subprocess syntaxerr on try to tpcdump with python-CodePudding

#old version of setting the command
#command = 'sudo tcpdump "type mgt subtype beacon and ether src '  bssid.get()  '" -I -c 1 -i en0 -w beacon.cap'
#command = command.split()

#improved but error still exists
command = ['sudo', 'tcpdump', '"type mgt subtype beacon and ether src '   bssid.get()   '"', '-I', '-c', '1', '-i', 'en0', '-w', 'beacon.cap']

cmd1 = subprocess.Popen(['echo',sudo_password], stdout=subprocess.PIPE)
cmd2 = subprocess.Popen(['sudo','-S']   command, stdin=cmd1.stdout, stdout=subprocess.PIPE)
output = cmd2.stdout.read().decode() 
print("Task2completed: "   output   "2END")

Hello stackoverflow,

I have a question about subprocess, in the previous code snippet is the problem, that I only get an syntax error:

tcpdump: can't parse filter expression: syntax error

I cannot reproduce why this error occurs, I tried typing it manually in the terminal, then it works. I also tried set $BSSID and use it in the command instead of

'  bssid.get()  '

but that also DIDNT worked...

Im pretty sure there is also no problem with bssid.get(), because if I print the command out and then use it in the command line it works... I thought of some kinda' error while splitting the command?? But correct me if im wrong!

Thanks very much for your help !