Exception of imports

main.py

@@ -1,21 +1,20 @@
 
 from time import sleep
-from PIL import Image
-import os
-import serial
 import sys
+import os
 import json
 import datetime
 
 try:
-    import numpy as np
+	import numpy as np
-    from picamera import PiCamera
+	from picamera import PiCamera
-    from picamera.array import PiRGBArray
+	from picamera.array import PiRGBArray
-    import cv2
+	import serial
-    
+	import cv2
+
 except Exception as ex:
-    print('[ Error ] some depandincies are missing\n'+ str(ex.args))
+	print('[ Error ] some depandincies are missing\n'+ str(ex.args))
-    sys.exit()
+	sys.exit()
 
 def init():
 	go = True
@@ -36,17 +35,17 @@ def init():
 	except:
 		print('[ Error ] Can not load cascade File')
 		go = False
-	try: 
+	try:
 		os.mkdir('unknown')
 	except OSError as ex:
 		print('Found (unknown) folder')
-		
+
 	if (go):
 		print('Starting Photo loop..')
 		print('Known people are '+str(loadNames()))
 		start(camera, face_cascade)
-		
+
-	else: 
+	else:
 		print('closing')
 
 def start( camera, face_cascade):
@@ -88,16 +87,16 @@ def start( camera, face_cascade):
 			else:
 				print('Found '+person)
 				OpenShifter()
-		cv2.imshow('image',img) 
+		cv2.imshow('image',img)
 		cv2.waitKey(1)
 		rawCapture.truncate(0)
 		if cv2.waitKey(1) & 0xFF == ord('q'):
 			cv2.destroyAllWindows()
 			break
-	
+
 
 def recognize(image,face_recognizer, names):
-	
+
 	try:
 		img = image.copy()
 		label= face_recognizer.predict(img)
@@ -127,7 +126,7 @@ def OpenShifter():
 			ser.close()
 		except:
 			print('[ Error ] Can not connect to Arduino at /dev/ttyUSB1 ..')
-			
+
 def loadNames():
 	try:
 		with open("faces/names.json", "r") as read_file: