code: def readline(self, *args):
      assert_(len(args) <= 1)
      v = self.input.readline(*args)
      assert_(type(v) is bytes)
      return v
  
imports: import re
  import sys
  import warnings
label_desc: Use image node_id 3 for calling the InputWrapper obj's underlying member method code with example usage: obj.readline() and returns: v