storage.py 文件源码

def __init__(self, location=None, base_url=None, file_permissions_mode=None,
            directory_permissions_mode=None):
        if location is None:
            location = settings.MEDIA_ROOT
        self.base_location = location
        self.location = abspathu(self.base_location)
        if base_url is None:
            base_url = settings.MEDIA_URL
        elif not base_url.endswith('/'):
            base_url += '/'
        self.base_url = base_url
        self.file_permissions_mode = (
            file_permissions_mode if file_permissions_mode is not None
            else settings.FILE_UPLOAD_PERMISSIONS
        )
        self.directory_permissions_mode = (
            directory_permissions_mode if directory_permissions_mode is not None
            else settings.FILE_UPLOAD_DIRECTORY_PERMISSIONS
        )