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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def IsDeletedOrDefault(clean_lines, linenum):
 """Check if current constructor or operator is deleted or default. Args: clean_lines: A CleansedLines instance containing the file. linenum: The number of the line to check. Returns: True if this is a deleted or default constructor. """

  open_paren = clean_lines.elided[linenum].find('(')
  if open_paren < 0:
    return False
  (close_line, _, close_paren) = CloseExpression(
      clean_lines, linenum, open_paren)
  if close_paren < 0:
    return False
  return Match(r'\s*=\s*(?:delete|default)\b', close_line[close_paren:])