json.loads(s)
returns error message like this:
ValueError: Invalid control character at: line 1 column 33 (char 33)
According to http://docs.python.org/2/library/json.html
"If strict is False (True is the default), then control characters will be allowed inside strings. Control characters in this context are those with character codes in the 0-31 range, including ' ' (tab), ' ', ' ' and ' '."
For example:
json.loads(json_str, strict=False)