@@ -80,6 +80,7 @@ def wait_for(self, terminator):
             if buf.endswith(terminator):
                 return
 
+
 def _test_sigint_impl(backend, target_name, kwargs):
     import sys
     import matplotlib.pyplot as plt
@@ -100,11 +101,11 @@ def interupter():
     timer = threading.Timer(1, interupter)
     fig = plt.figure()
     fig.canvas.mpl_connect(
-        'draw_event', 
+        'draw_event',
         lambda *args: print('DRAW', flush=True)
     )
     fig.canvas.mpl_connect(
-        'draw_event', 
+        'draw_event',
         lambda *args: timer.start()
     )
     try: