Refs #27857 -- Replaced json.loads() ValueError exception catching with JSONDecodeError.

django/contrib/admin/models.py

@@ -95,7 +95,7 @@ class LogEntry(models.Model):
         if self.change_message and self.change_message[0] == '[':
             try:
                 change_message = json.loads(self.change_message)
-            except ValueError:
+            except json.JSONDecodeError:
                 return self.change_message
             messages = []
             for sub_message in change_message:

django/contrib/messages/storage/cookie.py

@@ -157,7 +157,7 @@ class CookieStorage(BaseStorage):
                     # If we get here (and the JSON decode works), everything is
                     # good. In any other case, drop back and return None.
                     return json.loads(value, cls=MessageDecoder)
-                except ValueError:
+                except json.JSONDecodeError:
                     pass
         # Mark the data as used (so it gets removed) since something was wrong
         # with the data.

django/contrib/postgres/forms/hstore.py

@@ -28,7 +28,7 @@ class HStoreField(forms.CharField):
         if not isinstance(value, dict):
             try:
                 value = json.loads(value)
-            except ValueError:
+            except json.JSONDecodeError:
                 raise ValidationError(
                     self.error_messages['invalid_json'],
                     code='invalid_json',

django/contrib/postgres/forms/jsonb.py

@@ -29,7 +29,7 @@ class JSONField(forms.CharField):
             return value
         try:
             converted = json.loads(value)
-        except ValueError:
+        except json.JSONDecodeError:
             raise forms.ValidationError(
                 self.error_messages['invalid'],
                 code='invalid',
@@ -45,7 +45,7 @@ class JSONField(forms.CharField):
             return initial
         try:
             return json.loads(data)
-        except ValueError:
+        except json.JSONDecodeError:
             return InvalidJSONInput(data)
 
     def prepare_value(self, value):

django/contrib/staticfiles/storage.py

@@ -391,7 +391,7 @@ class ManifestFilesMixin(HashedFilesMixin):
             return OrderedDict()
         try:
             stored = json.loads(content, object_pairs_hook=OrderedDict)
-        except ValueError:
+        except json.JSONDecodeError:
             pass
         else:
             version = stored.get('version')

django/test/testcases.py

@@ -708,7 +708,7 @@ class SimpleTestCase(unittest.TestCase):
         """
         try:
             data = json.loads(raw)
-        except ValueError:
+        except json.JSONDecodeError:
             self.fail("First argument is not valid JSON: %r" % raw)
         if isinstance(expected_data, str):
             try:
@@ -725,12 +725,12 @@ class SimpleTestCase(unittest.TestCase):
         """
         try:
             data = json.loads(raw)
-        except ValueError:
+        except json.JSONDecodeError:
             self.fail("First argument is not valid JSON: %r" % raw)
         if isinstance(expected_data, str):
             try:
                 expected_data = json.loads(expected_data)
-            except ValueError:
+            except json.JSONDecodeError:
                 self.fail("Second argument is not valid JSON: %r" % expected_data)
         self.assertNotEqual(data, expected_data, msg=msg)