code: def fix_e712(self, result):
          
          (line_index, offset, target) = get_index_offset_contents(result,
                                                                   self.source)
  
          # Handle very easy "not" special cases.
          if re.match(r'^\s*if [\w."\'\[\]]+ == False:$', target):
              self.source[line_index] = re.sub(r'if ([\w."\'\[\]]+) == False:',
                                               r'if not \1:', target, count=1)
          elif re.match(r'^\s*if [\w."\'\[\]]+ != True:$', target):
              self.source[line_index] = re.sub(r'if ([\w."\'\[\]]+) != True:',
                                               r'if not \1:', target, count=1)
          else:
              right_offset = offset + 2
              if right_offset >= len(target):
                  return []
  
              left = target[:offset].rstrip()
              center = target[offset:right_offset]
              right = target[right_offset:].lstrip()
  
              # Handle simple cases only.
              new_right = None
              if center.strip() == '==':
                  if re.match(r'\bTrue\b', right):
                      new_right = re.sub(r'\bTrue\b *', '', right, count=1)
              elif center.strip() == '!=':
                  if re.match(r'\bFalse\b', right):
                      new_right = re.sub(r'\bFalse\b *', '', right, count=1)
  
              if new_right is None:
                  return []
  
              if new_right[0].isalnum():
                  new_right = ' ' + new_right
  
              self.source[line_index] = left + new_right
docs: Fix (trivial case of) comparison with boolean.