[1.5.X] Fixed #19204 -- Replaced python2-style exception syntax.

Thanks to garrison for the report and patch.

Backport of 4a71b84266 from master

django/utils/unittest/case.py

@@ -324,7 +324,7 @@ class TestCase(unittest.TestCase):
             success = False
             try:
                 self.setUp()
-            except SkipTest, e:
+            except SkipTest as e:
                 self._addSkip(result, str(e))
             except Exception:
                 result.addError(self, sys.exc_info())
@@ -333,7 +333,7 @@ class TestCase(unittest.TestCase):
                     testMethod()
                 except self.failureException:
                     result.addFailure(self, sys.exc_info())
-                except _ExpectedFailure, e:
+                except _ExpectedFailure as e:
                     addExpectedFailure = getattr(result, 'addExpectedFailure', None)
                     if addExpectedFailure is not None:
                         addExpectedFailure(self, e.exc_info)
@@ -349,7 +349,7 @@ class TestCase(unittest.TestCase):
                         warnings.warn("Use of a TestResult without an addUnexpectedSuccess method is deprecated",
                                       DeprecationWarning)
                         result.addFailure(self, sys.exc_info())
-                except SkipTest, e:
+                except SkipTest as e:
                     self._addSkip(result, str(e))
                 except Exception:
                     result.addError(self, sys.exc_info())
@@ -770,16 +770,16 @@ class TestCase(unittest.TestCase):
         """
         try:
             difference1 = set1.difference(set2)
-        except TypeError, e:
+        except TypeError as e:
             self.fail('invalid type when attempting set difference: %s' % e)
-        except AttributeError, e:
+        except AttributeError as e:
             self.fail('first argument does not support set difference: %s' % e)
 
         try:
             difference2 = set2.difference(set1)
-        except TypeError, e:
+        except TypeError as e:
             self.fail('invalid type when attempting set difference: %s' % e)
-        except AttributeError, e:
+        except AttributeError as e:
             self.fail('second argument does not support set difference: %s' % e)
 
         if not (difference1 or difference2):
@@ -980,7 +980,7 @@ class TestCase(unittest.TestCase):
             return _AssertRaisesContext(expected_exception, self, expected_regexp)
         try:
             callable_obj(*args, **kwargs)
-        except expected_exception, exc_value:
+        except expected_exception as exc_value:
             if isinstance(expected_regexp, basestring):
                 expected_regexp = re.compile(expected_regexp)
             if not expected_regexp.search(str(exc_value)):

django/utils/unittest/loader.py

@@ -89,7 +89,7 @@ class TestLoader(unittest.TestLoader):
         if use_load_tests and load_tests is not None:
             try:
                 return load_tests(self, tests, None)
-            except Exception, e:
+            except Exception as e:
                 return _make_failed_load_tests(module.__name__, e,
                                                self.suiteClass)
         return tests
@@ -295,7 +295,7 @@ class TestLoader(unittest.TestLoader):
                 else:
                     try:
                         yield load_tests(self, tests, pattern)
-                    except Exception, e:
+                    except Exception as e:
                         yield _make_failed_load_tests(package.__name__, e,
                                                       self.suiteClass)
 

django/utils/unittest/main.py

@@ -150,7 +150,7 @@ class TestProgram(object):
             else:
                 self.testNames = (self.defaultTest,)
             self.createTests()
-        except getopt.error, msg:
+        except getopt.error as msg:
             self.usageExit(msg)
 
     def createTests(self):

django/utils/unittest/suite.py

@@ -138,7 +138,7 @@ class TestSuite(BaseTestSuite):
         if setUpClass is not None:
             try:
                 setUpClass()
-            except Exception, e:
+            except Exception as e:
                 if isinstance(result, _DebugResult):
                     raise
                 currentClass._classSetupFailed = True
@@ -172,7 +172,7 @@ class TestSuite(BaseTestSuite):
         if setUpModule is not None:
             try:
                 setUpModule()
-            except Exception, e:
+            except Exception as e:
                 if isinstance(result, _DebugResult):
                     raise
                 result._moduleSetUpFailed = True
@@ -203,7 +203,7 @@ class TestSuite(BaseTestSuite):
         if tearDownModule is not None:
             try:
                 tearDownModule()
-            except Exception, e:
+            except Exception as e:
                 if isinstance(result, _DebugResult):
                     raise
                 errorName = 'tearDownModule (%s)' % previousModule
@@ -225,7 +225,7 @@ class TestSuite(BaseTestSuite):
         if tearDownClass is not None:
             try:
                 tearDownClass()
-            except Exception, e:
+            except Exception as e:
                 if isinstance(result, _DebugResult):
                     raise
                 className = util.strclass(previousClass)