fix: black

Author: cvanelteren

ultraplot/_animation.py

@@ -139,6 +139,7 @@ def _axes_signature(self, ax):
     @staticmethod
     def _ticker_fingerprint(ticker):
         """Return a value that changes when a locator or formatter is retuned."""
+
         # Tickers are commonly reconfigured in place, e.g. set_useOffset(), which
         # alters every tick label without touching an artist's stale flag. Fold
         # their simple attributes into the signature so those changes are seen.

ultraplot/tests/test_animation.py

@@ -1542,6 +1542,8 @@ def test_axes_signature_does_not_dirty_a_clean_axes():
     axs[0].stale = True
     manager._axes_signature(axs[0])
     assert axs[0].stale
+
+
 def test_selective_draw_detects_mutable_ticker_state():
     """Retained layers must notice array-valued ticker parameter changes."""
     import matplotlib.ticker as mticker