Don't create exception objects unless absolutely necessary -- they are much more expensive on Pyhton 3.x

mdboom · mdboom · commit d7132ebe12bc · 2011-03-11T14:16:27.000-05:00
diff --git a/lib/matplotlib/backends/backend_ps.py b/lib/matplotlib/backends/backend_ps.py
@@ -1312,7 +1312,7 @@ def convert_psfrags(tmpfile, psfrags, font_preamble, custom_preamble,
     else:
         try:
             latexh.write(s)
-        except UnicodeEncodeError as err:
+        except UnicodeEncodeError:
             verbose.report("You are using unicode and latex, but have "
                            "not enabled the matplotlib 'text.latex.unicode' "
                            "rcParam.", 'helpful')
diff --git a/lib/matplotlib/backends/tkagg.py b/lib/matplotlib/backends/tkagg.py
@@ -10,7 +10,7 @@ def blit(photoimage, aggimage, bbox=None, colormode=1):
         bbox_array = None
     try:
         tk.call("PyAggImagePhoto", photoimage, id(aggimage), colormode, id(bbox_array))
-    except Tk.TclError as v:
+    except Tk.TclError:
         try:
             try:
                 _tkagg.tkinit(tk.interpaddr(), 1)
diff --git a/lib/matplotlib/fontconfig_pattern.py b/lib/matplotlib/fontconfig_pattern.py
@@ -128,7 +128,8 @@ def parse(self, pattern):
         try:
             self._parser.parseString(pattern)
         except self.ParseException as e:
-            raise ValueError("Could not parse font string: '%s'\n%s" % (pattern, e))
+            raise ValueError(
+                "Could not parse font string: '%s'\n%s" % (pattern, e))
 
         self._properties = None
 
diff --git a/lib/matplotlib/ticker.py b/lib/matplotlib/ticker.py
@@ -506,7 +506,7 @@ def _formatSciNotation(self, s):
             else:
                 s = ('%se%s%s' %(significand, sign, exponent)).rstrip('e')
                 return s
-        except IndexError as msg:
+        except IndexError:
             return s
 
 
