Big refactor to become more PEP8 compliant.
Mostly focused on docstrings (''' → """), indentation, empty lines,
and superfluous parenthesis.
diff --git a/tests/test_load_save_keys.py b/tests/test_load_save_keys.py
index 6d87cf9..8fc3b22 100644
--- a/tests/test_load_save_keys.py
+++ b/tests/test_load_save_keys.py
@@ -72,10 +72,10 @@
 
 
 class DerTest(unittest.TestCase):
-    '''Test saving and loading DER keys.'''
+    """Test saving and loading DER keys."""
 
     def test_load_private_key(self):
-        '''Test loading private DER keys.'''
+        """Test loading private DER keys."""
 
         key = rsa.key.PrivateKey.load_pkcs1(PRIVATE_DER, 'DER')
         expected = rsa.key.PrivateKey(3727264081, 65537, 3349121513, 65063, 57287)
@@ -83,7 +83,7 @@
         self.assertEqual(expected, key)
 
     def test_save_private_key(self):
-        '''Test saving private DER keys.'''
+        """Test saving private DER keys."""
 
         key = rsa.key.PrivateKey(3727264081, 65537, 3349121513, 65063, 57287)
         der = key.save_pkcs1('DER')
@@ -91,7 +91,7 @@
         self.assertEqual(PRIVATE_DER, der)
 
     def test_load_public_key(self):
-        '''Test loading public DER keys.'''
+        """Test loading public DER keys."""
 
         key = rsa.key.PublicKey.load_pkcs1(PUBLIC_DER, 'DER')
         expected = rsa.key.PublicKey(3727264081, 65537)
@@ -99,19 +99,19 @@
         self.assertEqual(expected, key)
 
     def test_save_public_key(self):
-        '''Test saving public DER keys.'''
+        """Test saving public DER keys."""
 
         key = rsa.key.PublicKey(3727264081, 65537)
         der = key.save_pkcs1('DER')
 
         self.assertEqual(PUBLIC_DER, der)
 
-class PemTest(unittest.TestCase):
-    '''Test saving and loading PEM keys.'''
 
+class PemTest(unittest.TestCase):
+    """Test saving and loading PEM keys."""
 
     def test_load_private_key(self):
-        '''Test loading private PEM files.'''
+        """Test loading private PEM files."""
 
         key = rsa.key.PrivateKey.load_pkcs1(PRIVATE_PEM, 'PEM')
         expected = rsa.key.PrivateKey(3727264081, 65537, 3349121513, 65063, 57287)
@@ -119,7 +119,7 @@
         self.assertEqual(expected, key)
 
     def test_save_private_key(self):
-        '''Test saving private PEM files.'''
+        """Test saving private PEM files."""
 
         key = rsa.key.PrivateKey(3727264081, 65537, 3349121513, 65063, 57287)
         pem = key.save_pkcs1('PEM')
@@ -127,7 +127,7 @@
         self.assertEqual(CLEAN_PRIVATE_PEM, pem)
 
     def test_load_public_key(self):
-        '''Test loading public PEM files.'''
+        """Test loading public PEM files."""
 
         key = rsa.key.PublicKey.load_pkcs1(PUBLIC_PEM, 'PEM')
         expected = rsa.key.PublicKey(3727264081, 65537)
@@ -135,14 +135,13 @@
         self.assertEqual(expected, key)
 
     def test_save_public_key(self):
-        '''Test saving public PEM files.'''
+        """Test saving public PEM files."""
 
         key = rsa.key.PublicKey(3727264081, 65537)
         pem = key.save_pkcs1('PEM')
 
         self.assertEqual(CLEAN_PUBLIC_PEM, pem)
 
-
     def test_load_from_disk(self):
         """Test loading a PEM file from disk."""