class_docstr: A class analogous to NaN that has operations defined for any type.
class_docstr_tok: ["A","class","analogous","to","NaN","that","has","operations","defined","for","any","type","."]
code: def _op(self, other):
      return self
  
imports: from __future__ import unicode_literals
  import os
  import time
  import subprocess
  import warnings
  import tempfile
  import pickle
  import pytest
label_desc: Use image node_id 1 for calling the NotAValueClass obj's underlying member method code with example usage: obj._op(other) and returns: self