diff --git a/spacy/tests/matcher/test_matcher_api.py b/spacy/tests/matcher/test_matcher_api.py
index be40272c6..740c8bb98 100644
--- a/spacy/tests/matcher/test_matcher_api.py
+++ b/spacy/tests/matcher/test_matcher_api.py
@@ -181,74 +181,76 @@ def test_matcher_any_token_operator(en_vocab):
 
 def test_matcher_extension_attribute(en_vocab):
     matcher = Matcher(en_vocab)
-    Token.set_extension('is_fruit',
-        getter=lambda token: token.text in ('apple', 'banana'), force=True)
-    pattern = [{'ORTH': 'an'}, {'_': {'is_fruit': True}}]
-    matcher.add('HAVING_FRUIT', None, pattern)
-    doc = Doc(en_vocab, words=['an', 'apple'])
+    get_is_fruit = lambda token: token.text in ("apple", "banana")
+    Token.set_extension("is_fruit", getter=get_is_fruit, force=True)
+    pattern = [{"ORTH": "an"}, {"_": {"is_fruit": True}}]
+    matcher.add("HAVING_FRUIT", None, pattern)
+    doc = Doc(en_vocab, words=["an", "apple"])
     matches = matcher(doc)
     assert len(matches) == 1
-    doc = Doc(en_vocab, words=['an', 'aardvark'])
+    doc = Doc(en_vocab, words=["an", "aardvark"])
     matches = matcher(doc)
     assert len(matches) == 0
 
 
 def test_matcher_set_value(en_vocab):
     matcher = Matcher(en_vocab)
-    pattern = [{'ORTH': {'IN': ['an', 'a']}}]
-    matcher.add('A_OR_AN', None, pattern)
-    doc = Doc(en_vocab, words=['an', 'a', 'apple'])
+    pattern = [{"ORTH": {"IN": ["an", "a"]}}]
+    matcher.add("A_OR_AN", None, pattern)
+    doc = Doc(en_vocab, words=["an", "a", "apple"])
     matches = matcher(doc)
     assert len(matches) == 2
-    doc = Doc(en_vocab, words=['aardvark'])
+    doc = Doc(en_vocab, words=["aardvark"])
     matches = matcher(doc)
     assert len(matches) == 0
 
 
 def test_matcher_regex(en_vocab):
     matcher = Matcher(en_vocab)
-    pattern = [{'ORTH': {'REGEX': r'(?:a|an)'}}]
-    matcher.add('A_OR_AN', None, pattern)
-    doc = Doc(en_vocab, words=['an', 'a', 'hi'])
+    pattern = [{"ORTH": {"REGEX": r"(?:a|an)"}}]
+    matcher.add("A_OR_AN", None, pattern)
+    doc = Doc(en_vocab, words=["an", "a", "hi"])
     matches = matcher(doc)
     assert len(matches) == 2
-    doc = Doc(en_vocab, words=['bye'])
+    doc = Doc(en_vocab, words=["bye"])
     matches = matcher(doc)
     assert len(matches) == 0
 
+
 def test_matcher_regex_shape(en_vocab):
     matcher = Matcher(en_vocab)
-    pattern = [{'SHAPE': {'REGEX': r'^[^x]+$'}}]
-    matcher.add('NON_ALPHA', None, pattern)
-    doc = Doc(en_vocab, words=['99', 'problems', '!'])
+    pattern = [{"SHAPE": {"REGEX": r"^[^x]+$"}}]
+    matcher.add("NON_ALPHA", None, pattern)
+    doc = Doc(en_vocab, words=["99", "problems", "!"])
     matches = matcher(doc)
     assert len(matches) == 2
-    doc = Doc(en_vocab, words=['bye'])
+    doc = Doc(en_vocab, words=["bye"])
     matches = matcher(doc)
     assert len(matches) == 0
 
+
 def test_matcher_compare_length(en_vocab):
     matcher = Matcher(en_vocab)
-    pattern = [{'LENGTH': {'>=': 2}}]
-    matcher.add('LENGTH_COMPARE', None, pattern)
-    doc = Doc(en_vocab, words=['a', 'aa', 'aaa'])
+    pattern = [{"LENGTH": {">=": 2}}]
+    matcher.add("LENGTH_COMPARE", None, pattern)
+    doc = Doc(en_vocab, words=["a", "aa", "aaa"])
     matches = matcher(doc)
     assert len(matches) == 2
-    doc = Doc(en_vocab, words=['a'])
+    doc = Doc(en_vocab, words=["a"])
     matches = matcher(doc)
     assert len(matches) == 0
 
 
 def test_matcher_extension_set_membership(en_vocab):
     matcher = Matcher(en_vocab)
-    Token.set_extension('reversed',
-        getter=lambda token: ''.join(reversed(token.text)), force=True)
-    pattern = [{'_': {'reversed': {"IN": ["eyb", "ih"]}}}]
-    matcher.add('REVERSED', None, pattern)
-    doc = Doc(en_vocab, words=['hi', 'bye', 'hello'])
+    get_reversed = lambda token: "".join(reversed(token.text))
+    Token.set_extension("reversed", getter=get_reversed, force=True)
+    pattern = [{"_": {"reversed": {"IN": ["eyb", "ih"]}}}]
+    matcher.add("REVERSED", None, pattern)
+    doc = Doc(en_vocab, words=["hi", "bye", "hello"])
     matches = matcher(doc)
     assert len(matches) == 2
-    doc = Doc(en_vocab, words=['aardvark'])
+    doc = Doc(en_vocab, words=["aardvark"])
     matches = matcher(doc)
     assert len(matches) == 0