add ydb deps

1 files changed, 29 insertions, 0 deletions

diff --git a/contrib/python/prompt-toolkit/py2/prompt_toolkit/eventloop/callbacks.py b/contrib/python/prompt-toolkit/py2/prompt_toolkit/eventloop/callbacks.py
new file mode 100644
index 0000000000..04adab6fd4
--- /dev/null
+++ b/contrib/python/prompt-toolkit/py2/prompt_toolkit/eventloop/callbacks.py
@@ -0,0 +1,29 @@
+from __future__ import unicode_literals
+from abc import ABCMeta, abstractmethod
+from six import with_metaclass
+
+__all__ = (
+    'EventLoopCallbacks',
+)
+
+
+class EventLoopCallbacks(with_metaclass(ABCMeta, object)):
+    """
+    This is the glue between the :class:`~prompt_toolkit.eventloop.base.EventLoop`
+    and :class:`~prompt_toolkit.interface.CommandLineInterface`.
+
+    :meth:`~prompt_toolkit.eventloop.base.EventLoop.run` takes an
+    :class:`.EventLoopCallbacks` instance and operates on that one, driving the
+    interface.
+    """
+    @abstractmethod
+    def terminal_size_changed(self):
+        pass
+
+    @abstractmethod
+    def input_timeout(self):
+        pass
+
+    @abstractmethod
+    def feed_key(self, key):
+        pass