class_docstr: Fake gym.spaces.box.Box to remove dependency on OpenAI gym.
code: def shape(self):
      return self.low.shape
  
file_path: CNTK/bindings/python/cntk/contrib/deeprl/tests/spaces.py
imports: import numpy
label_desc: Use image node_id 2 for calling the Box obj's underlying member method code with example usage: obj.shape() and returns: self