參考：https://blog.csdn.net/cooco369/article/details/82999172 

from tensorflow.python.framework import tensor_util
from google.protobuf import text_format
import tensorflow as tf
from tensorflow.python.platform import gfile
from tensorflow.python.framework import tensor_util


GRAPH_PB_PATH = 'models/frozen_person_graph.pb' #path to your .pb file
with tf.Session() as sess:
	print("load graph")
	with gfile.FastGFile(GRAPH_PB_PATH,'rb') as f:
		graph_def = tf.GraphDef()
    # Note: one of the following two lines work if required libraries are available
		#text_format.Merge(f.read(), graph_def)
		graph_def.ParseFromString(f.read())
		tf.import_graph_def(graph_def, name='')
		for i,n in enumerate(graph_def.node):
			print("Name of the node - %s" % n.name)