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Author: jsignell

pandas/tests/plotting/test_backend.py

@@ -9,7 +9,7 @@
 import pandas
 
 dummy_backend = types.ModuleType("pandas_dummy_backend")
-dummy_backend.plot = lambda *args, **kwargs: 'used_dummy'
+dummy_backend.plot = lambda *args, **kwargs: "used_dummy"
 
 
 @pytest.fixture
@@ -40,12 +40,10 @@ def test_backend_is_correct(monkeypatch, restore_backend):
 
 def test_backend_can_be_set_in_plot_call(monkeypatch, restore_backend):
     monkeypatch.setitem(sys.modules, "pandas_dummy_backend", dummy_backend)
-    df = pandas.DataFrame([1,2,3])
+    df = pandas.DataFrame([1, 2, 3])
 
     assert pandas.get_option("plotting.backend") == "matplotlib"
-    assert (
-        df.plot(backend='pandas_dummy_backend') == 'used_dummy'
-    )
+    assert df.plot(backend="pandas_dummy_backend") == "used_dummy"
 
 
 @td.skip_if_no_mpl