numdecs deprecation: tidy up

Author: rcomer

lib/matplotlib/tests/test_ticker.py

@@ -11,7 +11,6 @@
 import matplotlib as mpl
 import matplotlib.pyplot as plt
 import matplotlib.ticker as mticker
-from matplotlib._api import MatplotlibDeprecationWarning
 
 
 class TestMaxNLocator:
@@ -234,10 +233,10 @@ def test_set_params(self):
         See if change was successful. Should not raise exception.
         """
         loc = mticker.LogLocator()
-        with pytest.warns(MatplotlibDeprecationWarning, match="numdecs"):
+        with pytest.warns(mpl.MatplotlibDeprecationWarning, match="numdecs"):
             loc.set_params(numticks=7, numdecs=8, subs=[2.0], base=4)
         assert loc.numticks == 7
-        with pytest.warns(MatplotlibDeprecationWarning, match="numdecs"):
+        with pytest.warns(mpl.MatplotlibDeprecationWarning, match="numdecs"):
             assert loc.numdecs == 8
         assert loc._base == 4
         assert list(loc._subs) == [2.0]

lib/matplotlib/ticker.py

@@ -2269,7 +2269,8 @@ def set_params(self, base=None, subs=None, numdecs=None, numticks=None):
         if numticks is not None:
             self.numticks = numticks
 
-    numdecs = _api.deprecate_privatize_attribute("3.8", addendum="This attribute has no effect.")
+    numdecs = _api.deprecate_privatize_attribute(
+        "3.8", addendum="This attribute has no effect.")
 
     def _set_subs(self, subs):
         """