utils.py 文件源码

def get_file_stat(path):
    """
    This is a helper function that given a local path return the size of
    the file in bytes and time of last modification.
    """
    try:
        stats = os.stat(path)
    except IOError as e:
        raise ValueError('Could not retrieve file stat of "%s": %s' % (
            path, e))

    try:
        update_time = datetime.fromtimestamp(stats.st_mtime, tzlocal())
    except (ValueError, OSError, OverflowError):
        # Python's fromtimestamp raises value errors when the timestamp is out
        # of range of the platform's C localtime() function. This can cause
        # issues when syncing from systems with a wide range of valid
        # timestamps to systems with a lower range. Some systems support
        # 64-bit timestamps, for instance, while others only support 32-bit.
        # We don't want to fail in these cases, so instead we pass along none.
        update_time = None

    return stats.st_size, update_time