copy_with_progress.py

def copyfileobj(fsrc, fdst, callback, length=16*1024):
    if os.path.exists(fdst):
        if raw_input('File exists, {} \nOvervrite old? [y/n]: '.format(fdst)) == 'y':
            print 'Remove file'
        else:
            print 'Skip copy'
            return
    copied = 0
    prcnt = 0
    size = os.path.getsize(fsrc)
    print 'Copy file [{}]...'.format(sizeof_fmt(size))
    fsrc = open(fsrc, 'rb')
    fdst = open(fdst, 'wb')
    _exit = False
    while True:
        buf = fsrc.read(length)
        if not buf:
            _exit = True
        fdst.write(buf)
        copied += len(buf)
        p = int((float(copied) / size) * 100)
        if p != prcnt:
            callback(p)
        prcnt = p
        if _exit:
            fsrc.close()
            fdst.close()
            break


def clb(x):
    sys.stdout.write('\r{}% [{}{}]{}'.format(x, '#'*x, ' '*(100-x), '\n' if x == 100 else ''))
    sys.stdout.flush()