Removed unused imports

Author: mmegs-amzn

src/aws_encryption_sdk/keyring/multi_keyring.py

@@ -20,6 +20,13 @@
 from aws_encryption_sdk.keyring.base import DecryptionMaterials, EncryptedDataKey, EncryptionMaterials, Keyring
 
 
+try:  # Python 3.5.0 and 3.5.1 have incompatible typing modules
+    from typing import Iterable  # noqa pylint: disable=unused-import
+except ImportError:  # pragma: no cover
+    # We only actually need these imports when running the mypy checks
+    pass
+
+
 @attr.s
 class MultiKeyring(Keyring):
     """Public class for Multi Keyring.

test/functional/test_f_multi_keyring.py

@@ -16,7 +16,7 @@
 from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives.asymmetric import rsa
 
-from aws_encryption_sdk.identifiers import Algorithm, KeyringTraceFlag, WrappingAlgorithm
+from aws_encryption_sdk.identifiers import KeyringTraceFlag, WrappingAlgorithm
 from aws_encryption_sdk.internal.defaults import ALGORITHM
 from aws_encryption_sdk.keyring.multi_keyring import MultiKeyring
 from aws_encryption_sdk.keyring.raw_keyring import RawAESKeyring, RawRSAKeyring

test/unit/test_keyring_multi.py

@@ -11,7 +11,6 @@
 # ANY KIND, either express or implied. See the License for the specific
 # language governing permissions and limitations under the License.
 """Unit tests for Multi keyring."""
-import itertools
 
 import pytest
 from mock import MagicMock

test/unit/unit_test_utils.py

@@ -26,6 +26,14 @@
 from aws_encryption_sdk.materials_managers import DecryptionMaterials, EncryptionMaterials
 from aws_encryption_sdk.structures import EncryptedDataKey, KeyringTrace, MasterKeyInfo, RawDataKey
 
+
+try:  # Python 3.5.0 and 3.5.1 have incompatible typing modules
+    from typing import Iterable  # noqa pylint: disable=unused-import
+except ImportError:  # pragma: no cover
+    # We only actually need these imports when running the mypy checks
+    pass
+
+
 _ENCRYPTION_CONTEXT = {"encryption": "context", "values": "here"}
 _PROVIDER_ID = "Random Raw Keys"
 _KEY_ID = b"5325b043-5843-4629-869c-64794af77ada"