py3 fixes for axes.py

Author: pwuertz

lib/matplotlib/axes.py

@@ -288,7 +288,7 @@ def _plot_args(self, tup, kwargs):
             linestyle, marker, color = _process_plot_format(tup[-1])
             tup = tup[:-1]
         elif len(tup) == 3:
-            raise ValueError, 'third arg must be a format string'
+            raise ValueError('third arg must be a format string')
         else:
             linestyle, marker, color = None, None, None
         kw = {}
@@ -1489,7 +1489,7 @@ def _update_line_limits(self, line):
             return
 
         line_trans = line.get_transform()
-        
+
         if line_trans == self.transData:
             data_path = path
 
@@ -1508,8 +1508,8 @@ def _update_line_limits(self, line):
             else:
                 data_path = trans_to_data.transform_path(path)
         else:
-            # for backwards compatibility we update the dataLim with the 
-            # coordinate range of the given path, even though the coordinate 
+            # for backwards compatibility we update the dataLim with the
+            # coordinate range of the given path, even though the coordinate
             # systems are completely different. This may occur in situations
             # such as when ax.transAxes is passed through for absolute
             # positioning.
@@ -1519,7 +1519,7 @@ def _update_line_limits(self, line):
             updatex, updatey = line_trans.contains_branch_seperately(
                                                                self.transData
                                                                     )
-            self.dataLim.update_from_path(data_path, 
+            self.dataLim.update_from_path(data_path,
                                           self.ignore_existing_data_limits,
                                           updatex=updatex,
                                           updatey=updatey)
@@ -2216,11 +2216,11 @@ def ticklabel_format(self, **kwargs):
                 cb = False
             else:
                 cb = True
-                raise NotImplementedError, "comma style remains to be added"
+                raise NotImplementedError("comma style remains to be added")
         elif style == '':
             sb = None
         else:
-            raise ValueError, "%s is not a valid style value"
+            raise ValueError("%s is not a valid style value")
         try:
             if sb is not None:
                 if axis == 'both' or axis == 'x':
@@ -3723,9 +3723,9 @@ def hlines(self, y, xmin, xmax, colors='k', linestyles='solid',
             xmax = np.resize( xmax, y.shape )
 
         if len(xmin)!=len(y):
-            raise ValueError, 'xmin and y are unequal sized sequences'
+            raise ValueError('xmin and y are unequal sized sequences')
         if len(xmax)!=len(y):
-            raise ValueError, 'xmax and y are unequal sized sequences'
+            raise ValueError('xmax and y are unequal sized sequences')
 
         verts = [ ((thisxmin, thisy), (thisxmax, thisy))
                             for thisxmin, thisxmax, thisy in zip(xmin, xmax, y)]
@@ -3802,9 +3802,9 @@ def vlines(self, x, ymin, ymax, colors='k', linestyles='solid',
             ymax = np.resize( ymax, x.shape )
 
         if len(ymin)!=len(x):
-            raise ValueError, 'ymin and x are unequal sized sequences'
+            raise ValueError('ymin and x are unequal sized sequences')
         if len(ymax)!=len(x):
-            raise ValueError, 'ymax and x are unequal sized sequences'
+            raise ValueError('ymax and x are unequal sized sequences')
 
         Y = np.array([ymin, ymax]).T
 
@@ -4785,7 +4785,7 @@ def make_iterable(x):
             if len(height) == 1:
                 height *= nbars
         else:
-            raise ValueError, 'invalid orientation: %s' % orientation
+            raise ValueError('invalid orientation: %s' % orientation)
 
         if len(linewidth) < nbars:
             linewidth *= nbars
@@ -4843,7 +4843,7 @@ def make_iterable(x):
                 bottom = [bottom[i] - height[i]/2. for i in xrange(len(bottom))]
 
         else:
-            raise ValueError, 'invalid alignment: %s' % align
+            raise ValueError('invalid alignment: %s' % align)
 
         args = zip(left, bottom, width, height, color, edgecolor, linewidth)
         for l, b, w, h, c, e, lw in args:
@@ -5718,7 +5718,7 @@ def computeConfInterval(data, med, iq, bootstrap):
                 else:
                     x = [x[:,i] for i in xrange(nc)]
             else:
-                raise ValueError, "input x can have no more than 2 dimensions"
+                raise ValueError("input x can have no more than 2 dimensions")
         if not hasattr(x[0], '__len__'):
             x = [x]
         col = len(x)
@@ -7086,10 +7086,10 @@ def _pcolorargs(self, funcname, *args):
 
         Nx = X.shape[-1]
         Ny = Y.shape[0]
-        if len(X.shape) <> 2 or X.shape[0] == 1:
+        if len(X.shape) != 2 or X.shape[0] == 1:
             x = X.reshape(1,Nx)
             X = x.repeat(Ny, axis=0)
-        if len(Y.shape) <> 2 or Y.shape[1] == 1:
+        if len(Y.shape) != 2 or Y.shape[1] == 1:
             y = Y.reshape(Ny, 1)
             Y = y.repeat(Nx, axis=1)
         if X.shape != Y.shape:
@@ -8834,9 +8834,9 @@ def __init__(self, fig, *args, **kwargs):
 
     def __reduce__(self):
         # get the first axes class which does not inherit from a subplotbase
-        axes_class = filter(lambda klass: (issubclass(klass, Axes) and
-                                           not issubclass(klass, SubplotBase)),
-                            self.__class__.mro())[0]
+        not_subplotbase = lambda c: issubclass(c, Axes) and \
+                                    not issubclass(c, SubplotBase)
+        axes_class = [c for c in self.__class__.mro() if not_subplotbase(c)][0]
         r = [_PicklableSubplotClassConstructor(),
              (axes_class,),
              self.__getstate__()]
@@ -8925,8 +8925,8 @@ def subplot_class_factory(axes_class=None):
 
 class _PicklableSubplotClassConstructor(object):
     """
-    This stub class exists to return the appropriate subplot 
-    class when __call__-ed with an axes class. This is purely to 
+    This stub class exists to return the appropriate subplot
+    class when __call__-ed with an axes class. This is purely to
     allow Pickling of Axes and Subplots.
     """
     def __call__(self, axes_class):