Fix some erroneously formed 'except' statements

src/calibre/ebooks/metadata/meta.py

@@ -134,12 +134,12 @@ def metadata_from_filename(name, pat=None):
         try:
             si = match.group('series_index')
             mi.series_index = int(si)
-        except IndexError, ValueError:
+        except (IndexError, ValueError):
             pass
         try:
             si = match.group('isbn')
             mi.isbn = si
-        except IndexError, ValueError:
+        except (IndexError, ValueError):
             pass
     if not mi.title:
         mi.title = name

src/calibre/ebooks/mobi/reader.py

@@ -93,7 +93,7 @@ class BookHeader(object):
                           1252  : 'cp1252',
                           65001 : 'utf-8',
                           }[self.codepage]
-            except IndexError, KeyError:
+            except (IndexError, KeyError):
                 print '[WARNING] Unknown codepage %d. Assuming cp-1252'%self.codepage
                 self.codec = 'cp1252'