human
Solve the following python programming problem given the following code:
def SymbolicateBacktraceLines(self, lines) : 
    path_to_addrs = defaultdict (dict) 
    path_to_base = { 
        
} 
    path_to_corrected_base = { 
        
} 
    path_to_arch = { 
        
} 
    for line in lines : 
        match = kBacktraceRE.match (line) 
        if (not match) : 
            continue 
addr = match.group ('address') 
        base = match.group ('base') 
        image = Symbolicator.FindBinaryImageByAddress (addr) 
        if (not image) : 
            continue 
path = Symbolicator.FindPathByUuid (image [3], image [2], image [4]) 
        if (not path) : 
            continue 
path_to_arch [path] = image [4] 
        path_to_base [path] = base 
        path_to_addrs [path] [addr] = (int (addr, 16) - int (image [0])) 
addr_to_symbol = { 
        
} 
    for (path, addrs) in path_to_addrs.items () : 
        corrected_addresses = addrs.values () 
        addrs = addrs.keys () 
        symbols = Symbolicator.LookupSymbols (path, path_to_arch [path], path_to_base [path], addrs) 
        for i in xrange (0, len (addrs)) : 
            addr_to_symbol [addrs [i]] = (symbols [i], corrected_addresses [i]) 
is_crashed_thread = False 
    for line in lines : 
        def _AppendLine(to_append) : 
            if is_crashed_thread : 
                self.crashed_thread_backtrace_output += to_append 
else : 
                self.backtrace_output += to_append 
stripped_line = line.strip () 
        if kThreadTraceStartRE.match (stripped_line) : 
            is_crashed_thread = stripped_line.endswith ('Crashed:') 
            if is_crashed_thread : 
                self.crashed_thread_title_output = line 
                continue 
match = kBacktraceRE.match (line) 
        if (not match) : 
            _AppendLine (line) 
            continue 
addr = match.group ('address') 
        (symbol, corrected_address) = addr_to_symbol.get (addr, ('unknown', 0)) 
        if kHexadecimalNumRE.match (symbol) : 
            symbol = 'unknown' 
_AppendLine (('%-30s %s
' % (match [0 : match.end ('bundle_id')], symbol))) 

    
    

    Fix the buggy line: _AppendLine (('%-30s %s
' % (match [0 : match.end ('bundle_id')], symbol)))
assistant
#Here is Python code to fix the buggy line: _AppendLine (('%-30s %s
.

_AppendLine (('%-30s %s
' % (line [0 : match.end ('bundle_id')], symbol)))