matplotlib · dstansby · Dec 27, 2017 · Sep 9, 2017
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -2631,7 +2631,7 @@ def pie(self, x, explode=None, labels=None, colors=None,
             color_cycle = itertools.cycle(colors)
 
             def get_next_color():
-                return six.next(color_cycle)
+                return next(color_cycle)
 
         if radius is None:
             radius = 1
@@ -2880,7 +2880,7 @@ def errorbar(self, x, y, yerr=None, xerr=None,
             if 'color' in kwargs:
                 base_style['color'] = kwargs.pop('color')
         else:
-            base_style = six.next(self._get_lines.prop_cycler)
+            base_style = next(self._get_lines.prop_cycler)
 
         base_style['label'] = '_nolegend_'
         base_style.update(fmt_style_kwargs)

diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -197,12 +197,10 @@ def __call__(self, *args, **kwargs):
         return ret
 
     def get_next_color(self):
-        """
-        Return the next color in the cycle.
-        """
+        """Return the next color in the cycle."""
         if 'color' not in self._prop_keys:
             return 'k'
-        return six.next(self.prop_cycler)['color']
+        return next(self.prop_cycler)['color']
 
     def set_lineprops(self, line, **kwargs):
         assert self
8000
.command == 'plot', 'set_lineprops only works with "plot"'
@@ -275,7 +273,7 @@ def _getdefaults(self, ignore, *kwargs):
                for k in prop_keys):
             # Need to copy this dictionary or else the next time around
             # in the cycle, the dictionary could be missing entries.
-            default_dict = six.next(self.prop_cycler).copy()
+            default_dict = next(self.prop_cycler).copy()
             for p in ignore:
                 default_dict.pop(p, None)
         else:

diff --git a/lib/matplotlib/legend_handler.py b/lib/matplotlib/legend_handler.py
@@ -664,20 +664,16 @@ def create_artists(self, legend, orig_handle,
             pad = self._pad * fontsize
 
         if ndivide > 1:
-            width = (width - pad*(ndivide - 1)) / ndivide
+            width = (width - pad * (ndivide - 1)) / ndivide
 
-        xds = [xdescent - (width + pad) * i for i in range(ndivide)]
-        xds_cycle = cycle(xds)
+        xds_cycle = cycle(xdescent - (width + pad) * np.arange(ndivide))
 
         a_list = []
         for handle1 in orig_handle:
             handler = legend.get_legend_handler(handler_map, handle1)
-            _a_list = handler.create_artists(legend, handle1,
-                                             six.next(xds_cycle),
-                                             ydescent,
-                                             width, height,
-                                             fontsize,
-                                             trans)
+            _a_list = handler.create_artists(
+                legend, handle1,
+                next(xds_cycle), ydescent, width, height, fontsize, trans)
             a_list.extend(_a_list)
 
         return a_list

diff --git a/lib/matplotlib/sankey.py b/lib/matplotlib/sankey.py
@@ -748,7 +748,7 @@ def _get_angle(a, r):
             fc = kwargs.pop('fc', kwargs.pop('facecolor', None))
             lw = kwargs.pop('lw', kwargs.pop('linewidth', None))
         if fc is None:
-            fc = six.next(self.ax._get_patches_for_fill.prop_cycler)['color']
+            fc = next(self.ax._get_patches_for_fill.prop_cycler)['color']
         patch = PathPatch(Path(vertices, codes), fc=fc, lw=lw, **kwargs)
         self.ax.add_patch(patch)
 

diff --git a/lib/matplotlib/stackplot.py b/lib/matplotlib/stackplot.py
@@ -118,7 +118,7 @@ def stackplot(axes, x, *args, **kwargs):
     # Color between x = 0 and the first array.
     color = axes._get_lines.get_next_color()
     coll = axes.fill_between(x, first_line, stack[0, :],
-                             facecolor=color, label=six.next(labels, None),
+                             facecolor=color, label=next(labels, None),
                              **kwargs)
     coll.sticky_edges.y[:] = [0]
     r = [coll]
@@ -127,7 +127,6 @@ def stackplot(axes, x, *args, **kwargs):
     for i in xrange(len(y) - 1):
         color = axes._get_lines.get_next_color()
         r.append(axes.fill_between(x, stack[i, :], stack[i + 1, :],
-                                   facecolor=color,
-                                   label=six.next(labels, None),
+                                   facecolor=color, label=next(labels, None),
                                    **kwargs))
     return r
diff --git a/lib/mpl_toolkits/axisartist/clip_path.py b/lib/mpl_toolkits/axisartist/clip_path.py
@@ -156,7 +156,7 @@ def clip_line_to_rect(xline, yline, bbox):
 
     ccc = iter(["ro", "go", "rx", "bx"])
     for ttt in ticks:
-        cc = six.next(ccc)
+        cc = next(ccc)
         for (xx, yy), aa in ttt:
             plt.plot([xx], [yy], cc)