code: def drop_constraints(quiet=True, stdout=None):
      
  
      results, meta = db.cypher_query("CALL db.constraints()")
      pattern = re.compile(':(.*) \).*\.(\w*)')
      for constraint in results:
          db.cypher_query('DROP ' + constraint[0])
          match = pattern.search(constraint[0])
          stdout.write(''' - Droping unique constraint and index on label {0} with property {1}.\n'''.format(
              match.group(1), match.group(2)))
      stdout.write("\n")
docs: Discover and drop all constraints.
  
      :type: bool
      :return: None