class_docstr: Create a predictor that takes inputs from an :class:`InputSource`, instead of from feeds.
  An instance `pred` of :class:`FeedfreePredictor` can be called only by `pred()`, which returns
  a list of output values as defined in config.output_names.
class_docstr_tok: ["Create","a","predictor","that","takes","inputs","from","an",":","class",":","`","InputSource","`",",","instead","of","from","feeds",".","An","instance","`","pred","`","of",":","class",":","`","FeedfreePredictor","`","can","be","called","only","by","`","pred","(",")","`",",","which","returns","a","list","of","output","values","as","defined","in","config.output_names","."]
code: def __call__(self):
      return self._hooked_sess.run(self._output_tensors)
  
file_path: tensorpack/tensorpack/predict/feedfree.py
imports: from tensorflow.python.training.monitored_session import _HookedSession
  from ..callbacks import Callbacks
  from ..tfutils.tower import PredictTowerContext
  from .base import PredictorBase
label_desc: Use image node_id 4 for calling the FeedfreePredictor obj's underlying member method code with example usage: obj.__call__() and returns: self