python script which displays a command suggestion to move your images in directories based on their EXIF data (date)

Info.py

#!/usr/bin/env python
from PIL import Image
from PIL.ExifTags import TAGS
import sys
import datetime
from sys import exit
                         
def get_exif(fn):
	ret = {}
	i = Image.open(fn)
	info = i._getexif()
	for tag, value in info.items():
		decoded = TAGS.get(tag, tag)
		ret[decoded] = value
	return ret

if len(sys.argv)<2:
	print 'filename is missing';
	print 'Usage:',sys.argv[0],'<filename>','<option>' ;
	print 'd for date, m for month and y for year' ;
	raise SystemExit;
filename = sys.argv[1]
option='d';
if len(sys.argv)<3:
	option='d';
else:
	option=sys.argv[2]
info=get_exif(filename);
try:	
	for attr in info:
		if attr=='DateTimeOriginal':
			d=datetime.datetime.strptime(info[attr], "%Y:%m:%d %H:%M:%S");
			if option=='d':
				print 'cmd',filename, d.strftime("%d:%m:%Y") ;
			elif option=='m':
				print 'cmd',filename, d.strftime("%m:%Y") ;
			elif option=='m':
				print 'cmd',filename, d.strftime("%Y") ;
			else:
				print 'wrong option!';
			break;
except:
	print 'error';