How to redirect telnet log to python script with server drop detection?

Question

Python

There is a task to redirect the telnet log to a Python script.
Implemented as follows:
Using expect, I log in to the server
Then I run <./expect-script.sh | ./mypython-script.sh>
But there is one problem. When the telnet server is rebooted, my script bundle doesn't catch the event and nothing happens.
Example expect script:

#!/usr/bin/expect -f
 
set timeout -1
spawn telnet mytelnet.server
expect "Username: "
send -- "username\r"
expect "Password: "
send -- "Password\r"
expect eof

Python script example:

for line in sys.stdin:
    # some magic
    line = line.rstrip('\n')
    print (line)

How to catch an event when the telnet server is rebooted and nothing gets into the log?

Answer 1

and nothing is logged

how do you know it's overloaded?