from __future__ import absolute_import, unicode_literals from contextlib import contextmanager from .base import AppData, ContentStore class AppDataDisabled(AppData): """No application cache available (most likely as we don't have write permissions)""" transient = True can_update = False def __init__(self): pass error = RuntimeError("no app data folder available, probably no write access to the folder") def close(self): """do nothing""" def reset(self): """do nothing""" def py_info(self, path): return ContentStoreNA() def embed_update_log(self, distribution, for_py_version): return ContentStoreNA() def extract(self, path, to_folder): raise self.error @contextmanager def locked(self, path): """do nothing""" yield @property def house(self): raise self.error def wheel_image(self, for_py_version, name): raise self.error def py_info_clear(self): """ """ class ContentStoreNA(ContentStore): def exists(self): return False def read(self): """ """ return None def write(self, content): """ """ def remove(self): """ """ @contextmanager def locked(self): yield