update var name

python/paddle/fluid/io.py

@@ -23,7 +23,7 @@ from . import core
 __all__ = [
     'save_vars', 'save_params', 'save_persistables', 'load_vars', 'load_params',
     'load_persistables', 'save_inference_model', 'load_inference_model',
-    'get_inference_program', 'save_checkpoint', 'restore_checkpoint'
+    'get_inference_program', 'save_checkpoint', 'load_checkpoint'
 ]
 
 
@@ -466,7 +466,7 @@ def save_checkpoint(executor,
     Save Variables to Checkpoint Directory
 
     :param dirname
-    :param keep_max
+    :param max_num_checkpoints
     :param save_secs
     :param main_program
     """
@@ -495,7 +495,7 @@ def save_checkpoint(executor,
     _lru_delete(dirname, max_num_checkpoints)
 
 
-def restore_checkpoint(executor, dirname=None, main_program=None):
+def load_checkpoint(executor, dirname=None, main_program=None):
     """
     Load Variables from Checkpint Dir
 
@@ -544,9 +544,9 @@ def _interval_secs_exceed(dirname, save_interval_secs):
     return True
 
 
-def _lru_delete(dirname, keep_max=3):
+def _lru_delete(dirname, max_num_checkpoints=3):
     """
-    retain checkpoint nums with keep_max
+    retain checkpoint nums with max_num_checkpoints
     """
     dirs = os.listdir(dirname)
     serials = []
@@ -556,11 +556,11 @@ def _lru_delete(dirname, keep_max=3):
         except ValueError:
             continue
 
-    if len(serials) <= keep_max:
+    if len(serials) <= max_num_checkpoints:
         return
 
     serials.sort(reverse=True)
-    serials = serials[keep_max:]
+    serials = serials[max_num_checkpoints:]
     for serial in serials:
         cur_dir = os.path.join(dirname, str(serial))
         shutil.rmtree(cur_dir)