Python: Fix warnings from PyLint

Because TestType contains test in the name,
pytest tries to collect it and run tests on it.
Setting `__test__ = False` tells PyTest to ignore it

Also, s3 emits an error because we clean up buckets that
still has content in it, so I've added some code to clean them
up after we use the bucket.

python/pyproject.toml

@@ -109,6 +109,10 @@ markers = [
     "s3: marks a test as requiring access to s3 compliant storage (use with --aws-access-key-id, --aws-secret-access-key, and --endpoint-url args)",
     "adlfs: marks a test as requiring access to adlfs compliant storage (use with --adlfs.account-name, --adlfs.account-key, and --adlfs.endpoint args)"
 ]
+# Turns an warning into an error
+filterwarnings = [
+    "error"
+]
 
 [tool.black]
 line-length = 130

python/release-announcement-email.txt

@@ -0,0 +1,32 @@
+To: dev@iceberg.apache.org
+Subject: [VOTE] Release Apache PyIceberg 
+Hi Everyone,
+
+I propose that we release the following RC as the official PyIceberg  release.
+
+The commit ID is 
+
+* This corresponds to the tag:  ()
+* https://github.com/apache/iceberg/releases/tag/
+* https://github.com/apache/iceberg/tree/
+
+The release tarball, signature, and checksums are here:
+
+* https://dist.apache.org/repos/dist/dev/iceberg/pyiceberg-/
+
+You can find the KEYS file here:
+
+* https://dist.apache.org/repos/dist/dev/iceberg/KEYS
+
+Convenience binary artifacts are staged on pypi:
+
+https://pypi.org/project/pyiceberg//
+
+And can be installed using: pip3 install pyiceberg==
+
+Please download, verify, and test.
+
+Please vote in the next 72 hours.
+[ ] +1 Release this as PyIceberg 
+[ ] +0
+[ ] -1 Do not release this because...

python/tests/catalog/test_glue.py

@@ -67,7 +67,18 @@ def get_random_databases(n: int) -> Set[str]:
 
 @pytest.fixture(name="_bucket_initialize")
 def fixture_s3_bucket(_s3) -> None:  # type: ignore
-    _s3.create_bucket(Bucket=BUCKET_NAME)
+    bucket = _s3.create_bucket(Bucket=BUCKET_NAME)
+    yield bucket
+
+    response = _s3.list_objects_v2(
+        Bucket=BUCKET_NAME,
+    )
+    while response["KeyCount"] > 0:
+        _s3.delete_objects(Bucket=BUCKET_NAME, Delete={"Objects": [{"Key": obj["Key"]} for obj in response["Contents"]]})
+        response = _s3.list_objects_v2(
+            Bucket=BUCKET_NAME,
+        )
+    _s3.delete_bucket(Bucket=BUCKET_NAME)
 
 
 @mock_glue

python/tests/test_transforms.py

@@ -422,6 +422,7 @@ def test_void_transform() -> None:
 
 class TestType(IcebergBaseModel):
     __root__: Transform[Any, Any]
+    __test__ = False
 
 
 def test_bucket_transform_serialize() -> None: