some help with reading line from CMD on PI

[korenron]

Hello,
I'm a beginner , and up until now I did some simple code.

now I want to go up a level :-)

I want to run an application on my PI that scan bluetooth
I found this code

import pexpect
child = pexpect.spawn("bluetoothctl")
child.send("scan on\n")
bdaddrs = []

try:
    print("Scan Begin")
    while True:
        
        child.expect("Device (([0-9A-Fa-f]{2}:){5}([0-9A-Fa-f]{2})) ",timeout=None)
        bdaddr = child.match.group(1)
        if bdaddr not in bdaddrs:
           bdaddrs.append(bdaddr)
           print(bdaddr)
        
except KeyboardInterrupt:
    child.close()
    results.close()

it's working but I want to improve it and to read the RSSI and the name also ? how do I do this ?

also want to understand something
this line

child.expect.....

mean that the code is expecting the following (whats in the bracket , right?)
what does this line mean

child.match.group(1)

mean?


and finnaly - if I want to code to run the scan for 10 seconds only once every 1 min
what I need to add?

Thanks ,