class_docstr: Box collection.
class_docstr_tok: ["Box","collection","."]
docstr: Returns number of boxes held in collection.
  
  This number is inferred at graph construction time rather than run-time.
  
  Returns:
    Number of boxes held in collection (integer) or None if this is not
      inferable at graph construction time.
docstr_tok: ["Returns","number","of","boxes","held","in","collection",".","This","number","is","inferred","at","graph","construction","time","rather","than","run-time",".","Returns",":","Number","of","boxes","held","in","collection","(","integer",")","or","None","if","this","is","not","inferable","at","graph","construction","time","."]
code: def num_boxes_static(self):
      """Returns number of boxes held in collection.
  
      This number is inferred at graph construction time rather than run-time.
  
      Returns:
        Number of boxes held in collection (integer) or None if this is not
          inferable at graph construction time.
      """
      return self.data["boxes"].get_shape().as_list()[0]
  
file_path: DALI/docs/examples/use_cases/tensorflow/efficientdet/pipeline/anchors_utils/box_list.py
imports: import tensorflow.compat.v1
label_desc: Use image node_id 3 for calling the BoxList obj's underlying member method code with example usage: obj.num_boxes_static() and returns: self