I did the following on Raspberry Pi:
import subprocess
from time import sleep

try:
ssid = subprocess.check_output(["iwgetid", "-r"]).rstrip()
except subprocess.CalledProcessError:
ssid = ""

while True:
if ssid.decode('ascii') == 'mySSID':
print("connect")
else:
print("No connection")
sleep(1)

But this does not work for Omega-2

Ask yourself these questions:

1. Which f/w version are you running? Command is not supported in f/w b160.
2. Did you intend to use "iwinfo"? If so, it doesn't have a "-r" option.
3. Is there a specific s/w package you need to install to get the command you desire?

take care!
Bill

iwinfo

I entered: iwinfo -h
And received:
Usage:
        iwinfo <device> info
        iwinfo <device> scan
        iwinfo <device> txpowerlist
        iwinfo <device> freqlist
        iwinfo <device> assoclist
        iwinfo <device> countrylist
        iwinfo <device> htmodelist
        iwinfo <backend> phyname <section>

What is <device>?
What is f / w and s / w?

What is <device>?

type ifconfig then you see all your devices.
what you look for is apcli0

iwinfo apcli0 info

import subprocess
from time import sleep

ssid = subprocess.call(["uci","get","wireless.@wifi-iface[0].ApCliSsid"])

while True:
	if ssid == 'myssid':
		print("Connect")
		print(ssid)
	else:
		print("No nonnection")
		print(ssid)
	sleep(1)

But instead of myssid was output 1

import subprocess
from time import sleep

ssid = subprocess.check_output(["uci","get","wireless.@wifi-iface[0].ApCliSsid"])

while True:
	if ssid == 'myssid' + '\n':
		print("Connect")
		print(ssid)
	else:
		print("No nonnection")
		print(ssid)
	sleep(1)

uci: Entry not found
Traceback (most recent call last):
  File "/root/Wi-fi.py", line 5, in <module>
 ssid = subprocess.check_output(["uci","get","wireless.@wifi-iface[0].ApCliSsid"])
  File "/usr/lib/python3.6/subprocess.py", line 336, in check_output
    **kwargs).stdout
  File "/usr/lib/python3.6/subprocess.py", line 418, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['uci', 'get', 'wireless.@wifi-iface[0].ApCliSsid']' returned non-zero exit status 1.

uci: Entry not found

That means uci dind't find the enrty in the config file
try

uci show wireless

look for the entry that shows your ssid, it'll have a .ApCliSsid at the end.
copy that path and use it.

An Omega with warp core works more like how your laptop or smartphone work with wifi networks:

• stores configuration data for networks you've previously configured
• attempts to automatically connect to configured networks that are in range

All the details can be found here: https://onion.io/2bt-brand-new-os-release/

Firmware (f/w)
Software (s/w)
Hardware (h/w)

take care!
Bill

It stores configuration data for networks you've previously configured, and automatically connects to available networks. If there's multiple configured networks in range, it will connect to the network that is listed higher in the /etc/config/wireless configuration file. So the list of configured networks works like a preference list (kind of like how Mac OS does their Wifi networking).

If you want to manually trigger a network reconnect, just run the wifi command.

root@Omega-66FF:~# iwinfo apcli0 info
apcli0    ESSID: "MyNetworkName"
....

If you don't feel like doing multi-line text manipulation in Python, you can isolate the network name as well:

root@Omega-66FF:~# iwinfo apcli0 info | grep ESSID | awk '{print $3}' | sed -e 's/"//g'
MyNetworkName