MTN drop support for python 3.7

.azure_pipeline.yml

@@ -61,10 +61,6 @@ jobs:
         imageName: "ubuntu-latest"
         python.version: "3.8"
         tox.env: py38
-      linux-py37:
-        imageName: "ubuntu-latest"
-        python.version: "3.7"
-        tox.env: py37
 
   pool:
     vmImage: $(imageName)
@@ -78,15 +74,15 @@ jobs:
       displayName: 'Use Python $(python.version)'
       condition: ne(variables['python.version'], 'pypy3')
     - bash: |
-        wget -q https://downloads.python.org/pypy/pypy3.7-v7.3.7-linux64.tar.bz2 -O pypy.tar.bz2
+        wget -q https://downloads.python.org/pypy/pypy3.10-v7.3.12-linux64.tar.bz2 -O pypy.tar.bz2
         mkdir -p pypy3
         (cd pypy3; tar --strip-components=1 -xf ../pypy.tar.bz2)
         mv pypy3 /opt/pypy37
         /opt/pypy37/bin/pypy3 -m ensurepip
         /opt/pypy37/bin/pypy3 -m pip install --upgrade pip wheel
         /opt/pypy37/bin/pypy3 -m venv pypy-venv
         echo "##vso[task.prependpath]pypy-venv/bin"
-      displayName: 'Install PyPy 3.7'
+      displayName: 'Install PyPy 3.10'
       condition: eq(variables['python.version'], 'pypy3')
     # azure-pipelines unpredictably switches between Git\bin\bash and
     # Git\usr\bin\bash when running a bash script inside Windows environments.

CHANGES.md

@@ -1,5 +1,6 @@
 ### 3.5.0 - in development
 
+- Drop support for python3.7. (#409)
 
 ### 3.4.1 - 2023-06-29
 

loky/backend/context.py

@@ -18,20 +18,15 @@
 import multiprocessing as mp
 from multiprocessing import get_context as mp_get_context
 from multiprocessing.context import BaseContext
+from concurrent.futures.process import _MAX_WINDOWS_WORKERS
 
 
 from .process import LokyProcess, LokyInitMainProcess
 
 # Apparently, on older Python versions, loky cannot work 61 workers on Windows
 # but instead 60: ¯\_(ツ)_/¯
-if sys.version_info >= (3, 8):
-    from concurrent.futures.process import _MAX_WINDOWS_WORKERS
-
-    if sys.version_info < (3, 10):
-        _MAX_WINDOWS_WORKERS = _MAX_WINDOWS_WORKERS - 1
-else:
-    # compat for versions before 3.8 which do not define this.
-    _MAX_WINDOWS_WORKERS = 60
+if sys.version_info < (3, 10):
+    _MAX_WINDOWS_WORKERS = _MAX_WINDOWS_WORKERS - 1
 
 START_METHODS = ["loky", "loky_init_main", "spawn"]
 if sys.platform != "win32":

setup.py

@@ -75,17 +75,17 @@ def run(self):
         "License :: OSI Approved :: BSD License",
         "Operating System :: OS Independent",
         "Programming Language :: Python :: 3",
-        "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",
         "Topic :: Scientific/Engineering",
         "Topic :: Utilities",
         "Topic :: Software Development :: Libraries",
     ],
     cmdclass=cmdclass,
     platforms="any",
-    python_requires=">=3.7",
+    python_requires=">=3.8",
     install_requires=["cloudpickle"],
     tests_require=["packaging", "pytest", "psutil"],
 )

tox.ini

@@ -15,7 +15,7 @@ deps =
      pytest-timeout
      psutil ; python_version != '3.8'
      coverage
-     viztracer ; python_version >= '3.8' and python_version <= '3.10'
+     viztracer ; implementation_name == 'cpython' and python_version >= '3.9' and python_version <= '3.10'
      numpy ; implementation_name == 'cpython'
      tblib
 whitelist_externals=