Environment variables when using ssh

[sla-te]

According to the docs we can run subcommands based of any command (including ssh), how does passing _env apply to subcommands? if i do:

import sh
myserver = sh.ssh(...)
new_env = os.environ.copy()
new_env["NEW_VAR"] = "1"
myserver.printenv(_env=new_env)

Would the environment variable I set actually get passed through the SSH session and become usable when I call printenv or a command, that would require the variable to be set?

[amoffat]

It would be available to the ssh process, and if the ssh process forwards environment variables to the connected server, then yes, but I strongly suspect the ssh process doesn't do that for security reasons.