Python37"
-      PYTHON_ARCH: "32"
-      PYTHON_VERSION: "3.7.x"
-      PYTHON_EXE: python
-      GWHEEL_ONLY: true
+    # None right now.
 
 
 

make-manylinux

@@ -35,7 +35,7 @@ if [ -d /greenlet -a -d /opt/python ]; then
     which auditwheel
     echo "Installed Python versions"
     ls -l /opt/python
-    for variant in `ls -d /opt/python/cp{313,37,38,39,310,311,312}*`; do
+    for variant in `ls -d /opt/python/cp{313,39,310,311,312}*`; do
         if [ "$variant" = "/opt/python/cp313-313t" ]; then
             echo "Skipping no-gil build. The GIL is required."
             continue

setup.py

@@ -241,8 +241,6 @@ def get_greenlet_version():
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3 :: Only',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
@@ -261,6 +259,6 @@ def get_greenlet_version():
             'psutil',
         ],
     },
-    python_requires=">=3.7",
+    python_requires=">=3.9",
     zip_safe=False,
 )

src/greenlet/TThreadStateDestroy.cpp

@@ -15,7 +15,6 @@
 #include "TGreenlet.hpp"
 
 #include "greenlet_thread_support.hpp"
-#include "greenlet_cpython_add_pending.hpp"
 #include "greenlet_compiler_compat.hpp"
 #include "TGreenletGlobals.cpp"
 #include "TThreadState.hpp"
@@ -168,47 +167,7 @@ struct ThreadState_DestroyNoGIL
         delete state; // Deleting this runs the destructor, DECREFs the main greenlet.
     }
 
-    // ensure this is actually defined.
-    static_assert(GREENLET_BROKEN_PY_ADD_PENDING == 1 || GREENLET_BROKEN_PY_ADD_PENDING == 0,
-                  "GREENLET_BROKEN_PY_ADD_PENDING not defined correctly.");
 
-#if GREENLET_BROKEN_PY_ADD_PENDING
-    static int _push_pending_call(struct _pending_calls *pending,
-                                  int (*func)(void *), void *arg)
-    {
-        int i = pending->last;
-        int j = (i + 1) % NPENDINGCALLS;
-        if (j == pending->first) {
-            return -1; /* Queue full */
-        }
-        pending->calls[i].func = func;
-        pending->calls[i].arg = arg;
-        pending->last = j;
-        return 0;
-    }
-
-    static int AddPendingCall(int (*func)(void *), void *arg)
-    {
-        _PyRuntimeState *runtime = &_PyRuntime;
-        if (!runtime) {
-            // obviously impossible
-            return 0;
-        }
-        struct _pending_calls *pending = &runtime->ceval.pending;
-        if (!pending->lock) {
-            return 0;
-        }
-        int result = 0;
-        PyThread_acquire_lock(pending->lock, WAIT_LOCK);
-        if (!pending->finishing) {
-            result = _push_pending_call(pending, func, arg);
-        }
-        PyThread_release_lock(pending->lock);
-        SIGNAL_PENDING_CALLS(&runtime->ceval);
-        return result;
-    }
-#else
-    // Python < 3.8 or >= 3.9
     static int AddPendingCall(int (*func)(void*), void* arg)
     {
         // If the interpreter is in the middle of finalizing, we can't add a
@@ -234,7 +193,7 @@ struct ThreadState_DestroyNoGIL
         }
         return Py_AddPendingCall(func, arg);
     }
-#endif
+