dash TypeError: 'NoneType' object is not callable code example

Example: typeerror 'nonetype' object is not callable paramiko

>>> import paramiko
 >>> ssh = paramiko.SSHClient()
 >>> ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
 >>> ssh.connect(ftpipaddress,username ='akar',password ='change')
 Traceback (most recent call last):
 File "<interactive input>", line 1, in <module>
 TypeError: 'NoneType' object is not iterable