Started working on recorder. Using python, Tkinter, and Arecord

Pi-Recorder.py

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+#!/usr/bin/python
+
+from ntpath import altsep
+import os
+import tkinter as tk
+from tkinter import *
+
+def checkUSB():
+	stream = os.popen('lsusb | grep "Audio" | cut -d" " -f7')
+	output = stream.read()
+	if (output.find("PreSonus") != -1):
+		return True
+	else:
+		return False
+
+def checkRecordStatus():
+	stream = os.popen('screen -list | grep -c "Pi-ARecord" || true')
+	output = stream.read()
+	if (output.find("1")):
+		return True
+	else:
+		return False
+
+def record():
+	if checkRecordStatus():
+		os.system('screen -S record -X stuff "^C"')
+		btn_record_var.set('Start Recording')
+	else:
+		if (checkUSB()):
+			os.system('screen -S record -d -m arecord -D plughw:2,0 -f dat -vv /home/pi/test_input.wav')
+			btn_record_var.set('Stop Recording')
+		else:
+			btn_record_var.set('PreSonus N/A')
+
+### tkinter variables
+run_tk = True
+light_mode = True
+
+### tkinter theme
+btn_light_color = '#BA09C6'
+btn_dark_color = '#3C0340'
+bg_light_color = '#F171DA'
+bg_dark_color = '#8a3f7c'
+text_light_color = '#000000'
+text_dark_color = '#adadad'
+
+### tkinter functions
+def onExit():
+	global run_tk
+	if checkRecordStatus():
+		record()
+	run_tk = False
+	main_window.destroy()
+	exit()
+
+def btnRecord():
+	record()
+
+### tkinter main window setup
+main_window = Tk()
+main_window.attributes("-fullscreen", False)
+main_window.protocol("WM_DELETE_WINDOW", onExit)
+main_window.configure(background=bg_light_color)
+main_window.title("Momo\'s Awesome Recorder")
+main_window.columnconfigure(0, weight=1)
+main_window.columnconfigure(1, weight=1)
+main_window.columnconfigure(2, weight=1)
+### tkinter record button
+btn_record_var = tk.StringVar()
+btn_record_var.set('Start Recording')
+btn_record = Button(main_window, textvariable=btn_record_var, bg=btn_light_color, command=btnRecord)
+btn_record.grid(column=0, row=0, sticky='NSEW', padx=5, pady=5)
+
+while run_tk:
+	main_window.update_idletasks()
+	main_window.update()