A python curses script to interactively view SGE qstat output

pqstat.py

#!/usr/bin/env python
import curses
import subprocess
import sys
from datetime import datetime
AUTHOR = "Jonathan Mackenzie"
NAME = "pqstat"
def get_qstat(args):
    return subprocess.Popen(['qstat']+args,stdout=subprocess.PIPE).communicate()[0]
def main(scr):
    scr.nodelay(1)
    scr.clear()
    curses.curs_set(0)
    try:
        while True:
            txt = get_qstat(sys.argv[1:])
            now = datetime.now()
            scr.erase()
            height, width = scr.getmaxyx()
            tstr = now.strftime("%A %d %B %H:%M:%S")
            scr.addstr(0, 0, tstr, curses.A_BOLD)
            scr.addstr(0, len(tstr)+2, "q to exit")
            msg = NAME + " by " + AUTHOR
            scr.addstr(0, width-len(msg), msg, curses.A_BOLD)
            yidx = 1
            for line in txt.splitlines():
                
                if yidx >= height:
                    continue
                line = line.strip()[:width]
                if all(map(lambda x:x=='-',line)):
                    continue
                
                if yidx == 1:
                    scr.addstr(yidx,0,line, curses.A_BOLD)
                else:
                    scr.addstr(yidx,0,line)

                yidx += 1
            scr.refresh()
            curses.delay_output(1000)
            if scr.getch() == ord('q'):
                return None
    except KeyboardInterrupt:
        return None
    except Exception as e:
        return  e
if __name__ == "__main__":
    out = curses.wrapper(main)    
    if out is not None:
        print("An error occurred")
        print(out.message)