Remove some unnecessary calls to list().

anntzer · anntzer · commit c66a2a6ebe65 · 2018-07-17T19:23:36.000+02:00
diff --git a/examples/color/colormap_reference.py b/examples/color/colormap_reference.py
@@ -52,7 +52,7 @@ def plot_color_gradients(cmap_category, cmap_list, nrows):
 
     for ax, name in zip(axes, cmap_list):
         ax.imshow(gradient, aspect='auto', cmap=plt.get_cmap(name))
-        pos = list(ax.get_position().bounds)
+        pos = ax.get_position().bounds
         x_text = pos[0] - 0.01
         y_text = pos[1] + pos[3]/2.
         fig.text(x_text, y_text, name, va='center', ha='right', fontsize=10)
diff --git a/lib/matplotlib/backend_tools.py b/lib/matplotlib/backend_tools.py
@@ -25,7 +25,7 @@
 
 class Cursors(object):
     """Simple namespace for cursor reference"""
-    HAND, POINTER, SELECT_REGION, MOVE, WAIT = list(range(5))
+    HAND, POINTER, SELECT_REGION, MOVE, WAIT = range(5)
 cursors = Cursors()
 
 # Views positions tool
diff --git a/lib/matplotlib/backends/qt_editor/formlayout.py b/lib/matplotlib/backends/qt_editor/formlayout.py
@@ -243,10 +243,8 @@ def setup(self):
             elif isinstance(value, str):
                 field = QtWidgets.QLineEdit(value, self)
             elif isinstance(value, (list, tuple)):
-                if isinstance(value, tuple):
-                    value = list(value)
-                selindex = value.pop(0)
                 field = QtWidgets.QComboBox(self)
+                selindex, *value = value
                 if isinstance(value[0], (list, tuple)):
                     keys = [key for key, _val in value]
                     value = [val for _key, val in value]
