fix real information

Author: bernieyangmh

examples/batch_copy.py

@@ -16,9 +16,9 @@
 
 bucket = BucketManager(q)
 
-src_bucket_name = 'lower'
+src_bucket_name = ''
 
-target_bucket_name = 'simi'
+target_bucket_name = ''
 
 # force为true时强制同名覆盖, 字典的键为原文件，值为目标文件
 ops = build_batch_copy(src_bucket_name, {'src_key1': 'target_key1', 'src_key2': 'target_key2'}, target_bucket_name, force='true')