what workspace is my terminal in?

[Skaperen]

this script is intended for a Posix environment. it was developed and tested in Xubuntu 18.04 LTS with Python 3.6.8.

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from os import getpid
from subprocess import PIPE,Popen

def cmdout(cmd):
    with Popen(cmd,stdout=PIPE,universal_newlines=True) as proc:
        f = proc.stdout
        out = f.read()
        f.close()
    return out

def getmyterminal(p):
    while p>1:
        ps = psmap[p]
        if any('terminal' in ps[x] for x in range(4,len(ps))):
            return ps
        p = ps[2]
    return None

def printancestry(p):
    while p>1:
        print(psrec[p])
        p = psmap[p][2]
    print(psrec[p])
    return

pid = getpid()

psout = cmdout(['ps','-ef'])
psmap = {}
plist = []
psrec = {}
for line in psout.splitlines():
    ps = line.split()
    try:
        ps[1] = int(ps[1])
        ps[2] = int(ps[2])
    except ValueError:
        continue
    psmap[ps[1]] = ps
    plist.append(ps[1])
    psrec[ps[1]] = line

#printancestry(pid)

termps = getmyterminal(pid)
termpid = termps[1]
termppid = termps[2]
assert termppid == 1

wmout = cmdout(['wmctrl','-lp'])
ws = None
for line in wmout.splitlines():
    wm = line.split()
    try:
        wm[1] = int(wm[1])
        wm[2] = int(wm[2])
    except ValueError:
        continue
    if wm[2] == termpid:
        ws = wm[1]

if isinstance(ws,int):
    print(str(ws))

it can also be downloaded from http://ipal.net/python/termws.py if you prefer that method. its sha256 checksum is c2c3c7d838dd7c1200a3482d0edb766a3b9f76c5358c022c6e8bdc6dd68cb537.

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yeah, i know, line 10 is unnecessary since context management under with will close the pipe.