code: def readlines(self, *args):
      assert_(len(args) <= 1)
      lines = self.input.readlines(*args)
      assert_(type(lines) is list)
      for line in lines:
          assert_(type(line) is bytes)
      return lines
  
imports: import re
  import sys
  import warnings
label_desc: Use image node_id 4 for calling the InputWrapper obj's underlying member method code with example usage: obj.readlines() and returns: lines