Merge branch '2.4'

18 files changed, 38 insertions, 142 deletions

diff --git a/tests/stub_sftp.py b/tests/stub_sftp.py
index ffae635d..100076d6 100644
--- a/tests/stub_sftp.py
+++ b/tests/stub_sftp.py
@@ -38,7 +38,6 @@ from paramiko.common import o666
 
 
 class StubServer(ServerInterface):
-
     def check_auth_password(self, username, password):
         # all are allowed
         return AUTH_SUCCESSFUL
@@ -48,7 +47,6 @@ class StubServer(ServerInterface):
 
 
 class StubSFTPHandle(SFTPHandle):
-
     def stat(self):
         try:
             return SFTPAttributes.from_stat(os.fstat(self.readfile.fileno()))
diff --git a/tests/test_auth.py b/tests/test_auth.py
index acabb1bd..d98a00c4 100644
--- a/tests/test_auth.py
+++ b/tests/test_auth.py
@@ -115,7 +115,6 @@ class NullServer(ServerInterface):
 
 
 class AuthTest(unittest.TestCase):
-
     def setUp(self):
         self.socks = LoopSocket()
         self.sockc = LoopSocket()
diff --git a/tests/test_buffered_pipe.py b/tests/test_buffered_pipe.py
index 9f986a5e..28d6e4a2 100644
--- a/tests/test_buffered_pipe.py
+++ b/tests/test_buffered_pipe.py
@@ -42,7 +42,6 @@ def close_thread(p):
 
 
 class BufferedPipeTest(unittest.TestCase):
-
     def test_1_buffered_pipe(self):
         p = BufferedPipe()
         self.assertTrue(not p.read_ready())
diff --git a/tests/test_client.py b/tests/test_client.py
index 4943df29..80b28adf 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -56,7 +56,6 @@ FINGERPRINTS = {
 
 
 class NullServer(paramiko.ServerInterface):
-
     def __init__(self, *args, **kwargs):
         # Allow tests to enable/disable specific key types
         self.__allowed_keys = kwargs.pop("allowed_keys", [])
@@ -115,7 +114,6 @@ class NullServer(paramiko.ServerInterface):
 
 
 class ClientTest(unittest.TestCase):
-
     def setUp(self):
         self.sockl = socket.socket()
         self.sockl.bind(("localhost", 0))
@@ -230,7 +228,6 @@ class ClientTest(unittest.TestCase):
 
 
 class SSHClientTest(ClientTest):
-
     def test_1_client(self):
         """
         verify that the SSHClient stuff works too.
diff --git a/tests/test_file.py b/tests/test_file.py
index deacd60a..fba14b1b 100644
--- a/tests/test_file.py
+++ b/tests/test_file.py
@@ -52,7 +52,6 @@ class LoopbackFile(BufferedFile):
 
 
 class BufferedFileTest(unittest.TestCase):
-
     def test_1_simple(self):
         f = LoopbackFile("r")
         try:
diff --git a/tests/test_gssapi.py b/tests/test_gssapi.py
index d7fbdd53..3e8c39e8 100644
--- a/tests/test_gssapi.py
+++ b/tests/test_gssapi.py
@@ -30,7 +30,6 @@ from .util import needs_gssapi
 
 @needs_gssapi
 class GSSAPITest(unittest.TestCase):
-
     def setup():
         # TODO: these vars should all come from os.environ or whatever the
         # approved pytest method is for runtime-configuring test data.
diff --git a/tests/test_hostkeys.py b/tests/test_hostkeys.py
index a1b7a9e0..295153dd 100644
--- a/tests/test_hostkeys.py
+++ b/tests/test_hostkeys.py
@@ -55,7 +55,6 @@ Ngw3qIch/WgRmMHy4kBq1SsXMjQCte1So6HBMvBPIW5SiMTmjCfZZiw4AYHK+B/JaOwaG9yRg2Ejg\
 
 
 class HostKeysTest(unittest.TestCase):
-
     def setUp(self):
         with open("hostfile.temp", "w") as f:
             f.write(test_hosts_file)
diff --git a/tests/test_kex.py b/tests/test_kex.py
index 13d19d86..62512beb 100644
--- a/tests/test_kex.py
+++ b/tests/test_kex.py
@@ -40,12 +40,8 @@ def dummy_urandom(n):
 
 
 def dummy_generate_key_pair(obj):
-    private_key_value = (
-        94761803665136558137557783047955027733968423115106677159790289642479432803037
-    )
-    public_key_numbers = (
-        "042bdab212fa8ba1b7c843301682a4db424d307246c7e1e6083c41d9ca7b098bf30b3d63e2ec6278488c135360456cc054b3444ecc45998c08894cbc1370f5f989"
-    )
+    private_key_value = 94761803665136558137557783047955027733968423115106677159790289642479432803037
+    public_key_numbers = "042bdab212fa8ba1b7c843301682a4db424d307246c7e1e6083c41d9ca7b098bf30b3d63e2ec6278488c135360456cc054b3444ecc45998c08894cbc1370f5f989"
     public_key_numbers_obj = ec.EllipticCurvePublicNumbers.from_encoded_point(
         ec.SECP256R1(), unhexlify(public_key_numbers)
     )
@@ -63,7 +59,6 @@ def dummy_generate_key_pair(obj):
 
 
 class FakeKey(object):
-
     def __str__(self):
         return "fake-key"
 
@@ -75,9 +70,7 @@ class FakeKey(object):
 
 
 class FakeModulusPack(object):
-    P = (
-        0xFFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF
-    )
+    P = 0xFFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF
     G = 2
 
     def get_modulus(self, min, ask, max):
@@ -118,9 +111,7 @@ class FakeTransport(object):
 
 class KexTest(unittest.TestCase):
 
-    K = (
-        14730343317708716439807310032871972459448364195094179797249681733965528989482751523943515690110179031004049109375612685505881911274101441415545039654102474376472240501616988799699744135291070488314748284283496055223852115360852283821334858541043710301057312858051901453919067023103730011648890038847384890504
-    )
+    K = 14730343317708716439807310032871972459448364195094179797249681733965528989482751523943515690110179031004049109375612685505881911274101441415545039654102474376472240501616988799699744135291070488314748284283496055223852115360852283821334858541043710301057312858051901453919067023103730011648890038847384890504
 
     def setUp(self):
         self._original_urandom = os.urandom
@@ -137,9 +128,7 @@ class KexTest(unittest.TestCase):
         transport.server_mode = False
         kex = KexGroup1(transport)
         kex.start_kex()
-        x = (
-            b"1E000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
-        )
+        x = b"1E000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertEqual(
             (paramiko.kex_group1._MSG_KEXDH_REPLY,), transport._expect
@@ -172,9 +161,7 @@ class KexTest(unittest.TestCase):
         msg.rewind()
         kex.parse_next(paramiko.kex_group1._MSG_KEXDH_INIT, msg)
         H = b"B16BF34DD10945EDE84E9C1EF24A14BFDC843389"
-        x = (
-            b"1F0000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
-        )
+        x = b"1F0000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
         self.assertEqual(self.K, transport._K)
         self.assertEqual(H, hexlify(transport._H).upper())
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
@@ -196,9 +183,7 @@ class KexTest(unittest.TestCase):
         msg.add_mpint(FakeModulusPack.G)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_GROUP, msg)
-        x = (
-            b"20000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
-        )
+        x = b"20000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertEqual(
             (paramiko.kex_gex._MSG_KEXDH_GEX_REPLY,), transport._expect
@@ -232,9 +217,7 @@ class KexTest(unittest.TestCase):
         msg.add_mpint(FakeModulusPack.G)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_GROUP, msg)
-        x = (
-            b"20000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
-        )
+        x = b"20000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertEqual(
             (paramiko.kex_gex._MSG_KEXDH_GEX_REPLY,), transport._expect
@@ -271,9 +254,7 @@ class KexTest(unittest.TestCase):
         msg.add_int(4096)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_REQUEST, msg)
-        x = (
-            b"1F0000008100FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF0000000102"
-        )
+        x = b"1F0000008100FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF0000000102"
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertEqual(
             (paramiko.kex_gex._MSG_KEXDH_GEX_INIT,), transport._expect
@@ -283,13 +264,9 @@ class KexTest(unittest.TestCase):
         msg.add_mpint(12345)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_INIT, msg)
-        K = (
-            67592995013596137876033460028393339951879041140378510871612128162185209509220726296697886624612526735888348020498716482757677848959420073720160491114319163078862905400020959196386947926388406687288901564192071077389283980347784184487280885335302632305026248574716290537036069329724382811853044654824945750581
-        )
+        K = 67592995013596137876033460028393339951879041140378510871612128162185209509220726296697886624612526735888348020498716482757677848959420073720160491114319163078862905400020959196386947926388406687288901564192071077389283980347784184487280885335302632305026248574716290537036069329724382811853044654824945750581
         H = b"CE754197C21BF3452863B4F44D0B3951F12516EF"
-        x = (
-            b"210000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
-        )
+        x = b"210000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
         self.assertEqual(K, transport._K)
         self.assertEqual(H, hexlify(transport._H).upper())
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
@@ -312,9 +289,7 @@ class KexTest(unittest.TestCase):
         msg.add_int(2048)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_REQUEST_OLD, msg)
-        x = (
-            b"1F0000008100FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF0000000102"
-        )
+        x = b"1F0000008100FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF0000000102"
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertEqual(
             (paramiko.kex_gex._MSG_KEXDH_GEX_INIT,), transport._expect
@@ -324,13 +299,9 @@ class KexTest(unittest.TestCase):
         msg.add_mpint(12345)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_INIT, msg)
-        K = (
-            67592995013596137876033460028393339951879041140378510871612128162185209509220726296697886624612526735888348020498716482757677848959420073720160491114319163078862905400020959196386947926388406687288901564192071077389283980347784184487280885335302632305026248574716290537036069329724382811853044654824945750581
-        )
+        K = 67592995013596137876033460028393339951879041140378510871612128162185209509220726296697886624612526735888348020498716482757677848959420073720160491114319163078862905400020959196386947926388406687288901564192071077389283980347784184487280885335302632305026248574716290537036069329724382811853044654824945750581
         H = b"B41A06B2E59043CEFC1AE16EC31F1E2D12EC455B"
-        x = (
-            b"210000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
-        )
+        x = b"210000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
         self.assertEqual(K, transport._K)
         self.assertEqual(H, hexlify(transport._H).upper())
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
@@ -352,9 +323,7 @@ class KexTest(unittest.TestCase):
         msg.add_mpint(FakeModulusPack.G)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_GROUP, msg)
-        x = (
-            b"20000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
-        )
+        x = b"20000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertEqual(
             (paramiko.kex_gex._MSG_KEXDH_GEX_REPLY,), transport._expect
@@ -388,9 +357,7 @@ class KexTest(unittest.TestCase):
         msg.add_mpint(FakeModulusPack.G)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_GROUP, msg)
-        x = (
-            b"20000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
-        )
+        x = b"20000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4"
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertEqual(
             (paramiko.kex_gex._MSG_KEXDH_GEX_REPLY,), transport._expect
@@ -427,9 +394,7 @@ class KexTest(unittest.TestCase):
         msg.add_int(4096)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_REQUEST, msg)
-        x = (
-            b"1F0000008100FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF0000000102"
-        )
+        x = b"1F0000008100FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF0000000102"
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertEqual(
             (paramiko.kex_gex._MSG_KEXDH_GEX_INIT,), transport._expect
@@ -439,13 +404,9 @@ class KexTest(unittest.TestCase):
         msg.add_mpint(12345)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_INIT, msg)
-        K = (
-            67592995013596137876033460028393339951879041140378510871612128162185209509220726296697886624612526735888348020498716482757677848959420073720160491114319163078862905400020959196386947926388406687288901564192071077389283980347784184487280885335302632305026248574716290537036069329724382811853044654824945750581
-        )
+        K = 67592995013596137876033460028393339951879041140378510871612128162185209509220726296697886624612526735888348020498716482757677848959420073720160491114319163078862905400020959196386947926388406687288901564192071077389283980347784184487280885335302632305026248574716290537036069329724382811853044654824945750581
         H = b"CCAC0497CF0ABA1DBF55E1A3995D17F4CC31824B0E8D95CDF8A06F169D050D80"
-        x = (
-            b"210000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
-        )
+        x = b"210000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
         self.assertEqual(K, transport._K)
         self.assertEqual(H, hexlify(transport._H).upper())
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
@@ -468,9 +429,7 @@ class KexTest(unittest.TestCase):
         msg.add_int(2048)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_REQUEST_OLD, msg)
-        x = (
-            b"1F0000008100FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF0000000102"
-        )
+        x = b"1F0000008100FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF0000000102"
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertEqual(
             (paramiko.kex_gex._MSG_KEXDH_GEX_INIT,), transport._expect
@@ -480,22 +439,16 @@ class KexTest(unittest.TestCase):
         msg.add_mpint(12345)
         msg.rewind()
         kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_INIT, msg)
-        K = (
-            67592995013596137876033460028393339951879041140378510871612128162185209509220726296697886624612526735888348020498716482757677848959420073720160491114319163078862905400020959196386947926388406687288901564192071077389283980347784184487280885335302632305026248574716290537036069329724382811853044654824945750581
-        )
+        K = 67592995013596137876033460028393339951879041140378510871612128162185209509220726296697886624612526735888348020498716482757677848959420073720160491114319163078862905400020959196386947926388406687288901564192071077389283980347784184487280885335302632305026248574716290537036069329724382811853044654824945750581
         H = b"3DDD2AD840AD095E397BA4D0573972DC60F6461FD38A187CACA6615A5BC8ADBB"
-        x = (
-            b"210000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
-        )
+        x = b"210000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967"
         self.assertEqual(K, transport._K)
         self.assertEqual(H, hexlify(transport._H).upper())
         self.assertEqual(x, hexlify(transport._message.asbytes()).upper())
         self.assertTrue(transport._activated)
 
     def test_11_kex_nistp256_client(self):
-        K = (
-            91610929826364598472338906427792435253694642563583721654249504912114314269754
-        )
+        K = 91610929826364598472338906427792435253694642563583721654249504912114314269754
         transport = FakeTransport()
         transport.server_mode = False
         kex = KexNistp256(transport)
@@ -521,9 +474,7 @@ class KexTest(unittest.TestCase):
         self.assertTrue(transport._activated)
 
     def test_12_kex_nistp256_server(self):
-        K = (
-            91610929826364598472338906427792435253694642563583721654249504912114314269754
-        )
+        K = 91610929826364598472338906427792435253694642563583721654249504912114314269754
         transport = FakeTransport()
         transport.server_mode = True
         kex = KexNistp256(transport)
diff --git a/tests/test_kex_gss.py b/tests/test_kex_gss.py
index afddee08..c71ff91c 100644
--- a/tests/test_kex_gss.py
+++ b/tests/test_kex_gss.py
@@ -35,7 +35,6 @@ from .util import needs_gssapi
 
 
 class NullServer(paramiko.ServerInterface):
-
     def get_allowed_auths(self, username):
         return "gssapi-keyex"
 
@@ -61,7 +60,6 @@ class NullServer(paramiko.ServerInterface):
 
 @needs_gssapi
 class GSSKexTest(unittest.TestCase):
-
     @staticmethod
     def init(username, hostname):
         global krb5_principal, targ_name
diff --git a/tests/test_message.py b/tests/test_message.py
index c292f4e6..b843a705 100644
--- a/tests/test_message.py
+++ b/tests/test_message.py
@@ -32,15 +32,9 @@ class MessageTest(unittest.TestCase):
         b"\x00\x00\x00\x17\x07\x60\xe0\x90\x00\x00\x00\x01\x71\x00\x00\x00\x05\x68\x65\x6c\x6c\x6f\x00\x00\x03\xe8"
         + b"x" * 1000
     )
-    __b = (
-        b"\x01\x00\xf3\x00\x3f\x00\x00\x00\x10\x68\x75\x65\x79\x2c\x64\x65\x77\x65\x79\x2c\x6c\x6f\x75\x69\x65"
-    )
-    __c = (
-        b"\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\xf5\xe4\xd3\xc2\xb1\x09\x00\x00\x00\x01\x11\x00\x00\x00\x07\x00\xf5\xe4\xd3\xc2\xb1\x09\x00\x00\x00\x06\x9a\x1b\x2c\x3d\x4e\xf7"
-    )
-    __d = (
-        b"\x00\x00\x00\x05\xff\x00\x00\x00\x05\x11\x22\x33\x44\x55\xff\x00\x00\x00\x0a\x00\xf0\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x03\x63\x61\x74\x00\x00\x00\x03\x61\x2c\x62"
-    )
+    __b = b"\x01\x00\xf3\x00\x3f\x00\x00\x00\x10\x68\x75\x65\x79\x2c\x64\x65\x77\x65\x79\x2c\x6c\x6f\x75\x69\x65"
+    __c = b"\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\xf5\xe4\xd3\xc2\xb1\x09\x00\x00\x00\x01\x11\x00\x00\x00\x07\x00\xf5\xe4\xd3\xc2\xb1\x09\x00\x00\x00\x06\x9a\x1b\x2c\x3d\x4e\xf7"
+    __d = b"\x00\x00\x00\x05\xff\x00\x00\x00\x05\x11\x22\x33\x44\x55\xff\x00\x00\x00\x0a\x00\xf0\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x03\x63\x61\x74\x00\x00\x00\x03\x61\x2c\x62"
 
     def test_1_encode(self):
         msg = Message()
diff --git a/tests/test_packetizer.py b/tests/test_packetizer.py
index dbe5993e..6920f08e 100644
--- a/tests/test_packetizer.py
+++ b/tests/test_packetizer.py
@@ -38,7 +38,6 @@ x1f = byte_chr(0x1f)
 
 
 class PacketizerTest(unittest.TestCase):
-
     def test_1_write(self):
         rsock = LoopSocket()
         wsock = LoopSocket()
@@ -121,7 +120,6 @@ class PacketizerTest(unittest.TestCase):
         import signal
 
         class TimeoutError(Exception):
-
             def __init__(self, error_message):
                 if hasattr(errno, "ETIME"):
                     self.message = os.sterror(errno.ETIME)
@@ -129,9 +127,7 @@ class PacketizerTest(unittest.TestCase):
                     self.messaage = error_message
 
         def timeout(seconds=1, error_message="Timer expired"):
-
             def decorator(func):
-
                 def _handle_timeout(signum, frame):
                     raise TimeoutError(error_message)
 
diff --git a/tests/test_pkey.py b/tests/test_pkey.py
index 4bbfaba1..08d38e3b 100644
--- a/tests/test_pkey.py
+++ b/tests/test_pkey.py
@@ -34,30 +34,18 @@ from .util import _support
 
 
 # from openssh's ssh-keygen
-PUB_RSA = (
-    "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEA049W6geFpmsljTwfvI1UmKWWJPNFI74+vNKTk4dmzkQY2yAMs6FhlvhlI8ysU4oj71ZsRYMecHbBbxdN79+JRFVYTKaLqjwGENeTd+yv4q+V2PvZv3fLnzApI3l7EJCqhWwJUHJ1jAkZzqDx0tyOL4uoZpww3nmE0kb3y21tH4c="
-)
-PUB_DSS = (
-    "ssh-dss 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"
-)
-PUB_ECDSA_256 = (
-    "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJSPZm3ZWkvk/Zx8WP+fZRZ5/NBBHnGQwR6uIC6XHGPDIHuWUzIjAwA0bzqkOUffEsbLe+uQgKl5kbc/L8KA/eo="
-)
-PUB_ECDSA_384 = (
-    "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBBbGibQLW9AAZiGN2hEQxWYYoFaWKwN3PKSaDJSMqmIn1Z9sgRUuw8Y/w502OGvXL/wFk0i2z50l3pWZjD7gfMH7gX5TUiCzwrQkS+Hn1U2S9aF5WJp0NcIzYxXw2r4M2A=="
-)
-PUB_ECDSA_521 = (
-    "ecdsa-sha2-nistp521 AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBACaOaFLZGuxa5AW16qj6VLypFbLrEWrt9AZUloCMefxO8bNLjK/O5g0rAVasar1TnyHE9qj4NwzANZASWjQNbc4MAG8vzqezFwLIn/kNyNTsXNfqEko9OgHZknlj2Z79dwTJcRAL4QLcT5aND0EHZLB2fAUDXiWIb2j4rg1mwPlBMiBXA=="
-)
+PUB_RSA = "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEA049W6geFpmsljTwfvI1UmKWWJPNFI74+vNKTk4dmzkQY2yAMs6FhlvhlI8ysU4oj71ZsRYMecHbBbxdN79+JRFVYTKaLqjwGENeTd+yv4q+V2PvZv3fLnzApI3l7EJCqhWwJUHJ1jAkZzqDx0tyOL4uoZpww3nmE0kb3y21tH4c="
+PUB_DSS = "ssh-dss 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"
+PUB_ECDSA_256 = "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJSPZm3ZWkvk/Zx8WP+fZRZ5/NBBHnGQwR6uIC6XHGPDIHuWUzIjAwA0bzqkOUffEsbLe+uQgKl5kbc/L8KA/eo="
+PUB_ECDSA_384 = "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBBbGibQLW9AAZiGN2hEQxWYYoFaWKwN3PKSaDJSMqmIn1Z9sgRUuw8Y/w502OGvXL/wFk0i2z50l3pWZjD7gfMH7gX5TUiCzwrQkS+Hn1U2S9aF5WJp0NcIzYxXw2r4M2A=="
+PUB_ECDSA_521 = "ecdsa-sha2-nistp521 AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBACaOaFLZGuxa5AW16qj6VLypFbLrEWrt9AZUloCMefxO8bNLjK/O5g0rAVasar1TnyHE9qj4NwzANZASWjQNbc4MAG8vzqezFwLIn/kNyNTsXNfqEko9OgHZknlj2Z79dwTJcRAL4QLcT5aND0EHZLB2fAUDXiWIb2j4rg1mwPlBMiBXA=="
 
 FINGER_RSA = "1024 60:73:38:44:cb:51:86:65:7f:de:da:a2:2b:5a:57:d5"
 FINGER_DSS = "1024 44:78:f0:b9:a2:3c:c5:18:20:09:ff:75:5b:c1:d2:6c"
 FINGER_ECDSA_256 = "256 25:19:eb:55:e6:a1:47:ff:4f:38:d2:75:6f:a5:d5:60"
 FINGER_ECDSA_384 = "384 c1:8d:a0:59:09:47:41:8e:a8:a6:07:01:29:23:b4:65"
 FINGER_ECDSA_521 = "521 44:58:22:52:12:33:16:0e:ce:0e:be:2c:7c:7e:cc:1e"
-SIGNED_RSA = (
-    "20:d7:8a:31:21:cb:f7:92:12:f2:a4:89:37:f5:78:af:e6:16:b6:25:b9:97:3d:a2:cd:5f:ca:20:21:73:4c:ad:34:73:8f:20:77:28:e2:94:15:08:d8:91:40:7a:85:83:bf:18:37:95:dc:54:1a:9b:88:29:6c:73:ca:38:b4:04:f1:56:b9:f2:42:9d:52:1b:29:29:b4:4f:fd:c9:2d:af:47:d2:40:76:30:f3:63:45:0c:d9:1d:43:86:0f:1c:70:e2:93:12:34:f3:ac:c5:0a:2f:14:50:66:59:f1:88:ee:c1:4a:e9:d1:9c:4e:46:f0:0e:47:6f:38:74:f1:44:a8"
-)
+SIGNED_RSA = "20:d7:8a:31:21:cb:f7:92:12:f2:a4:89:37:f5:78:af:e6:16:b6:25:b9:97:3d:a2:cd:5f:ca:20:21:73:4c:ad:34:73:8f:20:77:28:e2:94:15:08:d8:91:40:7a:85:83:bf:18:37:95:dc:54:1a:9b:88:29:6c:73:ca:38:b4:04:f1:56:b9:f2:42:9d:52:1b:29:29:b4:4f:fd:c9:2d:af:47:d2:40:76:30:f3:63:45:0c:d9:1d:43:86:0f:1c:70:e2:93:12:34:f3:ac:c5:0a:2f:14:50:66:59:f1:88:ee:c1:4a:e9:d1:9c:4e:46:f0:0e:47:6f:38:74:f1:44:a8"
 
 RSA_PRIVATE_OUT = """\
 -----BEGIN RSA PRIVATE KEY-----
@@ -121,16 +109,11 @@ L4QLcT5aND0EHZLB2fAUDXiWIb2j4rg1mwPlBMiBXA==
 
 x1234 = b"\x01\x02\x03\x04"
 
-TEST_KEY_BYTESTR_2 = (
-    "\x00\x00\x00\x07ssh-rsa\x00\x00\x00\x01#\x00\x00\x00\x81\x00\xd3\x8fV\xea\x07\x85\xa6k%\x8d<\x1f\xbc\x8dT\x98\xa5\x96$\xf3E#\xbe>\xbc\xd2\x93\x93\x87f\xceD\x18\xdb \x0c\xb3\xa1a\x96\xf8e#\xcc\xacS\x8a#\xefVlE\x83\x1epv\xc1o\x17M\xef\xdf\x89DUXL\xa6\x8b\xaa<\x06\x10\xd7\x93w\xec\xaf\xe2\xaf\x95\xd8\xfb\xd9\xbfw\xcb\x9f0)#y{\x10\x90\xaa\x85l\tPru\x8c\t\x19\xce\xa0\xf1\xd2\xdc\x8e/\x8b\xa8f\x9c0\xdey\x84\xd2F\xf7\xcbmm\x1f\x87"
-)
-TEST_KEY_BYTESTR_3 = (
-    "\x00\x00\x00\x07ssh-rsa\x00\x00\x00\x01#\x00\x00\x00\x00ӏV\x07k%<\x1fT$E#>ғfD\x18 \x0cae#̬S#VlE\x1epvo\x17M߉DUXL<\x06\x10דw\u2bd5ٿw˟0)#y{\x10l\tPru\t\x19Π\u070e/f0yFmm\x1f"
-)
+TEST_KEY_BYTESTR_2 = "\x00\x00\x00\x07ssh-rsa\x00\x00\x00\x01#\x00\x00\x00\x81\x00\xd3\x8fV\xea\x07\x85\xa6k%\x8d<\x1f\xbc\x8dT\x98\xa5\x96$\xf3E#\xbe>\xbc\xd2\x93\x93\x87f\xceD\x18\xdb \x0c\xb3\xa1a\x96\xf8e#\xcc\xacS\x8a#\xefVlE\x83\x1epv\xc1o\x17M\xef\xdf\x89DUXL\xa6\x8b\xaa<\x06\x10\xd7\x93w\xec\xaf\xe2\xaf\x95\xd8\xfb\xd9\xbfw\xcb\x9f0)#y{\x10\x90\xaa\x85l\tPru\x8c\t\x19\xce\xa0\xf1\xd2\xdc\x8e/\x8b\xa8f\x9c0\xdey\x84\xd2F\xf7\xcbmm\x1f\x87"
+TEST_KEY_BYTESTR_3 = "\x00\x00\x00\x07ssh-rsa\x00\x00\x00\x01#\x00\x00\x00\x00ӏV\x07k%<\x1fT$E#>ғfD\x18 \x0cae#̬S#VlE\x1epvo\x17M߉DUXL<\x06\x10דw\u2bd5ٿw˟0)#y{\x10l\tPru\t\x19Π\u070e/f0yFmm\x1f"
 
 
 class KeyTest(unittest.TestCase):
-
     def setUp(self):
         pass
 
@@ -150,9 +133,7 @@ class KeyTest(unittest.TestCase):
 
     def test_1_generate_key_bytes(self):
         key = util.generate_key_bytes(md5, x1234, "happy birthday", 30)
-        exp = (
-            b"\x61\xE1\xF2\x72\xF4\xC1\xC4\x56\x15\x86\xBD\x32\x24\x98\xC0\xE9\x24\x67\x27\x80\xF4\x7B\xB3\x7D\xDA\x7D\x54\x01\x9E\x64"
-        )
+        exp = b"\x61\xE1\xF2\x72\xF4\xC1\xC4\x56\x15\x86\xBD\x32\x24\x98\xC0\xE9\x24\x67\x27\x80\xF4\x7B\xB3\x7D\xDA\x7D\x54\x01\x9E\x64"
         self.assertEqual(exp, key)
 
     def test_2_load_rsa(self):
diff --git a/tests/test_sftp.py b/tests/test_sftp.py
index 576b69b7..fdb7c9bc 100644
--- a/tests/test_sftp.py
+++ b/tests/test_sftp.py
@@ -90,7 +90,6 @@ utf8_folder = b"/\xc3\xbcnic\xc3\xb8\x64\x65"
 
 @slow
 class TestSFTP(object):
-
     def test_1_file(self, sftp):
         """
         verify that we can create a file.
diff --git a/tests/test_sftp_big.py b/tests/test_sftp_big.py
index 97c0eb90..9df566e8 100644
--- a/tests/test_sftp_big.py
+++ b/tests/test_sftp_big.py
@@ -37,7 +37,6 @@ from .util import slow
 
 @slow
 class TestBigSFTP(object):
-
     def test_1_lots_of_files(self, sftp):
         """
         create a bunch of files over the same session.
diff --git a/tests/test_ssh_exception.py b/tests/test_ssh_exception.py
index 6cc5d06a..d9e0bd22 100644
--- a/tests/test_ssh_exception.py
+++ b/tests/test_ssh_exception.py
@@ -5,7 +5,6 @@ from paramiko.ssh_exception import NoValidConnectionsError
 
 
 class NoValidConnectionsErrorTest(unittest.TestCase):
-
     def test_pickling(self):
         # Regression test for https://github.com/paramiko/paramiko/issues/617
         exc = NoValidConnectionsError({("127.0.0.1", "22"): Exception()})
diff --git a/tests/test_ssh_gss.py b/tests/test_ssh_gss.py
index cee6ce89..b6b50152 100644
--- a/tests/test_ssh_gss.py
+++ b/tests/test_ssh_gss.py
@@ -34,7 +34,6 @@ from .test_client import FINGERPRINTS
 
 
 class NullServer(paramiko.ServerInterface):
-
     def get_allowed_auths(self, username):
         return "gssapi-with-mic,publickey"
 
@@ -69,7 +68,6 @@ class NullServer(paramiko.ServerInterface):
 
 @needs_gssapi
 class GSSAuthTest(unittest.TestCase):
-
     def setUp(self):
         # TODO: username and targ_name should come from os.environ or whatever
         # the approved pytest method is for runtime-configuring test data.
diff --git a/tests/test_transport.py b/tests/test_transport.py
index c05d6781..13fb302e 100644
--- a/tests/test_transport.py
+++ b/tests/test_transport.py
@@ -139,7 +139,6 @@ class NullServer(ServerInterface):
 
 
 class TransportTest(unittest.TestCase):
-
     def setUp(self):
         self.socks = LoopSocket()
         self.sockc = LoopSocket()
@@ -207,12 +206,8 @@ class TransportTest(unittest.TestCase):
         o.compression = o.compression
 
     def test_2_compute_key(self):
-        self.tc.K = (
-            123281095979686581523377256114209720774539068973101330872763622971399429481072519713536292772709507296759612401802191955568143056534122385270077606457721553469730659233569339356140085284052436697480759510519672848743794433460113118986816826624865291116513647975790797391795651716378444844877749505443714557929
-        )
-        self.tc.H = (
-            b"\x0C\x83\x07\xCD\xE6\x85\x6F\xF3\x0B\xA9\x36\x84\xEB\x0F\x04\xC2\x52\x0E\x9E\xD3"
-        )
+        self.tc.K = 123281095979686581523377256114209720774539068973101330872763622971399429481072519713536292772709507296759612401802191955568143056534122385270077606457721553469730659233569339356140085284052436697480759510519672848743794433460113118986816826624865291116513647975790797391795651716378444844877749505443714557929
+        self.tc.H = b"\x0C\x83\x07\xCD\xE6\x85\x6F\xF3\x0B\xA9\x36\x84\xEB\x0F\x04\xC2\x52\x0E\x9E\xD3"
         self.tc.session_id = self.tc.H
         key = self.tc._compute_key("C", 32)
         self.assertEqual(
@@ -738,7 +733,6 @@ class TransportTest(unittest.TestCase):
         # expires, a deadlock is assumed.
 
         class SendThread(threading.Thread):
-
             def __init__(self, chan, iterations, done_event):
                 threading.Thread.__init__(
                     self, None, None, self.__class__.__name__
@@ -763,7 +757,6 @@ class TransportTest(unittest.TestCase):
                     self.watchdog_event.set()
 
         class ReceiveThread(threading.Thread):
-
             def __init__(self, chan, done_event):
                 threading.Thread.__init__(
                     self, None, None, self.__class__.__name__
@@ -890,7 +883,6 @@ class TransportTest(unittest.TestCase):
         # (Doing this on the server's transport *sounds* more 'correct' but
         # actually doesn't work nearly as well for whatever reason.)
         class SlowPacketizer(Packetizer):
-
             def read_message(self):
                 time.sleep(1)
                 return super(SlowPacketizer, self).read_message()
diff --git a/tests/test_util.py b/tests/test_util.py
index 23b2e86a..705baa14 100644
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -67,7 +67,6 @@ from paramiko import *
 
 
 class UtilTest(unittest.TestCase):
-
     def test_import(self):
         """
         verify that all the classes can be imported from paramiko.