Reduces size of all files in the working directory

reduce_image_size.py

from __future__ import print_function
import os, sys
import shutil
from PIL import Image

file_list = os.listdir("./")
target_size = 4000*1024
start_quality = 95
current_quality = 95


try:
	os.mkdir('./small')
except OSError:
	pass

for infile in file_list:
	print("processing    "+infile+'   ('+str(os.path.getsize(infile))+')')
	if (os.path.getsize(infile) < target_size):
		try:
			shutil.copy('./'+infile,'./small/'+infile)
		except IsADirectoryError:
			pass
	else:
		outfile = './small/'+infile
		if infile != outfile:
			try:
				original_image = Image.open(infile)
				new_size = original_image.size
				original_image.save(outfile,"JPEG",quality=int(current_quality))
				while (os.path.getsize(outfile) > target_size):
					print("+--processing "+infile+'   ('+str(os.path.getsize(outfile))+')')
					current_quality = current_quality * 0.98
					new_size = (new_size[0] * 0.98,new_size[1] * 0.98)
					new_size_int = (int(new_size[0]),int(new_size[1]))
					new_image = original_image.resize(new_size_int)
					new_image.save(outfile,"JPEG",quality=int(current_quality))
				current_quality = 95
			except IOError:
				print("cannot convert", infile)
	print("+-----reduced "+infile+' to '+str(os.path.getsize(outfile)))