module_file = tf.train.latest_checkpoint()的参数

[zjp1907]

module_file = tf.train.latest_checkpoint()
示例中怎么没有参数，无法运行。。。
这个方法的定义是：
def latest_checkpoint(checkpoint_dir, latest_filename=None):
"""Finds the filename of latest saved checkpoint file.

Args:
checkpoint_dir: Directory where the variables were saved.
latest_filename: Optional name for the protocol buffer file that
contains the list of most recent checkpoint filenames.
See the corresponding argument to Saver.save().

Returns:
The full path to the latest checkpoint or None if no checkpoint was found.
"""

Pick the latest checkpoint based on checkpoint state.

ckpt = get_checkpoint_state(checkpoint_dir, latest_filename)
if ckpt and ckpt.model_checkpoint_path:
# Look for either a V2 path or a V1 path, with priority for V2.
v2_path = _prefix_to_checkpoint_path(ckpt.model_checkpoint_path,
saver_pb2.SaverDef.V2)
v1_path = _prefix_to_checkpoint_path(ckpt.model_checkpoint_path,
saver_pb2.SaverDef.V1)
if file_io.get_matching_files(v2_path) or file_io.get_matching_files(
v1_path):
return ckpt.model_checkpoint_path
else:
logging.error("Couldn't match files for checkpoint %s",
ckpt.model_checkpoint_path)
return None

[tarzan]

any path is ok