fix version bug

csst_dfs_api/common/delegate.py

@@ -21,7 +21,7 @@ class Delegate(object):
                 log.warn("enviroment variable CSST_DFS_API_MODE is not set, use default: /opt/temp/csst")
                 self.local_path = "/opt/temp/csst"
             try:
-                from csst_dfs_api_local._version import version  as local_version
+                from csst_dfs_api_local.version import __version__  as local_version
             except ImportError:
                 raise CSSTFatalException("please install csst_dfs_api_local firstly.")
 
@@ -30,7 +30,7 @@ class Delegate(object):
             if not self.gateway:
                 raise CSSTGenericException("enviroment variable CSST_DFS_GATEWAY is not set")
             try:
-                from csst_dfs_api_cluster._version import version as cluster_version
+                from csst_dfs_api_cluster.version import __version__ as cluster_version
             except ImportError:
                 raise CSSTFatalException("please install csst_dfs_api_cluster firstly.")