Fixing flake8 errors

tests/test_mx_check.py

@@ -1,9 +1,10 @@
+from types import SimpleNamespace
 from unittest.case import TestCase
 from unittest.mock import Mock, patch
-from types import SimpleNamespace
 
 from validate_email import mx_check as mx_module
-from validate_email.mx_check import _get_domain_from_email_address, _get_mx_records
+from validate_email.mx_check import (
+    _get_domain_from_email_address, _get_mx_records)
 
 DOMAINS = {
     'email@domain.com': 'domain.com',
@@ -36,7 +37,7 @@ class DomainTestCase(TestCase):
             self.assertEqual(domain_from_function, domain)
 
 
-class GetMxRecordsTest(TestCase):
+class GetMxRecordsTestCase(TestCase):
     'Testing `_get_mx_records`.'
 
     @patch.object(target=mx_module, attribute='query', new=TEST_QUERY)

validate_email/constants.py

@@ -1,5 +1,5 @@
-from re import compile as re_compile
 from re import IGNORECASE
+from re import compile as re_compile
 
 HOST_REGEX = re_compile(
     # max length for domain name labels is 63 characters per RFC 1034

validate_email/mx_check.py

@@ -1,11 +1,11 @@
-from re import compile as re_compile
 from smtplib import SMTP, SMTPServerDisconnected
 from socket import error as SocketError
 from socket import gethostname
 from typing import Optional
 
 from dns.rdtypes.ANY.MX import MX
-from dns.resolver import NXDOMAIN, NoAnswer, query, Answer
+from dns.resolver import NXDOMAIN, Answer, NoAnswer, query
+
 from .constants import EMAIL_EXTRACT_HOST_REGEX, HOST_REGEX