CourseInfo.py 文件源码

def rmtree_remove_readonly_files(func, path, exc_info):
    """
    Error handler for ``shutil.rmtree``.

    If the error is due to an access error (read only file)
    it attempts to add write permission and then retries.

    If the error is for another reason it re-raises the error.

    Usage : ``shutil.rmtree(path, onerror=rmtree_remove_readonly_files)``

    This code was copied from
    http://stackoverflow.com/questions/2656322/shutil-rmtree-fails-on-windows-with-access-is-denied
    """
    import stat
    if not os.access(path, os.W_OK):
        # Is the error an access error ?
        os.chmod(path, stat.S_IWUSR)
        func(path)
    else:
        raise