code: def parse(self, input, source=None, ignore={}):
      self.ignore = ignore
      self.parser = self.parsegen(input, source)
  
imports: from __future__ import generators
  import sys
  import re
  import copy
  import time
  import os.path
label_desc: Use image node_id 17 for calling the Preprocessor obj's underlying member method code with example usage: obj.parse(input, source, ignore) without return types