code: def ondisk(data):
      if hasattr(data, "ondisk"):
          return data.ondisk()
  
      ondisk = is_iter(data) and (
          type(data).__name__ not in ["NumpyArrayIterator"]
      )
      return ondisk
  
imports: from .imports import *
  from subprocess import Popen
label_desc: Use image node_id 19 for calling a global function with example usage: ondisk(data) and returns: ondisk, data