What's the purpose of tf.app.flags in TensorFlow?

Question

I am reading some example codes in Tensorflow, I found following code

flags = tf.app.flags
FLAGS = flags.FLAGS
flags.DEFINE_float(\'learning_rate\', 0.01, \         


        

Answer 1

When you use tf.app.run(), you can transfer the variable very conveniently between threads using tf.app.flags. See this for further usage of tf.app.flags.