Turn ProxyCommand into a context manager

1 files changed, 4 insertions, 1 deletions

diff --git a/paramiko/proxy.py b/paramiko/proxy.py
index 8959b244..0664ac6e 100644
--- a/paramiko/proxy.py
+++ b/paramiko/proxy.py
@@ -26,9 +26,10 @@ from select import select
 import socket
 
 from paramiko.ssh_exception import ProxyCommandFailure
+from paramiko.util import ClosingContextManager
 
 
-class ProxyCommand(object):
+class ProxyCommand(ClosingContextManager):
     """
     Wraps a subprocess running ProxyCommand-driven programs.
 
@@ -36,6 +37,8 @@ class ProxyCommand(object):
     `.Transport` and `.Packetizer` classes. Using this class instead of a
     regular socket makes it possible to talk with a Popen'd command that will
     proxy traffic between the client and a server hosted in another machine.
+    
+    Instances of this class may be used as context managers.
     """
     def __init__(self, command_line):
         """