diff --git a/tests/test_json_compat.py b/tests/test_json_compat.py
index 30585f97..b8987017 100644
--- a/tests/test_json_compat.py
+++ b/tests/test_json_compat.py
@@ -14,14 +14,15 @@
 
 """
 
-import ujson
-import json as pjson
 import itertools as it
+import json as pjson
 from collections import defaultdict
 
+import ujson
+
 JSON_IMPLS = {
-    'ujson': ujson,
-    'pjson': pjson,
+    "ujson": ujson,
+    "pjson": pjson,
 }
 
 
@@ -54,14 +55,14 @@ def test_dumps_compatability():
 
     # Define the data we will test
     # data = {'a': [1, 2, 3, named_product]}
-    data = {'a': [1, 2, 3]}
+    data = {"a": [1, 2, 3]}
 
     # Define the parameters we will test
-    NULL_CHAR = '\x00'
-    UTF_SURROGATE0000 = '\udc80'
-    UTF_SURROGATE1024 = '\udfff'
+    NULL_CHAR = "\x00"
+    UTF_SURROGATE0000 = "\udc80"
+    UTF_SURROGATE1024 = "\udfff"
     param_basis = {
-        'indent': [
+        "indent": [
             # -1,
             # -2,
             # '    ',
@@ -73,19 +74,19 @@ def test_dumps_compatability():
             UTF_SURROGATE0000,
             # UTF_SURROGATE1024,
         ],
-        'ensure_ascii': [False],
+        "ensure_ascii": [False],
         # 'ensure_ascii': [True, False, None],
         # 'sort_keys': [True, False, None],
         # 'default': [None, str],
-        'module': list(JSON_IMPLS.keys()),
+        "module": list(JSON_IMPLS.keys()),
     }
-    kwargs_keys = ['indent', 'default', 'ensure_ascii', 'sort_keys']
+    kwargs_keys = ["indent", "default", "ensure_ascii", "sort_keys"]
     kwargs_keys = [k for k in kwargs_keys if k in param_basis]
     param_grid = named_product(param_basis)
     results = []
     for params in param_grid:
         params_key = pjson.dumps(params, default=str)
-        module = JSON_IMPLS[params['module']]
+        module = JSON_IMPLS[params["module"]]
         kwargs = {k: params[k] for k in kwargs_keys if k in params}
         try:
             result = module.dumps(data, **kwargs)
@@ -95,18 +96,18 @@ def test_dumps_compatability():
         else:
             error = 0
         row = {
-            'params_key': params_key,
+            "params_key": params_key,
             **params,
-            'data': data,
-            'result': result,
-            'error': error,
+            "data": data,
+            "result": result,
+            "error": error,
         }
         results.append(row)
 
-    print(pjson.dumps(results, indent='    ', default=repr))
+    print(pjson.dumps(results, indent="    ", default=repr))
 
     def grouper(row):
-        return tuple([(k, row[k]) for k in kwargs_keys])
+        return tuple((k, row[k]) for k in kwargs_keys)
 
     grouped_results = group_items(results, key=grouper)
 
@@ -115,20 +116,20 @@ def grouper(row):
 
     for group_key, group in grouped_results.items():
         assert len(group) == 2
-        module_to_row = {r['module']: r for r in group}
+        module_to_row = {r["module"]: r for r in group}
         assert len(module_to_row) == 2
 
-        ujson_row = module_to_row['ujson']
-        pjson_row = module_to_row['pjson']
+        ujson_row = module_to_row["ujson"]
+        pjson_row = module_to_row["pjson"]
 
-        if ujson_row['error'] and pjson_row['error']:
+        if ujson_row["error"] and pjson_row["error"]:
             # Both implementations errored
             agree_keys.append(group_key)
         else:
             # Check if the results from all implementations are the same
             agree_keys.append(group_key)
-            u_result = ujson_row['result']
-            p_result = pjson_row['result']
+            u_result = ujson_row["result"]
+            p_result = pjson_row["result"]
 
             try:
                 p_val = pjson.loads(p_result)
@@ -142,19 +143,20 @@ def grouper(row):
 
             if p_val != u_val:
                 import difflib
-                print(f'Disagree on {group_key}')
-                print(' * p_result = {!r}'.format(p_result))
-                print(' * u_result = {!r}'.format(u_result))
-                print(''.join(list(difflib.ndiff([str(p_val)], [str(u_val)]))))
+
+                print(f"Disagree on {group_key}")
+                print(f" * p_result = {p_result!r}")
+                print(f" * u_result = {u_result!r}")
+                print("".join(list(difflib.ndiff([str(p_val)], [str(u_val)]))))
                 diagree_keys.append(group_key)
             else:
                 agree_keys.append(group_key)
 
-    print('Num Agree: {}'.format(len(agree_keys)))
-    print('Num Disagree: {}'.format(len(diagree_keys)))
+    print(f"Num Agree: {len(agree_keys)}")
+    print(f"Num Disagree: {len(diagree_keys)}")
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     """
     CommandLine:
         python ~/code/ultrajson/tests/test_json_compat.py