human
Solve the following python programming problem given the following code:
def _parse_example(self, m, name, lineno) : 
    "
        Given a regular expression match from `_EXAMPLE_RE` (`m`),
        return a pair `(source, want)`, where `source` is the matched
        example's source code (with prompts and indentation stripped);
        and `want` is the example's expected output (with indentation
        stripped).

        `name` is the string's name, and `lineno` is the line number
        where the example starts.
both are used for error messages.

        >>> def parseit(s):
        ...     p = LongFormDocTestParser()
        ...     return p._parse_example(p._EXAMPLE_RE.search(s), '<string>', 1)
        >>> parseit('>>> 1\
1')
        ('1', {}, '1', None)
        >>> parseit('>>> (1\
... +1)\
2')
        ('(1\
+1)', {}, '2', None)
        >>> parseit('.. run:\
\
    test1\
    test2\
')
        ('test1\
test2', {}, '', None)
        " 
    runner = (m.group ('run') or '') 
    indent = len (m.group (('%sindent' % runner))) 
    source_lines = m.group (('%ssource' % runner)).split ('
') 
    if runner : 
        self._check_prefix (source_lines [1 :], (' ' * indent), name, lineno) 
else : 
        self._check_prompt_blank (source_lines, indent, name, lineno) 
        self._check_prefix (source_lines [2 :], ((' ' * indent) + '.'), name, lineno) 
if runner : 
        source = '
'.join ([sl [indent :] for sl in source_lines]) 
else : 
        source = '
'.join ([sl [(indent + 4) :] for sl in source_lines]) 
if runner : 
        want = '' 
        exc_msg = None 
else : 
        want = m.group ('want') 
        want_lines = want.split ('
') 
        if ((len (want_lines) > 1) and re.match (' *$', want_lines [(- 1)])) : 
            del name [(- 1)] 
self._check_prefix (want_lines, (' ' * indent), name, (lineno + len (source_lines))) 
        want = '
'.join ([wl [indent :] for wl in want_lines]) 
        m = self._EXCEPTION_RE.match (want) 
        if m : 
            exc_msg = m.group ('msg') 
else : 
            exc_msg = None 
options = self._find_options (source, name,...

    
    

    Fix the buggy line: del name [(- 1)]
assistant
#Here is Python program to fix the buggy line: del name [(- 1)]
.

del want_lines [(- 1)]