Now, let's load the checkpoints. For more about saving and loading checkpoints, you can check out the TensorFlow documentation (https://www.tensorflow.org/programmers_guide/variables):

tf.train.get_checkpoint_state('checkpoints')

Output:
model_checkpoint_path: "checkpoints/i990_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i100_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i200_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i300_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i400_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i500_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i600_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i700_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i800_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i900_l512.ckpt"
all_model_checkpoint_paths: "checkpoints/i990_l512.ckpt"