Log Message:
py-pexpect: updated to 4.6.0

Version 4.6
The pxssh.login() method now supports an ssh_config parameter, which can be used \ 
to specify a file path to an SSH config file.
Improved compatability for the crlf parameter of PopenSpawn
Fixed an issue in read timeout handling when using spawn and fdspawn with the \ 
use_poll parameter