Switch from flake8 to ruff (#7920)

It's more than 60x faster.

55 files changed, 67 insertions, 113 deletions

diff --git a/tests/hazmat/backends/test_openssl.py b/tests/hazmat/backends/test_openssl.py
index a747f4d03..9879ca984 100644
--- a/tests/hazmat/backends/test_openssl.py
+++ b/tests/hazmat/backends/test_openssl.py
@@ -21,7 +21,6 @@ from cryptography.hazmat.primitives.ciphers import Cipher
 from cryptography.hazmat.primitives.ciphers.algorithms import AES
 from cryptography.hazmat.primitives.ciphers.modes import CBC
 
-from ..primitives.fixtures_rsa import RSA_KEY_2048, RSA_KEY_512
 from ...doubles import (
     DummyAsymmetricPadding,
     DummyBlockCipherAlgorithm,
@@ -34,6 +33,7 @@ from ...utils import (
     load_vectors_from_file,
     raises_unsupported_algorithm,
 )
+from ..primitives.fixtures_rsa import RSA_KEY_2048, RSA_KEY_512
 
 
 def skip_if_libre_ssl(openssl_version):
diff --git a/tests/hazmat/backends/test_openssl_memleak.py b/tests/hazmat/backends/test_openssl_memleak.py
index e23054a6e..ad5c4eb70 100644
--- a/tests/hazmat/backends/test_openssl_memleak.py
+++ b/tests/hazmat/backends/test_openssl_memleak.py
@@ -13,7 +13,6 @@ import pytest
 
 from cryptography.hazmat.bindings.openssl.binding import Binding
 
-
 MEMORY_LEAK_SCRIPT = """
 import sys
 
diff --git a/tests/hazmat/primitives/fixtures_dsa.py b/tests/hazmat/primitives/fixtures_dsa.py
index eca0ec431..6675a2c10 100644
--- a/tests/hazmat/primitives/fixtures_dsa.py
+++ b/tests/hazmat/primitives/fixtures_dsa.py
@@ -9,7 +9,6 @@ from cryptography.hazmat.primitives.asymmetric.dsa import (
     DSAPublicNumbers,
 )
 
-
 DSA_KEY_1024 = DSAPrivateNumbers(
     public_numbers=DSAPublicNumbers(
         parameter_numbers=DSAParameterNumbers(
diff --git a/tests/hazmat/primitives/fixtures_ec.py b/tests/hazmat/primitives/fixtures_ec.py
index 317c2ab24..fa671ac55 100644
--- a/tests/hazmat/primitives/fixtures_ec.py
+++ b/tests/hazmat/primitives/fixtures_ec.py
@@ -5,7 +5,6 @@
 
 from cryptography.hazmat.primitives.asymmetric import ec
 
-
 EC_KEY_SECT571R1 = ec.EllipticCurvePrivateNumbers(
     private_value=int(
         "213997069697108634621868251335076179190383272087548888968788698953"
diff --git a/tests/hazmat/primitives/fixtures_rsa.py b/tests/hazmat/primitives/fixtures_rsa.py
index f6b5c3b9f..09b32ab00 100644
--- a/tests/hazmat/primitives/fixtures_rsa.py
+++ b/tests/hazmat/primitives/fixtures_rsa.py
@@ -8,7 +8,6 @@ from cryptography.hazmat.primitives.asymmetric.rsa import (
     RSAPublicNumbers,
 )
 
-
 RSA_KEY_512 = RSAPrivateNumbers(
     p=int(
         "d57846898d5c0de249c08467586cb458fa9bc417cdf297f73cfc52281b787cd9", 16
diff --git a/tests/hazmat/primitives/test_3des.py b/tests/hazmat/primitives/test_3des.py
index ea39a2102..007ecfe21 100644
--- a/tests/hazmat/primitives/test_3des.py
+++ b/tests/hazmat/primitives/test_3des.py
@@ -14,8 +14,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms, modes
 
-from .utils import generate_encrypt_test
 from ...utils import load_nist_vectors
+from .utils import generate_encrypt_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_aead.py b/tests/hazmat/primitives/test_aead.py
index b7a4aedf3..98ebae866 100644
--- a/tests/hazmat/primitives/test_aead.py
+++ b/tests/hazmat/primitives/test_aead.py
@@ -17,13 +17,13 @@ from cryptography.hazmat.primitives.ciphers.aead import (
     ChaCha20Poly1305,
 )
 
-from .utils import _load_all_params
 from ...utils import (
     load_nist_ccm_vectors,
     load_nist_vectors,
     load_vectors_from_file,
     raises_unsupported_algorithm,
 )
+from .utils import _load_all_params
 
 
 class FakeData(bytes):
diff --git a/tests/hazmat/primitives/test_aes.py b/tests/hazmat/primitives/test_aes.py
index 9d68ef202..5798aefc6 100644
--- a/tests/hazmat/primitives/test_aes.py
+++ b/tests/hazmat/primitives/test_aes.py
@@ -10,9 +10,9 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms, base, modes
 
-from .utils import _load_all_params, generate_encrypt_test
 from ...doubles import DummyMode
 from ...utils import load_nist_vectors
+from .utils import _load_all_params, generate_encrypt_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_aes_gcm.py b/tests/hazmat/primitives/test_aes_gcm.py
index 9220e9e09..c1154a962 100644
--- a/tests/hazmat/primitives/test_aes_gcm.py
+++ b/tests/hazmat/primitives/test_aes_gcm.py
@@ -10,8 +10,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms, base, modes
 
-from .utils import generate_aead_test
 from ...utils import load_nist_vectors
+from .utils import generate_aead_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_arc4.py b/tests/hazmat/primitives/test_arc4.py
index 5bc23f92e..b589518ad 100644
--- a/tests/hazmat/primitives/test_arc4.py
+++ b/tests/hazmat/primitives/test_arc4.py
@@ -10,8 +10,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms
 
-from .utils import generate_stream_encryption_test
 from ...utils import load_nist_vectors
+from .utils import generate_stream_encryption_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_block.py b/tests/hazmat/primitives/test_block.py
index fa2c4f52a..b831de176 100644
--- a/tests/hazmat/primitives/test_block.py
+++ b/tests/hazmat/primitives/test_block.py
@@ -15,12 +15,12 @@ from cryptography.hazmat.primitives.ciphers import (
     modes,
 )
 
+from ...doubles import DummyCipherAlgorithm, DummyMode
+from ...utils import raises_unsupported_algorithm
 from .utils import (
     generate_aead_exception_test,
     generate_aead_tag_exception_test,
 )
-from ...doubles import DummyCipherAlgorithm, DummyMode
-from ...utils import raises_unsupported_algorithm
 
 
 class TestCipher:
diff --git a/tests/hazmat/primitives/test_blowfish.py b/tests/hazmat/primitives/test_blowfish.py
index 4ff8c1f2c..b8f34dfce 100644
--- a/tests/hazmat/primitives/test_blowfish.py
+++ b/tests/hazmat/primitives/test_blowfish.py
@@ -10,8 +10,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms, modes
 
-from .utils import generate_encrypt_test
 from ...utils import load_nist_vectors
+from .utils import generate_encrypt_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_camellia.py b/tests/hazmat/primitives/test_camellia.py
index 8ec75510b..d6f1fca86 100644
--- a/tests/hazmat/primitives/test_camellia.py
+++ b/tests/hazmat/primitives/test_camellia.py
@@ -10,8 +10,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms, modes
 
-from .utils import generate_encrypt_test
 from ...utils import load_cryptrec_vectors, load_nist_vectors
+from .utils import generate_encrypt_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_cast5.py b/tests/hazmat/primitives/test_cast5.py
index 6c6f0c884..a6f186a3c 100644
--- a/tests/hazmat/primitives/test_cast5.py
+++ b/tests/hazmat/primitives/test_cast5.py
@@ -10,8 +10,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms, modes
 
-from .utils import generate_encrypt_test
 from ...utils import load_nist_vectors
+from .utils import generate_encrypt_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_chacha20.py b/tests/hazmat/primitives/test_chacha20.py
index 4dd1b08cd..5337465b9 100644
--- a/tests/hazmat/primitives/test_chacha20.py
+++ b/tests/hazmat/primitives/test_chacha20.py
@@ -11,8 +11,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import Cipher, algorithms
 
-from .utils import _load_all_params
 from ...utils import load_nist_vectors
+from .utils import _load_all_params
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_cmac.py b/tests/hazmat/primitives/test_cmac.py
index 9596705b1..c9e7fdd88 100644
--- a/tests/hazmat/primitives/test_cmac.py
+++ b/tests/hazmat/primitives/test_cmac.py
@@ -7,10 +7,7 @@ import binascii
 
 import pytest
 
-from cryptography.exceptions import (
-    AlreadyFinalized,
-    InvalidSignature,
-)
+from cryptography.exceptions import AlreadyFinalized, InvalidSignature
 from cryptography.hazmat.primitives.ciphers.algorithms import (
     AES,
     ARC4,
@@ -18,11 +15,7 @@ from cryptography.hazmat.primitives.ciphers.algorithms import (
 )
 from cryptography.hazmat.primitives.cmac import CMAC
 
-from ...utils import (
-    load_nist_vectors,
-    load_vectors_from_file,
-)
-
+from ...utils import load_nist_vectors, load_vectors_from_file
 
 vectors_aes128 = load_vectors_from_file(
     "CMAC/nist-800-38b-aes128.txt", load_nist_vectors
diff --git a/tests/hazmat/primitives/test_concatkdf.py b/tests/hazmat/primitives/test_concatkdf.py
index bd0117ce1..f0dd18828 100644
--- a/tests/hazmat/primitives/test_concatkdf.py
+++ b/tests/hazmat/primitives/test_concatkdf.py
@@ -9,8 +9,10 @@ import pytest
 
 from cryptography.exceptions import AlreadyFinalized, InvalidKey
 from cryptography.hazmat.primitives import hashes
-from cryptography.hazmat.primitives.kdf.concatkdf import ConcatKDFHMAC
-from cryptography.hazmat.primitives.kdf.concatkdf import ConcatKDFHash
+from cryptography.hazmat.primitives.kdf.concatkdf import (
+    ConcatKDFHash,
+    ConcatKDFHMAC,
+)
 
 
 class TestConcatKDFHash:
diff --git a/tests/hazmat/primitives/test_dh.py b/tests/hazmat/primitives/test_dh.py
index 6e708676b..9a28d6114 100644
--- a/tests/hazmat/primitives/test_dh.py
+++ b/tests/hazmat/primitives/test_dh.py
@@ -13,9 +13,9 @@ import pytest
 from cryptography.hazmat.primitives import serialization
 from cryptography.hazmat.primitives.asymmetric import dh
 
-from .fixtures_dh import FFDH3072_P
 from ...doubles import DummyKeySerializationEncryption
 from ...utils import load_nist_vectors, load_vectors_from_file
+from .fixtures_dh import FFDH3072_P
 
 # RFC 3526
 P_1536 = int(
diff --git a/tests/hazmat/primitives/test_dsa.py b/tests/hazmat/primitives/test_dsa.py
index 424ffcee5..4ad4e9317 100644
--- a/tests/hazmat/primitives/test_dsa.py
+++ b/tests/hazmat/primitives/test_dsa.py
@@ -17,14 +17,14 @@ from cryptography.hazmat.primitives.asymmetric.utils import (
     encode_dss_signature,
 )
 
-from .fixtures_dsa import DSA_KEY_1024, DSA_KEY_2048, DSA_KEY_3072
-from .utils import skip_fips_traditional_openssl
 from ...doubles import DummyHashAlgorithm, DummyKeySerializationEncryption
 from ...utils import (
     load_fips_dsa_key_pair_vectors,
     load_fips_dsa_sig_vectors,
     load_vectors_from_file,
 )
+from .fixtures_dsa import DSA_KEY_1024, DSA_KEY_2048, DSA_KEY_3072
+from .utils import skip_fips_traditional_openssl
 
 _ALGORITHMS_DICT: typing.Dict[str, hashes.HashAlgorithm] = {
     "SHA1": hashes.SHA1(),
diff --git a/tests/hazmat/primitives/test_ec.py b/tests/hazmat/primitives/test_ec.py
index 3d488be17..142024459 100644
--- a/tests/hazmat/primitives/test_ec.py
+++ b/tests/hazmat/primitives/test_ec.py
@@ -20,8 +20,6 @@ from cryptography.hazmat.primitives.asymmetric.utils import (
     encode_dss_signature,
 )
 
-from .fixtures_ec import EC_KEY_SECP384R1
-from .utils import skip_fips_traditional_openssl
 from ...doubles import DummyKeySerializationEncryption
 from ...utils import (
     load_fips_ecdsa_key_pair_vectors,
@@ -31,6 +29,8 @@ from ...utils import (
     load_vectors_from_file,
     raises_unsupported_algorithm,
 )
+from .fixtures_ec import EC_KEY_SECP384R1
+from .utils import skip_fips_traditional_openssl
 
 _HASH_TYPES: typing.Dict[str, typing.Type[hashes.HashAlgorithm]] = {
     "SHA-1": hashes.SHA1,
diff --git a/tests/hazmat/primitives/test_hash_vectors.py b/tests/hazmat/primitives/test_hash_vectors.py
index d5916f061..bde811186 100644
--- a/tests/hazmat/primitives/test_hash_vectors.py
+++ b/tests/hazmat/primitives/test_hash_vectors.py
@@ -10,8 +10,8 @@ import pytest
 
 from cryptography.hazmat.primitives import hashes
 
-from .utils import _load_all_params, generate_hash_test
 from ...utils import load_hash_vectors, load_nist_vectors
+from .utils import _load_all_params, generate_hash_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_hashes.py b/tests/hazmat/primitives/test_hashes.py
index 37744e745..1d096772a 100644
--- a/tests/hazmat/primitives/test_hashes.py
+++ b/tests/hazmat/primitives/test_hashes.py
@@ -10,9 +10,9 @@ import pytest
 from cryptography.exceptions import AlreadyFinalized, _Reasons
 from cryptography.hazmat.primitives import hashes
 
-from .utils import generate_base_hash_test
 from ...doubles import DummyHashAlgorithm
 from ...utils import raises_unsupported_algorithm
+from .utils import generate_base_hash_test
 
 
 class TestHashContext:
diff --git a/tests/hazmat/primitives/test_hkdf.py b/tests/hazmat/primitives/test_hkdf.py
index cc001baf5..0bd5c97c4 100644
--- a/tests/hazmat/primitives/test_hkdf.py
+++ b/tests/hazmat/primitives/test_hkdf.py
@@ -12,10 +12,7 @@ from cryptography.exceptions import AlreadyFinalized, InvalidKey
 from cryptography.hazmat.primitives import hashes
 from cryptography.hazmat.primitives.kdf.hkdf import HKDF, HKDFExpand
 
-from ...utils import (
-    load_nist_vectors,
-    load_vectors_from_file,
-)
+from ...utils import load_nist_vectors, load_vectors_from_file
 
 
 class TestHKDF:
diff --git a/tests/hazmat/primitives/test_hkdf_vectors.py b/tests/hazmat/primitives/test_hkdf_vectors.py
index 711d1b5ec..080aa1b5b 100644
--- a/tests/hazmat/primitives/test_hkdf_vectors.py
+++ b/tests/hazmat/primitives/test_hkdf_vectors.py
@@ -9,8 +9,8 @@ import pytest
 
 from cryptography.hazmat.primitives import hashes
 
-from .utils import generate_hkdf_test
 from ...utils import load_nist_vectors
+from .utils import generate_hkdf_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_hmac.py b/tests/hazmat/primitives/test_hmac.py
index 414385c5d..818ff2a7d 100644
--- a/tests/hazmat/primitives/test_hmac.py
+++ b/tests/hazmat/primitives/test_hmac.py
@@ -14,9 +14,9 @@ from cryptography.exceptions import (
 )
 from cryptography.hazmat.primitives import hashes, hmac
 
-from .utils import generate_base_hmac_test
 from ...doubles import DummyHashAlgorithm
 from ...utils import raises_unsupported_algorithm
+from .utils import generate_base_hmac_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_hmac_vectors.py b/tests/hazmat/primitives/test_hmac_vectors.py
index 703065a55..790993a34 100644
--- a/tests/hazmat/primitives/test_hmac_vectors.py
+++ b/tests/hazmat/primitives/test_hmac_vectors.py
@@ -9,8 +9,8 @@ import pytest
 
 from cryptography.hazmat.primitives import hashes, hmac
 
-from .utils import generate_hmac_test
 from ...utils import load_hash_vectors
+from .utils import generate_hmac_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_idea.py b/tests/hazmat/primitives/test_idea.py
index d591fe4e7..9817d5444 100644
--- a/tests/hazmat/primitives/test_idea.py
+++ b/tests/hazmat/primitives/test_idea.py
@@ -10,8 +10,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms, modes
 
-from .utils import generate_encrypt_test
 from ...utils import load_nist_vectors
+from .utils import generate_encrypt_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_kbkdf.py b/tests/hazmat/primitives/test_kbkdf.py
index bb8ebea0d..4329e3df6 100644
--- a/tests/hazmat/primitives/test_kbkdf.py
+++ b/tests/hazmat/primitives/test_kbkdf.py
@@ -11,9 +11,9 @@ from cryptography.exceptions import AlreadyFinalized, InvalidKey, _Reasons
 from cryptography.hazmat.primitives import hashes
 from cryptography.hazmat.primitives.ciphers import algorithms
 from cryptography.hazmat.primitives.kdf.kbkdf import (
-    CounterLocation,
     KBKDFCMAC,
     KBKDFHMAC,
+    CounterLocation,
     Mode,
 )
 
diff --git a/tests/hazmat/primitives/test_kbkdf_vectors.py b/tests/hazmat/primitives/test_kbkdf_vectors.py
index fef75fe21..cab817bf4 100644
--- a/tests/hazmat/primitives/test_kbkdf_vectors.py
+++ b/tests/hazmat/primitives/test_kbkdf_vectors.py
@@ -5,8 +5,8 @@
 
 import os
 
-from .utils import generate_kbkdf_counter_mode_test
 from ...utils import load_nist_kbkdf_vectors
+from .utils import generate_kbkdf_counter_mode_test
 
 
 class TestCounterKDFCounterMode:
diff --git a/tests/hazmat/primitives/test_keywrap.py b/tests/hazmat/primitives/test_keywrap.py
index b2fa05d74..7dfb80901 100644
--- a/tests/hazmat/primitives/test_keywrap.py
+++ b/tests/hazmat/primitives/test_keywrap.py
@@ -11,8 +11,8 @@ import pytest
 from cryptography.hazmat.primitives import keywrap
 from cryptography.hazmat.primitives.ciphers import algorithms, modes
 
-from .utils import _load_all_params
 from ...utils import load_nist_vectors
+from .utils import _load_all_params
 
 
 class TestAESKeyWrap:
diff --git a/tests/hazmat/primitives/test_pbkdf2hmac_vectors.py b/tests/hazmat/primitives/test_pbkdf2hmac_vectors.py
index f092894f5..60d2f864d 100644
--- a/tests/hazmat/primitives/test_pbkdf2hmac_vectors.py
+++ b/tests/hazmat/primitives/test_pbkdf2hmac_vectors.py
@@ -7,8 +7,8 @@ import pytest
 
 from cryptography.hazmat.primitives import hashes
 
-from .utils import generate_pbkdf2_test
 from ...utils import load_nist_vectors
+from .utils import generate_pbkdf2_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_rsa.py b/tests/hazmat/primitives/test_rsa.py
index 7a4b2f1e3..919331caf 100644
--- a/tests/hazmat/primitives/test_rsa.py
+++ b/tests/hazmat/primitives/test_rsa.py
@@ -15,16 +15,25 @@ from cryptography.exceptions import (
     _Reasons,
 )
 from cryptography.hazmat.primitives import hashes, serialization
-from cryptography.hazmat.primitives.asymmetric import (
-    padding,
-    rsa,
-    utils as asym_utils,
-)
+from cryptography.hazmat.primitives.asymmetric import padding, rsa
+from cryptography.hazmat.primitives.asymmetric import utils as asym_utils
 from cryptography.hazmat.primitives.asymmetric.rsa import (
     RSAPrivateNumbers,
     RSAPublicNumbers,
 )
 
+from ...doubles import (
+    DummyAsymmetricPadding,
+    DummyHashAlgorithm,
+    DummyKeySerializationEncryption,
+)
+from ...utils import (
+    load_nist_vectors,
+    load_pkcs1_vectors,
+    load_rsa_nist_vectors,
+    load_vectors_from_file,
+    raises_unsupported_algorithm,
+)
 from .fixtures_rsa import (
     RSA_KEY_1024,
     RSA_KEY_1025,
@@ -48,18 +57,6 @@ from .utils import (
     generate_rsa_verification_test,
     skip_fips_traditional_openssl,
 )
-from ...doubles import (
-    DummyAsymmetricPadding,
-    DummyHashAlgorithm,
-    DummyKeySerializationEncryption,
-)
-from ...utils import (
-    load_nist_vectors,
-    load_pkcs1_vectors,
-    load_rsa_nist_vectors,
-    load_vectors_from_file,
-    raises_unsupported_algorithm,
-)
 
 
 class DummyMGF(padding.MGF):
diff --git a/tests/hazmat/primitives/test_scrypt.py b/tests/hazmat/primitives/test_scrypt.py
index 6e95a1f26..4b4641854 100644
--- a/tests/hazmat/primitives/test_scrypt.py
+++ b/tests/hazmat/primitives/test_scrypt.py
@@ -8,12 +8,8 @@ import os
 
 import pytest
 
-from cryptography.exceptions import (
-    AlreadyFinalized,
-    InvalidKey,
-)
-from cryptography.hazmat.primitives.kdf.scrypt import Scrypt, _MEM_LIMIT
-
+from cryptography.exceptions import AlreadyFinalized, InvalidKey
+from cryptography.hazmat.primitives.kdf.scrypt import _MEM_LIMIT, Scrypt
 from tests.utils import (
     load_nist_vectors,
     load_vectors_from_file,
diff --git a/tests/hazmat/primitives/test_seed.py b/tests/hazmat/primitives/test_seed.py
index eb0b88c2a..9f68bc3fb 100644
--- a/tests/hazmat/primitives/test_seed.py
+++ b/tests/hazmat/primitives/test_seed.py
@@ -10,8 +10,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms, modes
 
-from .utils import generate_encrypt_test
 from ...utils import load_nist_vectors
+from .utils import generate_encrypt_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/test_serialization.py b/tests/hazmat/primitives/test_serialization.py
index 3a08d5570..3f1a55c23 100644
--- a/tests/hazmat/primitives/test_serialization.py
+++ b/tests/hazmat/primitives/test_serialization.py
@@ -39,15 +39,11 @@ from cryptography.hazmat.primitives.serialization import (
 )
 from cryptography.hazmat.primitives.serialization.pkcs12 import PBES
 
-
-from .fixtures_rsa import RSA_KEY_2048
-from .test_ec import _skip_curve_unsupported
-from .utils import (
-    _check_dsa_private_numbers,
-    _check_rsa_private_numbers,
-)
 from ...doubles import DummyKeySerializationEncryption
 from ...utils import load_vectors_from_file, raises_unsupported_algorithm
+from .fixtures_rsa import RSA_KEY_2048
+from .test_ec import _skip_curve_unsupported
+from .utils import _check_dsa_private_numbers, _check_rsa_private_numbers
 
 
 def _skip_fips_format(key_path, password, backend):
diff --git a/tests/hazmat/primitives/test_sm4.py b/tests/hazmat/primitives/test_sm4.py
index 07b0cc7f7..13d9b5051 100644
--- a/tests/hazmat/primitives/test_sm4.py
+++ b/tests/hazmat/primitives/test_sm4.py
@@ -9,8 +9,8 @@ import pytest
 
 from cryptography.hazmat.primitives.ciphers import algorithms, modes
 
-from .utils import generate_encrypt_test
 from ...utils import load_nist_vectors
+from .utils import generate_encrypt_test
 
 
 @pytest.mark.supported(
diff --git a/tests/hazmat/primitives/twofactor/test_hotp.py b/tests/hazmat/primitives/twofactor/test_hotp.py
index d1c6cb530..31e01a495 100644
--- a/tests/hazmat/primitives/twofactor/test_hotp.py
+++ b/tests/hazmat/primitives/twofactor/test_hotp.py
@@ -12,10 +12,7 @@ from cryptography.hazmat.primitives.hashes import MD5, SHA1
 from cryptography.hazmat.primitives.twofactor import InvalidToken
 from cryptography.hazmat.primitives.twofactor.hotp import HOTP
 
-from ....utils import (
-    load_nist_vectors,
-    load_vectors_from_file,
-)
+from ....utils import load_nist_vectors, load_vectors_from_file
 
 vectors = load_vectors_from_file("twofactor/rfc-4226.txt", load_nist_vectors)
 
diff --git a/tests/hazmat/primitives/twofactor/test_totp.py b/tests/hazmat/primitives/twofactor/test_totp.py
index 3c8d6b372..f68a8339c 100644
--- a/tests/hazmat/primitives/twofactor/test_totp.py
+++ b/tests/hazmat/primitives/twofactor/test_totp.py
@@ -9,10 +9,7 @@ from cryptography.hazmat.primitives import hashes
 from cryptography.hazmat.primitives.twofactor import InvalidToken
 from cryptography.hazmat.primitives.twofactor.totp import TOTP
 
-from ....utils import (
-    load_nist_vectors,
-    load_vectors_from_file,
-)
+from ....utils import load_nist_vectors, load_vectors_from_file
 
 vectors = load_vectors_from_file("twofactor/rfc-6238.txt", load_nist_vectors)
 
diff --git a/tests/hazmat/primitives/utils.py b/tests/hazmat/primitives/utils.py
index c8021cc2f..aac7296e6 100644
--- a/tests/hazmat/primitives/utils.py
+++ b/tests/hazmat/primitives/utils.py
@@ -26,9 +26,9 @@ from cryptography.hazmat.primitives.ciphers import (
 from cryptography.hazmat.primitives.ciphers.modes import GCM
 from cryptography.hazmat.primitives.kdf.hkdf import HKDF, HKDFExpand
 from cryptography.hazmat.primitives.kdf.kbkdf import (
-    CounterLocation,
     KBKDFCMAC,
     KBKDFHMAC,
+    CounterLocation,
     Mode,
 )
 from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
diff --git a/tests/test_fernet.py b/tests/test_fernet.py
index 58dd77296..d4b1561a0 100644
--- a/tests/test_fernet.py
+++ b/tests/test_fernet.py
@@ -10,16 +10,13 @@ import os
 import time
 
 import iso8601
-
 import pretend
-
 import pytest
 
+import cryptography_vectors
 from cryptography.fernet import Fernet, InvalidToken, MultiFernet
 from cryptography.hazmat.primitives.ciphers import algorithms, modes
 
-import cryptography_vectors
-
 
 def json_parametrize(keys, filename):
     vector_file = cryptography_vectors.open_vector_file(
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 8b07c91b0..9f6e27150 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -9,14 +9,12 @@ import os
 import textwrap
 
 import pretend
-
 import pytest
 
 import cryptography
 import cryptography.utils
-from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
-
 import cryptography_vectors
+from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
 
 from . import deprecated_module
 from .utils import (
diff --git a/tests/utils.py b/tests/utils.py
index 6119d3f4d..405cfbc78 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -13,10 +13,8 @@ from contextlib import contextmanager
 
 import pytest
 
-from cryptography.exceptions import UnsupportedAlgorithm
-
 import cryptography_vectors
-
+from cryptography.exceptions import UnsupportedAlgorithm
 
 HashVector = collections.namedtuple("HashVector", ["message", "digest"])
 KeyedHashVector = collections.namedtuple(
diff --git a/tests/wycheproof/test_aes.py b/tests/wycheproof/test_aes.py
index 891d8df43..ce83fe3c0 100644
--- a/tests/wycheproof/test_aes.py
+++ b/tests/wycheproof/test_aes.py
@@ -12,8 +12,8 @@ from cryptography.hazmat.primitives import padding
 from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
 from cryptography.hazmat.primitives.ciphers.aead import AESCCM, AESGCM
 
-from .utils import wycheproof_tests
 from ..hazmat.primitives.test_aead import _aead_supported
+from .utils import wycheproof_tests
 
 
 @wycheproof_tests("aes_cbc_pkcs5_test.json")
diff --git a/tests/wycheproof/test_chacha20poly1305.py b/tests/wycheproof/test_chacha20poly1305.py
index 7cb8ff50f..06d6fc76a 100644
--- a/tests/wycheproof/test_chacha20poly1305.py
+++ b/tests/wycheproof/test_chacha20poly1305.py
@@ -10,8 +10,8 @@ import pytest
 from cryptography.exceptions import InvalidTag
 from cryptography.hazmat.primitives.ciphers.aead import ChaCha20Poly1305
 
-from .utils import wycheproof_tests
 from ..hazmat.primitives.test_aead import _aead_supported
+from .utils import wycheproof_tests
 
 
 @pytest.mark.skipif(
diff --git a/tests/wycheproof/test_dsa.py b/tests/wycheproof/test_dsa.py
index 3d31ee170..b7da82dc3 100644
--- a/tests/wycheproof/test_dsa.py
+++ b/tests/wycheproof/test_dsa.py
@@ -13,7 +13,6 @@ from cryptography.hazmat.primitives.asymmetric import dsa
 
 from .utils import wycheproof_tests
 
-
 _DIGESTS = {
     "SHA-1": hashes.SHA1(),
     "SHA-224": hashes.SHA224(),
diff --git a/tests/wycheproof/test_ecdh.py b/tests/wycheproof/test_ecdh.py
index 672863fe7..1de26cb26 100644
--- a/tests/wycheproof/test_ecdh.py
+++ b/tests/wycheproof/test_ecdh.py
@@ -11,9 +11,8 @@ from cryptography.exceptions import UnsupportedAlgorithm
 from cryptography.hazmat.primitives import serialization
 from cryptography.hazmat.primitives.asymmetric import ec
 
-from .utils import wycheproof_tests
 from ..hazmat.primitives.test_ec import _skip_exchange_algorithm_unsupported
-
+from .utils import wycheproof_tests
 
 _CURVES = {
     "secp224r1": ec.SECP224R1(),
diff --git a/tests/wycheproof/test_ecdsa.py b/tests/wycheproof/test_ecdsa.py
index b2ec9dfec..ffdfcc461 100644
--- a/tests/wycheproof/test_ecdsa.py
+++ b/tests/wycheproof/test_ecdsa.py
@@ -13,7 +13,6 @@ from cryptography.hazmat.primitives.asymmetric import ec
 
 from .utils import wycheproof_tests
 
-
 _DIGESTS = {
     "SHA-1": hashes.SHA1(),
     "SHA-224": hashes.SHA224(),
diff --git a/tests/wycheproof/test_hkdf.py b/tests/wycheproof/test_hkdf.py
index 4886be0fe..3d54e44ff 100644
--- a/tests/wycheproof/test_hkdf.py
+++ b/tests/wycheproof/test_hkdf.py
@@ -12,7 +12,6 @@ from cryptography.hazmat.primitives.kdf.hkdf import HKDF
 
 from .utils import wycheproof_tests
 
-
 _HASH_ALGORITHMS = {
     "HKDF-SHA-1": hashes.SHA1(),
     "HKDF-SHA-256": hashes.SHA256(),
diff --git a/tests/wycheproof/test_hmac.py b/tests/wycheproof/test_hmac.py
index 84b0c19a0..49fe772cb 100644
--- a/tests/wycheproof/test_hmac.py
+++ b/tests/wycheproof/test_hmac.py
@@ -12,7 +12,6 @@ from cryptography.hazmat.primitives import hashes, hmac
 
 from .utils import wycheproof_tests
 
-
 _HMAC_ALGORITHMS = {
     "HMACSHA1": hashes.SHA1(),
     "HMACSHA224": hashes.SHA224(),
diff --git a/tests/wycheproof/test_rsa.py b/tests/wycheproof/test_rsa.py
index e2b8426fd..56ec21bc0 100644
--- a/tests/wycheproof/test_rsa.py
+++ b/tests/wycheproof/test_rsa.py
@@ -13,7 +13,6 @@ from cryptography.hazmat.primitives.asymmetric import padding, rsa
 
 from .utils import wycheproof_tests
 
-
 _DIGESTS = {
     "SHA-1": hashes.SHA1(),
     "SHA-224": hashes.SHA224(),
diff --git a/tests/x509/test_ocsp.py b/tests/x509/test_ocsp.py
index 9090e5205..ade916195 100644
--- a/tests/x509/test_ocsp.py
+++ b/tests/x509/test_ocsp.py
@@ -15,9 +15,9 @@ from cryptography.hazmat.primitives.asymmetric import ec, ed25519, ed448, rsa
 from cryptography.hazmat.primitives.asymmetric.padding import PKCS1v15
 from cryptography.x509 import ocsp
 
-from .test_x509 import DummyExtension, _load_cert
 from ..hazmat.primitives.fixtures_ec import EC_KEY_SECP256R1
 from ..utils import load_vectors_from_file, raises_unsupported_algorithm
+from .test_x509 import DummyExtension, _load_cert
 
 
 def _load_data(filename, loader):
diff --git a/tests/x509/test_x509.py b/tests/x509/test_x509.py
index 8a92c297c..1de0f6c45 100644
--- a/tests/x509/test_x509.py
+++ b/tests/x509/test_x509.py
@@ -12,7 +12,6 @@ import os
 import typing
 
 import pytest
-
 import pytz
 
 from cryptography import utils, x509
diff --git a/tests/x509/test_x509_crlbuilder.py b/tests/x509/test_x509_crlbuilder.py
index e3e34285d..5960cdd3b 100644
--- a/tests/x509/test_x509_crlbuilder.py
+++ b/tests/x509/test_x509_crlbuilder.py
@@ -6,7 +6,6 @@
 import datetime
 
 import pytest
-
 import pytz
 
 from cryptography import x509
@@ -18,11 +17,11 @@ from cryptography.x509.oid import (
     SignatureAlgorithmOID,
 )
 
-from .test_x509 import DummyExtension
 from ..hazmat.primitives.fixtures_dsa import DSA_KEY_2048
 from ..hazmat.primitives.fixtures_ec import EC_KEY_SECP256R1
 from ..hazmat.primitives.fixtures_rsa import RSA_KEY_2048, RSA_KEY_512
 from ..hazmat.primitives.test_ec import _skip_curve_unsupported
+from .test_x509 import DummyExtension
 
 
 class TestCertificateRevocationListBuilder:
diff --git a/tests/x509/test_x509_ext.py b/tests/x509/test_x509_ext.py
index 7284a73be..d3276b7cd 100644
--- a/tests/x509/test_x509_ext.py
+++ b/tests/x509/test_x509_ext.py
@@ -10,7 +10,6 @@ import os
 import typing
 
 import pretend
-
 import pytest
 
 from cryptography import x509
@@ -37,10 +36,10 @@ from cryptography.x509.oid import (
     SubjectInformationAccessOID,
 )
 
-from .test_x509 import _load_cert
 from ..hazmat.primitives.fixtures_rsa import RSA_KEY_2048
 from ..hazmat.primitives.test_ec import _skip_curve_unsupported
 from ..utils import load_vectors_from_file
+from .test_x509 import _load_cert
 
 
 def _make_certbuilder(private_key):
diff --git a/tests/x509/test_x509_revokedcertbuilder.py b/tests/x509/test_x509_revokedcertbuilder.py
index b2facfa51..83a71ff9b 100644
--- a/tests/x509/test_x509_revokedcertbuilder.py
+++ b/tests/x509/test_x509_revokedcertbuilder.py
@@ -6,7 +6,6 @@
 import datetime
 
 import pytest
-
 import pytz
 
 from cryptography import x509