Drop support for Python 2.6 and 3.3

.changes/next-release/feature-Python-68860.json

@@ -0,0 +1,5 @@
+{
+  "type": "feature",
+  "category": "Python",
+  "description": "Dropped support for Python 2.6 and 3.3."
+}

.travis.yml

@@ -2,15 +2,9 @@ language: python
 
 matrix:
   include:
-    - python: 2.6
-      dist: trusty
-      sudo: false
     - python: 2.7
       dist: trusty
       sudo: false
-    - python: 3.3
-      dist: trusty
-      sudo: false
     - python: 3.4
       dist: trusty
       sudo: false

requirements-test.txt

@@ -3,6 +3,3 @@ nose==1.3.3
 mock==1.3.0
 coverage==4.0.1
 wheel==0.24.0
-# Note you need at least pip --version of 6.0 or
-# higher to be able to pick on these version specifiers.
-unittest2==0.5.1; python_version == '2.6'

s3transfer/compat.py

@@ -98,76 +98,4 @@ def fallocate(fileobj, size):
         fileobj.truncate(size)
 
 
-if sys.version_info[:2] == (2, 6):
-    # For Python 2.6, the start() method does not accept initializers.
-    # So we backport the functionality. This is strictly a copy from the
-    # Python 2.7 version.
-    import multiprocessing
-    import multiprocessing.managers
-    import multiprocessing.connection
-    import multiprocessing.util
-
-
-    class BaseManager(multiprocessing.managers.BaseManager):
-        def start(self, initializer=None, initargs=()):
-            '''
-            Spawn a server process for this manager object
-            '''
-            assert self._state.value == multiprocessing.managers.State.INITIAL
-
-            if initializer is not None and not hasattr(initializer,
-                                                       '__call__'):
-                raise TypeError('initializer must be a callable')
-
-            # pipe over which we will retrieve address of server
-            reader, writer = multiprocessing.Pipe(duplex=False)
-
-            # spawn process which runs a server
-            self._process = multiprocessing.Process(
-                target=type(self)._run_server,
-                args=(self._registry, self._address, self._authkey,
-                      self._serializer, writer, initializer, initargs),
-            )
-            ident = ':'.join(str(i) for i in self._process._identity)
-            self._process.name = type(self).__name__ + '-' + ident
-            self._process.start()
-
-            # get address of server
-            writer.close()
-            self._address = reader.recv()
-            reader.close()
-
-            # register a finalizer
-            self._state.value = multiprocessing.managers.State.STARTED
-            self.shutdown = multiprocessing.util.Finalize(
-                self, type(self)._finalize_manager,
-                args=(self._process, self._address, self._authkey,
-                      self._state, self._Client),
-                exitpriority=0
-            )
-
-        @classmethod
-        def _run_server(cls, registry, address, authkey, serializer,
-                        writer,
-                        initializer=None, initargs=()):
-            '''
-            Create a server, report its address and run it
-            '''
-            if initializer is not None:
-                initializer(*initargs)
-
-            # create server
-            server = cls._Server(registry, address, authkey, serializer)
-
-            # inform parent process of the server's address
-            writer.send(server.address)
-            writer.close()
-
-            # run the manager
-            multiprocessing.util.info('manager serving at %r', server.address)
-
-            server.serve_forever()
-
-
-else:
-    from multiprocessing.managers import BaseManager
+from multiprocessing.managers import BaseManager

setup.cfg

@@ -4,4 +4,4 @@ universal = 1
 [metadata]
 requires-dist =
 	botocore>=1.12.36,<2.0.0
-	futures>=2.2.0,<4.0.0; python_version=="2.6" or python_version=="2.7"
+	futures>=2.2.0,<4.0.0; python_version=="2.7"

setup.py

@@ -38,7 +38,7 @@ def get_version():
     include_package_data=True,
     install_requires=requires,
     extras_require={
-        ':python_version=="2.6" or python_version=="2.7"': [
+        ':python_version=="2.7"': [
             'futures>=2.2.0,<4.0.0']
     },
     license="Apache License 2.0",
@@ -48,10 +48,8 @@ def get_version():
         'Natural Language :: English',
         'License :: OSI Approved :: Apache Software License',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',