convert all raw images in current directory recursively to bmp(or png/jpg) image files

raw2bmp.py

# -*- coding: utf-8 -*-
# @author   linjinhui
# @time     2016/04/01
# @version  1.0
# How can I save an image with PIL?
# http://stackoverflow.com/questions/14452824/how-can-i-save-an-image-with-pil
import numpy as np
from PIL import Image
import os
import re
from tqdm import tqdm

raw = 64
col = 64

total_raw_num = 0
total_bmp_num = 0

raw_re = re.compile(r'.raw$')
bmp_re = re.compile(r'.bmp$')


def raw2bmp(fn):
    fn_handler = open(fn,'rb')
    a = np.fromfile(fn_handler,dtype='>u1')
    img = Image.fromarray(a.reshape(col,row))
    img.save(fn[:-4] + '.bmp')

for root, dirs, files in os.walk(os.getcwd(), topdown=True):
    for file in files:
        if raw_re.search(file) != None:
            total_raw_num += 1
        if bmp_re.search(file) != None:
            total_bmp_num += 1

print (" raw_num is %d , bmp_num is %d " \
    %(total_raw_num, total_bmp_num ))

if total_bmp_num == total_raw_num:
    print 'no new raw files need to be transfered'
    exit(0)

print (" to_be_transfered_num =  %d " %(total_raw_num -total_bmp_num))
pbar = tqdm(total = total_raw_num -total_bmp_num)


for root, dirs, files in os.walk(os.getcwd(), topdown=True):
    for file in files:
        if raw_re.search(file) is not None:
            if os.path.isfile(os.path.join(root,file[:-4] + '.bmp')) == False:
                raw2bmp(os.path.join(root,file))
                pbar.update(1)
print '\n 100% completely'