JSON strings are not allowed to contain control characters (characters in the range U+0000 through U+001F). However, simplejson will raise no exception when these characters are included in a string.

>>> simplejson.loads (u'["A\u001FZ"]') [u'A\x1fZ']

This means that users of simplejson must check the string manually to ensure it has no invalid characters contained in it.

this one is legit, I'll fix it in 1.8.1

resolved in r80