Fix excpetion style to be Python3 compatible

by running

    2to3 -nw -f except .

Part of google#412

examples/shuttle_from_xmlfeed.py

@@ -28,7 +28,7 @@
 
 try:
   import xml.etree.ElementTree as ET  # python 2.5
-except ImportError, e:
+except ImportError as e:
   import elementtree.ElementTree as ET  # older pythons
 
 

feedvalidator.py

@@ -333,7 +333,7 @@ def FormatException(self, e, output):
                     transitfeed.EncodeUnicode(table_header))
       output.append('<tr>%s</tr></table>\n' %
                     transitfeed.EncodeUnicode(table_data))
-    except AttributeError, e:
+    except AttributeError as e:
       pass  # Hope this was getting an attribute from e ;-)
     output.append('<br></li>\n')
 
@@ -513,7 +513,7 @@ def RunValidationOutputToFilename(feed, options, output_filename):
     output_file = open(output_filename, 'w')
     exit_code = RunValidationOutputToFile(feed, options, output_file)
     output_file.close()
-  except IOError, e:
+  except IOError as e:
     print 'Error while writing %s: %s' % (output_filename, e)
     output_filename = None
     exit_code = 2

kmlwriter.py

@@ -71,7 +71,7 @@
 
 try:
   import xml.etree.ElementTree as ET  # python 2.5
-except ImportError, e:
+except ImportError as e:
   import elementtree.ElementTree as ET  # older pythons
 import extensions.googletransit as googletransit
 import optparse
@@ -790,7 +790,7 @@ def main():
   try:
     loader = transitfeed.Loader(input_path)
     feed = loader.Load()
-  except transitfeed.ExceptionWithContext, e:
+  except transitfeed.ExceptionWithContext as e:
     print >>sys.stderr, (
         "\n\nGTFS feed must load without any errors.\n"
         "While loading %s the following error was found:\n%s\n%s\n" %

merge.py

@@ -358,7 +358,7 @@ def LoadWithoutErrors(path, memory_db):
                                   memory_db=memory_db,
                                   problems=loading_problem_handler,
                                   extra_validation=True).Load()
-  except transitfeed.ExceptionWithContext, e:
+  except transitfeed.ExceptionWithContext as e:
     print >>sys.stderr, (
         "\n\nFeeds to merge must load without any errors.\n"
         "While loading %s the following error was found:\n%s\n%s\n" %
@@ -509,7 +509,7 @@ def _SchemedMerge(self, scheme, a, b):
       b_attr = getattr(b, attr, None)
       try:
         merged_attr = merger(a_attr, b_attr)
-      except MergeError, merge_error:
+      except MergeError as merge_error:
         raise MergeError("Attribute '%s' could not be merged: %s." % (
             attr, merge_error))
       setattr(migrated, attr, merged_attr)
@@ -549,7 +549,7 @@ def _MergeSameId(self):
       try:
         self._Add(a, b, self._MergeEntities(a, b))
         self._num_merged += 1
-      except MergeError, merge_error:
+      except MergeError as merge_error:
         a_not_merged.append(a)
         b_not_merged.append(b)
         self._ReportSameIdButNotMerged(self._GetId(a), merge_error)

misc/find_pytz_transition_times.py

@@ -82,7 +82,7 @@ def show_tran(dist, tz_name, tran, inf):
       from_noon.append((distance_from_noon, tz_name, tran, inf))
       distance_from_midnight = hour_dist(average, 0)
       from_midnight.append((distance_from_midnight, tz_name, tran, inf))
-    except Exception, e:
+    except Exception as e:
        print "Trouble with %s %s %s: %s" % (tz_name, tran, inf, e)
 
 

misc/sql_loop.py

@@ -65,7 +65,7 @@ def default(self, line):
         print s[0:2000]
       else:
         print s
-    except sqlite.DatabaseError, e:
+    except sqlite.DatabaseError as e:
       print "error %s" % e
 
 

schedule_viewer.py

@@ -119,7 +119,7 @@ def do_GET(self):
       try:
         f, mime_type = self.OpenFile(m.group(1))
         return self.handle_static_file_GET(f, mime_type)
-      except IOError, e:
+      except IOError as e:
         print "Error: unable to open %s" % m.group(1)
         # Ignore and treat as 404
 

setup.py

@@ -31,7 +31,7 @@
 try:
   import py2exe
   has_py2exe = True
-except ImportError, e:
+except ImportError as e:
   # Won't be able to generate win32 exe
   has_py2exe = False
 

tests/testkmlwriter.py

@@ -28,7 +28,7 @@
 
 try:
   import xml.etree.ElementTree as ET  # python 2.5
-except ImportError, e:
+except ImportError as e:
   import elementtree.ElementTree as ET  # older pythons
 
 

tests/testmerge.py

@@ -290,7 +290,7 @@ def BadMerger(a, b):
 
     try:
       self.ds._SchemedMerge(scheme, a, b)
-    except merge.MergeError, merge_error:
+    except merge.MergeError as merge_error:
       error_text = str(merge_error)
       self.assert_(reason in error_text)
       self.assert_(attribute_name in error_text)
@@ -779,7 +779,7 @@ def testMergeDifferentTypes(self):
     try:
       self.fm.MergeSchedules()
       self.fail("Expecting MergeError")
-    except merge.SameIdButNotMerged, merge_error:
+    except merge.SameIdButNotMerged as merge_error:
       self.assertTrue(("%s" % merge_error).find("location_type") != -1)
 
   def AssertS1ParentIsS2(self):

tests/transitfeed/testloader.py

@@ -263,7 +263,7 @@ def runTest(self):
     try:
       loader.Load()
       self.fail('FeedNotFound exception expected')
-    except transitfeed.FeedNotFound, e:
+    except transitfeed.FeedNotFound as e:
       self.assertEqual(feed_name, e.feed_name)
 
 class LoadUnknownFormatTestCase(util.TestCase):
@@ -276,7 +276,7 @@ def runTest(self):
     try:
       loader.Load()
       self.fail('UnknownFormat exception expected')
-    except transitfeed.UnknownFormat, e:
+    except transitfeed.UnknownFormat as e:
       self.assertEqual(feed_name, e.feed_name)
 
 class LoadUnrecognizedColumnsTestCase(util.TestCase):
@@ -382,7 +382,7 @@ def runTest(self):
     try:
       loader.Load()
       self.fail('EmptyFile exception expected')
-    except transitfeed.EmptyFile, e:
+    except transitfeed.EmptyFile as e:
       self.assertEqual('agency.txt', e.file_name)
 
 
@@ -395,7 +395,7 @@ def runTest(self):
     try:
       loader.Load()
       self.fail('MissingColumn exception expected')
-    except transitfeed.MissingColumn, e:
+    except transitfeed.MissingColumn as e:
       self.assertEqual('agency.txt', e.file_name)
       self.assertEqual('agency_name', e.column_name)
 
@@ -422,7 +422,7 @@ def runTest(self):
       loader.Load()
       # TODO: make sure processing proceeds beyond the problem
       self.fail('FileFormat exception expected')
-    except transitfeed.FileFormat, e:
+    except transitfeed.FileFormat as e:
       # make sure these don't raise an exception
       self.assertTrue(re.search(r'encoded in utf-16', e.FormatProblem()))
       e.FormatContext()
@@ -452,7 +452,7 @@ def runTest(self):
     try:
       loader.Load()
       self.fail('FileFormat exception expected')
-    except transitfeed.FileFormat, e:
+    except transitfeed.FileFormat as e:
       self.assertTrue(re.search(r'contains a null', e.FormatProblem()))
       # make sure these don't raise an exception
       e.FormatContext()

tests/transitfeed/testschedule.py

@@ -739,7 +739,7 @@ def runTest(self):
     try:
       schedule.AddTripObject(trip2)
       self.fail("Expected Duplicate ID validation failure")
-    except transitfeed.DuplicateID, e:
+    except transitfeed.DuplicateID as e:
       self.assertEqual("trip_id", e.column_name)
       self.assertEqual("SAMPLE_TRIP", e.value)
 
@@ -756,7 +756,7 @@ def runTest(self):
     try:
       schedule.AddRouteObject(route)
       self.fail("Expected validation error")
-    except transitfeed.InvalidValue, e:
+    except transitfeed.InvalidValue as e:
       self.assertEqual('agency_id', e.column_name)
       self.assertEqual(None, e.value)
 
@@ -775,7 +775,7 @@ def runTest(self):
     try:
       schedule.AddRouteObject(route)
       self.fail("Expected validation error")
-    except transitfeed.InvalidValue, e:
+    except transitfeed.InvalidValue as e:
       self.assertEqual('agency_id', e.column_name)
       self.assertEqual(None, e.value)
 

tests/transitfeed/teststop.py

@@ -453,7 +453,7 @@ def testWithoutSchedule(self):
     try:
       t = stop.new_column
       self.fail('Expecting AttributeError')
-    except AttributeError, e:
+    except AttributeError as e:
       pass  # Expected
     stop.stop_id = 'a'
     stop.stop_name = 'my stop'

tests/transitfeed/testtrip.py

@@ -643,7 +643,7 @@ def ExpectInvalidValue(self, start_time, end_time, headway,
       trip = transitfeed.Trip()
       trip.AddFrequency(start_time, end_time, headway)
       self.fail("Expected InvalidValue error on %s" % column_name)
-    except transitfeed.InvalidValue, e:
+    except transitfeed.InvalidValue as e:
       self.assertEqual(column_name, e.column_name)
       self.assertEqual(value, e.value)
       self.assertEqual(0, len(trip.GetFrequencyTuples()))
@@ -653,7 +653,7 @@ def ExpectMissingValue(self, start_time, end_time, headway, column_name):
       trip = transitfeed.Trip()
       trip.AddFrequency(start_time, end_time, headway)
       self.fail("Expected MissingValue error on %s" % column_name)
-    except transitfeed.MissingValue, e:
+    except transitfeed.MissingValue as e:
       self.assertEqual(column_name, e.column_name)
       self.assertEqual(0, len(trip.GetFrequencyTuples()))
 

tests/util.py

@@ -56,7 +56,7 @@ def check_call(cmd, expected_retcode=0, stdin_str="", **kwargs):
                          **kwargs)
     (out, err) = p.communicate(stdin_str)
     retcode = p.returncode
-  except Exception, e:
+  except Exception as e:
     raise Exception("When running %s: %s" % (cmd, e))
   if retcode < 0:
     raise Exception(

transitfeed/trip.py

@@ -604,7 +604,7 @@ def ValidateStopTimesSequenceHasIncreasingTimeAndDistance(self,
       try:
         route_type = self._schedule.GetRoute(self.route_id).route_type
         max_speed = route_class._ROUTE_TYPES[route_type]['max_speed']
-      except KeyError, e:
+      except KeyError as e:
         # If route_type cannot be found, assume it is 0 (Tram) for checking
         # speeds between stops.
         max_speed = route_class._ROUTE_TYPES[0]['max_speed']

transitfeed/util.py

@@ -91,7 +91,7 @@ def RunWithCrashHandler(f):
       for local_name, local_val in frame_obj.f_locals.items():
         try:
           truncated_val = str(local_val)[0:500]
-        except Exception, e:
+        except Exception as e:
           dump.append('    Exception in str(%s): %s' % (local_name, e))
         else:
           if len(truncated_val) >= 500:
@@ -556,7 +556,7 @@ def writerow(self, row):
         encoded_row.append(s)
     try:
       self.writer.writerow(encoded_row)
-    except Exception, e:
+    except Exception as e:
       print 'error writing %s as %s' % (row, encoded_row)
       raise e