add ydb deps

1 files changed, 17 insertions, 0 deletions

diff --git a/contrib/python/ipython/py3/IPython/utils/sentinel.py b/contrib/python/ipython/py3/IPython/utils/sentinel.py
new file mode 100644
index 0000000000..dc57a2591c
--- /dev/null
+++ b/contrib/python/ipython/py3/IPython/utils/sentinel.py
@@ -0,0 +1,17 @@
+"""Sentinel class for constants with useful reprs"""
+
+# Copyright (c) IPython Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+class Sentinel(object):
+
+    def __init__(self, name, module, docstring=None):
+        self.name = name
+        self.module = module
+        if docstring:
+            self.__doc__ = docstring
+
+
+    def __repr__(self):
+        return str(self.module)+'.'+self.name
+