human
Solve the following python programming problem given the following code:
def _parse_pre_yarn_history_records(lines) : 
    'Yield records from the given sequence of lines. For example,
    a line like this:

    Task TASKID="task_201512311928_0001_m_000003"     TASK_TYPE="MAP" START_TIME="1451590341378"     SPLITS="/default-rack/172\\.31\\.22\\.226" .

    into a record like:

    {
        \'fields\': {\'TASKID\': \'task_201512311928_0001_m_00000\',
                   \'TASK_TYPE\': \'MAP\',
                   \'START_TIME\': \'1451590341378\',
                   \'SPLITS\': \'/default-rack/172.31.22.226\'},
        \'type\': \'Task\',
        \'line_num\': 0,
        \'num_lines\': 1,
    }

    This handles unescaping values, but doesn\'t do the further
    unescaping needed to process counters. It can also handle multi-line
    records (e.g. for Java stack traces).
    ' 
    def yield_record_strings(lines) : 
        record_lines = [] 
        start_line = 0 
        for (line_num, line) in enumerate (lines) : 
            record_lines.append (line) 
            if line.endswith (' .
') : 
                (yield (start_line, len (record_lines), ''.join (record_lines))) 
                record_lines = [] 
                start_line = (line_num + 1) 
for (start_line, num_lines, record_str) in yield_record_strings (lines) : 
        record_match = _PRE_YARN_HISTORY_RECORD.match (record_str) 
        if (not record_match) : 
            continue 
record_type = record_match.group ('type') 
        key_pairs = record_match.group ('key_pairs') 
        fields = { 
            
} 
        for m in _PRE_YARN_HISTORY_KEY_PAIR.finditer (key_pairs) : 
            key = m.group ('key') 
            value = _pre_yarn_history_unescape (m.group ('escaped_value')) 
            fields [key] = value 
(yield dict (fields = fields, num_lines = num_lines, start_line = key_pairs, type = record_type)) 

    
    

    Fix the buggy line: (yield dict (fields = fields, num_lines = num_lines, start_line = key_pairs, type = record_type))
assistant
#Here is Python program to fix the buggy line: (yield dict (fields = fields, num_lines = num_lines, start_line = key_pairs, type = record_type))
.

(yield dict (fields = fields, num_lines = num_lines, start_line = start_line, type = record_type))