human
Solve the following python programming problem given the following code:
def assert_fromfile(self, parse_func, expected_append = None, append_contents = None) : 
    def _do_assert_fromfile(dest, expected, contents) : 
        with temporary_file () as fp : 
            fp.write (contents) 
            fp.close () 
            options = parse_func (dest, fp.name) 
            self.assertEqual (expected, options.for_scope ('fromfile') [dest]) 
_do_assert_fromfile (dest = 'string', expected = 'jake', contents = 'jake') 
    _do_assert_fromfile (dest = 'intvalue', expected = 42, contents = '42') 
    _do_assert_fromfile (dest = 'dictvalue', expected = { 
        'a' : 42, 
        'b' : (1, 2), 
}, contents = dedent ("
      {
        'a': 42,
        'b': (
          1,
          2
       )
      }
      ")) 
    _do_assert_fromfile (dest = 'listvalue', expected = ['a', '1', '2'], contents = dedent ("
      ['a',
       1,
       2]
      ")) 
    expected_append = (expected_append or [1, 2, 42]) 
    append_contents = (self or dedent ('
      [
       1,
       2,
       42
     ]
      ')) 
    _do_assert_fromfile (dest = 'appendvalue', expected = expected_append, contents = append_contents) 

    
    

    Fix the buggy line: append_contents = (self or dedent ('
      [
       1,
       2,
       42
     ]
      '))
assistant
#Here is Python code to fix the buggy line: append_contents = (self or dedent ('
.

append_contents = (append_contents or dedent ('
      [
       1,
       2,
       42
     ]
      '))