human
Solve the following python programming problem given the following code:
def __init__(self, editwin, index) : 
    'To initialize, analyze the surroundings of the given index.' 
    self.editwin = editwin 
    self.text = text = editwin.text 
    parser = PyParse.Parser (editwin.indentwidth, editwin.tabwidth) 
    def index2line(index) : 
        return int (float (index)) 
lno = index2line (text.index (index)) 
    if (not editwin.context_use_ps1) : 
        for context in editwin.num_context_lines : 
            startat = max ((lno - context), 1) 
            startatindex = (repr (startat) + '.0') 
            stopatindex = ('%d.end' % lno) 
            parser.set_str ((text.get (startatindex, stopatindex) + ' 
')) 
            bod = parser.find_good_parse_start (editwin._build_char_in_string_func (startatindex)) 
            if ((bod is not None) or (startat == 1)) : 
                break 
parser.set_lo ((bod or 0)) 
else : 
        r = text.tag_prevrange ('console', index) 
        if r : 
            startatindex = r [1] 
else : 
            startatindex = '1.0' 
stopatindex = ('%d.end' % parser) 
        parser.set_str ((text.get (startatindex, stopatindex) + ' 
')) 
        parser.set_lo (0) 
self.rawtext = parser.str [: (- 2)] 
    self.stopatindex = stopatindex 
    self.bracketing = parser.get_last_stmt_bracketing () 
    self.isopener = [((i > 0) and (self.bracketing [i] [1] > self.bracketing [(i - 1)] [1])) for i in range (len (self.bracketing))] 
    self.set_index (index) 

    
    

    Fix the buggy line: stopatindex = ('%d.end' % parser)
assistant
#Here is Python code to fix the buggy line: stopatindex = ('%d.

stopatindex = ('%d.end' % lno)