channel.exit_status_ready() doesn't return True

[Azteker]

Here is how I open the ssh channel:

self.ssh_client = paramiko.SSHClient()

self.ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())

self.ssh_client.connect(username=username, password=password, hostname=hostname, port=22, timeout=30, banner_timeout=30)

transport = self.ssh_client.get_transport()

self.channel = transport.open_session()

self.channel.get_pty(term='xterm', width=pty_width, height=pty_height)

self.channel.invoke_shell()

The problem is in the code of receiving data:

while not self.channel.exit_status_ready():

        data = self.channel.recv(1024).decode('utf-8')

The while loop never ends when the ssh is on, the channel is in blocking mode. The process has finished. But exit_status_ready() never returns a True, so it blocks at channel.recv(). What is wrong ?