(s, end, encoding=None, strict=True, _b=BACKSLASH, _m=STRINGCHUNK.match)
return u''.join(chunks), end
Scan the string s for a JSON string. End is the index of the
    character in s after the quote that started the JSON string.
    Unescapes all valid JSON string escape sequences and raises ValueError
    on attempt to decode an invalid string. If strict is False then literal
    control characters are allowed in the string.
    
    Returns a tuple of the decoded string and the index of the character in s
    after the end quote.
Scan the string s for a JSON string. End is the index of the
    character in s after the quote that started the JSON string.
    Unescapes all valid JSON string escape sequences and raises ValueError
    on attempt to decode an invalid string. If strict is False then literal
    control characters are allowed in the string.
    
    Returns a tuple of the decoded string and the index of the character in s
    after the end quote.
Scan the string s for a JSON string . End is the index of the character in s after the quote that started the JSON string . Unescapes all valid JSON string escape sequences and raises ValueError on attempt to decode an invalid string . If strict is False then literal control characters are allowed in the string . Returns a tuple of the decoded string and the index of the character in s after the end quote .
def forgiving_scanstring(s, end, encoding=None, strict=True, _b=BACKSLASH, _m=STRINGCHUNK.match):
    """Scan the string s for a JSON string. End is the index of the
    character in s after the quote that started the JSON string.
    Unescapes all valid JSON string escape sequences and raises ValueError
    on attempt to decode an invalid string. If strict is False then literal
    control characters are allowed in the string.
    
    Returns a tuple of the decoded string and the index of the character in s
    after the end quote."""
    if encoding is None:
        encoding = DEFAULT_ENCODING
    chunks = []
    _append = chunks.append
    begin = end - 1
    while 1:
        chunk = _m(s, end)
        if chunk is None:
            raise ValueError(
                errmsg("Unterminated string starting at", s, begin))
        end = chunk.end()
        content, terminator = chunk.groups()
        # Content is contains zero or more unescaped string characters
        if content:
            if not isinstance(content, unicode):
                content = unicode(content, encoding, errors="replace")
            _append(content)
        # Terminator is the end of string, a literal control character,
        # or a backslash denoting that an escape sequence follows
        if terminator == '"':
            break
        elif terminator != '\\':
            if strict:
                msg = "Invalid control character %r at" % (terminator,)
                #msg = "Invalid control character {0!r} at".format(terminator)
                raise ValueError(errmsg(msg, s, end))
            else:
                _append(terminator)
                continue
        try:
            esc = s[end]
        except IndexError:
            raise ValueError(
                errmsg("Unterminated string starting at", s, begin))
        # If not a unicode escape sequence, must be in the lookup table
        if esc != 'u':
            try:
                char = _b[esc]
            except KeyError:
                msg = "Invalid \\escape: " + repr(esc)
                raise ValueError(errmsg(msg, s, end))
            end += 1
        else:
            # Unicode escape sequence
            esc = s[end + 1:end + 5]
            next_end = end + 5
            if len(esc) != 4:
                msg = "Invalid \\uXXXX escape"
                raise ValueError(errmsg(msg, s, end))
            uni = int(esc, 16)
            # Check for surrogate pair on UCS-4 systems
            if 0xd800 <= uni <= 0xdbff and sys.maxunicode > 65535:
                msg = "Invalid \\uXXXX\\uXXXX surrogate pair"
                if not s[end + 5:end + 7] == '\\u':
                    raise ValueError(errmsg(msg, s, end))
                esc2 = s[end + 7:end + 11]
                if len(esc2) != 4:
                    raise ValueError(errmsg(msg, s, end))
                uni2 = int(esc2, 16)
                uni = 0x10000 + (((uni - 0xd800) << 10) | (uni2 - 0xdc00))
                next_end += 6
            char = unichr(uni)
            end = next_end
        # Append the unescaped character
        _append(char)
    return u''.join(chunks), end
def forgiving_scanstring ( s , end , encoding = None , strict = True , _b = BACKSLASH , _m = STRINGCHUNK . match ) : if encoding is None : encoding = DEFAULT_ENCODING chunks = [ ] _append = chunks . append begin = end - 1 while 1 : chunk = _m ( s , end ) if chunk is None : raise ValueError ( errmsg ( "Unterminated string starting at" , s , begin ) ) end = chunk . end ( ) content , terminator = chunk . groups ( ) # Content is contains zero or more unescaped string characters if content : if not isinstance ( content , unicode ) : content = unicode ( content , encoding , errors = "replace" ) _append ( content ) # Terminator is the end of string, a literal control character, # or a backslash denoting that an escape sequence follows if terminator == '"' : break elif terminator != '\\' : if strict : msg = "Invalid control character %r at" % ( terminator , ) #msg = "Invalid control character {0!r} at".format(terminator) raise ValueError ( errmsg ( msg , s , end ) ) else : _append ( terminator ) continue try : esc = s [ end ] except IndexError : raise ValueError ( errmsg ( "Unterminated string starting at" , s , begin ) ) # If not a unicode escape sequence, must be in the lookup table if esc != 'u' : try : char = _b [ esc ] except KeyError : msg = "Invalid \\escape: " + repr ( esc ) raise ValueError ( errmsg ( msg , s , end ) ) end += 1 else : # Unicode escape sequence esc = s [ end + 1 : end + 5 ] next_end = end + 5 if len ( esc ) != 4 : msg = "Invalid \\uXXXX escape" raise ValueError ( errmsg ( msg , s , end ) ) uni = int ( esc , 16 ) # Check for surrogate pair on UCS-4 systems if 0xd800 <= uni <= 0xdbff and sys . maxunicode > 65535 : msg = "Invalid \\uXXXX\\uXXXX surrogate pair" if not s [ end + 5 : end + 7 ] == '\\u' : raise ValueError ( errmsg ( msg , s , end ) ) esc2 = s [ end + 7 : end + 11 ] if len ( esc2 ) != 4 : raise ValueError ( errmsg ( msg , s , end ) ) uni2 = int ( esc2 , 16 ) uni = 0x10000 + ( ( ( uni - 0xd800 ) << 10 ) | ( uni2 - 0xdc00 ) ) next_end += 6 char = unichr ( uni ) end = next_end # Append the unescaped character _append ( char ) return u'' . join ( chunks ) , end