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Lib/fontTools/pens/qu2cuPen.py

@@ -62,8 +62,8 @@ class Qu2CuPen(ContourFilterPen):
         quadratics = []
         currentPt = None
         newContour = []
-        for op,args in contour:
-            if op == 'qCurveTo' and len(args) > 2 and args[-1] is not None:
+        for op, args in contour:
+            if op == "qCurveTo" and len(args) > 2 and args[-1] is not None:
                 quadratics.append((currentPt,) + args)
             else:
                 if quadratics:

Lib/fontTools/qu2cu/qu2cu.py

@@ -269,7 +269,7 @@ def spline_to_curves(q, tolerance=0.5, all_cubic=False):
     j = 0
     for i in reversed(splits):
         if not all_cubic and j + 1 == i:
-            curves.append(q[j:j+3])
+            curves.append(q[j : j + 3])
         else:
             curves.append(merge_curves(elevated_quadratics[j:i])[0])
         j = i