My specialized music player (MPlayer front-end)

specialized-mplayer-audio-player-1.py

#!/usr/bin/env python3
import os,glob,random,subprocess,signal,threading,time,sys,curses
IsProcessRunning=True
Is_cli_win_display_Active=False
Has_cli_win_display_Active=False
play_no=0
args=['<Not playing>','<Not playing>']
os.chdir('/home/np-chaonay/')
songs=[]
def curses_print(msg,scr):
	scr.addstr(msg)
	scr.refresh()
def cli_win_display():
	global Is_cli_win_display_Active,Has_cli_win_display_Active,stdscr
	Is_cli_win_display_Active=True
	while True:
		try:
			stdscr.clear()
			curses_print('MPlayer specialized Front-end',stdscr)
			curses_print('\nThe #'+str(play_no)+' song :',stdscr)
			curses_print('\n\tName : '+args[-1],stdscr)
			curses_print('\n\tDefault Speed and Pitch : '+args[-2],stdscr)
			curses_print('\n\nKey : Ctrl+C:Exit, Ctrl+Z:Pause_And_Move_To_BG, q:Next_Song, Left+Enter,Right+Enter:Move_Cursor (And other key to control MPlayer)',stdscr)	
			break
		except:
			msg='[WARNING] Console resolution is too low. Program\'s keyboard operation is ignored. Please resize the console.'
			stdscr.clear()
			stdscr.refresh()
			print(msg)
			stdscr.refresh()
			while True:
				key=stdscr.getch()
				if key==curses.KEY_RESIZE: break
	stdscr.refresh()
	Is_cli_win_display_Active=False
	Has_cli_win_display_Active=True
def init_cli():
	global stdscr
	stdscr=curses.initscr()
	curses.noecho()
	curses.cbreak()
	stdscr.clear()
	stdscr.refresh()
def end_cli():
	curses.nocbreak()
	curses.echo()
	curses.endwin()
def player_func():
	global play_no,args,MPlayer_process,Is_cli_win_display_Active,cli_win_display_thread
	while IsProcessRunning:
		random.seed()
		play_no+=1
		args=['mplayer','-vo','null','-speed',str(random.randint(500,2000)/1000),random.choice(songs)]
		MPlayer_process=subprocess.Popen(executable='mplayer',args=args,stdout=subprocess.DEVNULL,stderr=subprocess.DEVNULL,stdin=subprocess.PIPE)
		if not Is_cli_win_display_Active:
			cli_win_display_thread=threading.Thread(target=cli_win_display,daemon=True)
			cli_win_display_thread.start()
		MPlayer_process.wait()
player_thread=threading.Thread(target=player_func,daemon=True)
try:
	init_cli()
	player_thread.start()
	# Prevent double getch() called.
	while not Has_cli_win_display_Active:
		try: cli_win_display_thread.wait()
		except (NameError,AttributeError): continue
		else: break
	while True:
		if not Is_cli_win_display_Active:
			key=stdscr.getch()
		else:
			try: cli_win_display_thread.wait()
			except (NameError,AttributeError): pass
			continue
		if key==curses.KEY_RESIZE and not Is_cli_win_display_Active:
			cli_win_display()
		elif not Is_cli_win_display_Active:
			try:
				MPlayer_process.stdin.raw.write(bytes([key]))
				MPlayer_process.stdin.raw.flush()
			except (IOError,NameError,AttributeError): pass
except KeyboardInterrupt:
	IsProcessRunning=False
	try: MPlayer_process.kill()
	except: pass
	end_cli()
	exit()
except Exception:
	IsProcessRunning=False
	try: MPlayer_process.kill()
	except: pass
	end_cli()
	raise