PYTHON-3347 Test against Python 3.11 prerelease (#1069)

.evergreen/build-mac.sh

@@ -9,6 +9,7 @@ mkdir -p validdist
 mv dist/* validdist || true
 
 VERSION=${VERSION:-3.10}
+
 PYTHON=/Library/Frameworks/Python.framework/Versions/$VERSION/bin/python3
 rm -rf build
 

.evergreen/build-manylinux-internal.sh

@@ -11,7 +11,7 @@ mv dist/* validdist || true
 
 # Compile wheels
 for PYTHON in /opt/python/*/bin/python; do
-    if [[ ! $PYTHON =~ (cp37|cp38|cp39|cp310) ]]; then
+    if [[ ! $PYTHON =~ (cp37|cp38|cp39|cp310|cp311) ]]; then
         continue
     fi
     # https://github.com/pypa/manylinux/issues/49

.evergreen/build-manylinux.sh

@@ -37,7 +37,8 @@ unexpected=$(find dist \! \( -iname dist -or \
                              -iname '*cp37*' -or \
                              -iname '*cp38*' -or \
                              -iname '*cp39*' -or \
-                             -iname '*cp310*' \))
+                             -iname '*cp310*' -or \
+                             -iname '*cp311*' \))
 if [ -n "$unexpected" ]; then
   echo "Unexpected files:" $unexpected
   exit 1

.evergreen/build-windows.sh

@@ -8,7 +8,7 @@ rm -rf validdist
 mkdir -p validdist
 mv dist/* validdist || true
 
-for VERSION in 37 38 39 310; do
+for VERSION in 37 38 39 310 311; do
     _pythons=("C:/Python/Python${VERSION}/python.exe" \
               "C:/Python/32/Python${VERSION}/python.exe")
     for PYTHON in "${_pythons[@]}"; do

.evergreen/config.yml

@@ -2080,6 +2080,10 @@ axes:
         display_name: "Python 3.10"
         variables:
           PYTHON_BINARY: "/opt/python/3.10/bin/python3"
+      - id: "3.11"
+        display_name: "Python 3.11"
+        variables:
+          PYTHON_BINARY: "/opt/python/3.11/bin/python3"
       - id: "pypy3.7"
         display_name: "PyPy 3.7"
         variables:
@@ -2116,6 +2120,10 @@ axes:
         display_name: "Python 3.10"
         variables:
           PYTHON_BINARY: "C:/python/Python310/python.exe"
+      - id: "3.11"
+        display_name: "Python 3.11"
+        variables:
+          PYTHON_BINARY: "C:/python/Python311/python.exe"
 
   - id: python-version-windows-32
     display_name: "Python"
@@ -2136,6 +2144,10 @@ axes:
         display_name: "32-bit Python 3.10"
         variables:
           PYTHON_BINARY: "C:/python/32/Python310/python.exe"
+      - id: "3.11"
+        display_name: "32-bit Python 3.11"
+        variables:
+          PYTHON_BINARY: "C:/python/32/Python311/python.exe"
 
   # Choice of mod_wsgi version
   - id: mod-wsgi-version

bson/codec_options.py

@@ -199,7 +199,7 @@ def __eq__(self, other: Any) -> Any:
         )
 
 
-class DatetimeConversion(enum.IntEnum):
+class DatetimeConversion(int, enum.Enum):
     """Options for decoding BSON datetimes."""
 
     DATETIME = 1

pymongo/topology_description.py

@@ -495,7 +495,7 @@ def _updated_topology_description_srv_polling(topology_description, seedlist):
         new_hosts = set(seedlist) - set(sds.keys())
         n_to_add = topology_description.srv_max_hosts - len(sds)
         if n_to_add > 0:
-            seedlist = sample(new_hosts, min(n_to_add, len(new_hosts)))
+            seedlist = sample(sorted(new_hosts), min(n_to_add, len(new_hosts)))
         else:
             seedlist = []
     # Add SDs corresponding to servers recently added to the SRV record.

setup.py

@@ -331,6 +331,7 @@ def build_extension(self, ext):
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: Implementation :: CPython",
         "Programming Language :: Python :: Implementation :: PyPy",
         "Topic :: Database",

test/test_client.py

@@ -1641,7 +1641,8 @@ def server_description_count():
             # If a bug like PYTHON-2433 is reintroduced then too many
             # ServerDescriptions will be kept alive and this test will fail:
             # AssertionError: 19 != 46 within 15 delta (27 difference)
-            self.assertAlmostEqual(initial_count, final_count, delta=15)
+            # On Python 3.11 we seem to get more of a delta.
+            self.assertAlmostEqual(initial_count, final_count, delta=20)
 
     @client_context.require_failCommand_fail_point
     def test_network_error_message(self):