copy_file now runs recursively when directory paths are supplied.

Author: Kincaid Savoie

pssh/ssh_client.py

@@ -25,6 +25,7 @@
 import logging
 import paramiko
 import os
+import itertools
 from socket import gaierror as sock_gaierror, error as sock_error
 from .exceptions import UnknownHostException, AuthenticationException, \
      ConnectionErrorException, SSHException