Python Network Programming

More Pexpect features

In this section, we will look at more Pexpect features that might come in handy when certain situations arise.

If you have a slow or fast link to your remote device, the default expect() method timeout is 30 seconds, which can be increased or decreased via the timeout argument:

>>> child.expect('Username', timeout=5)

You can choose to pass the command back to the user using the interact() method. This is useful when you just want to automate certain parts of the initial task:

>>> child.sendline('show version | i V')19>>> child.expect('iosv-1#')0>>> child.beforeb'show version | i VrnCisco IOS Software, IOSv Software (VIOS-ADVENTERPRISEK9-M), Version 15.6(2)T, RELEASE SOFTWARE (fc2)rnProcessor board ID 9MM4BI7B0DSWK40KV1IIRrn' ...