__init__.py 文件源码

def autodetect():
  """Detects an appropriate cache module and returns it.

  Returns:
    googleapiclient.discovery_cache.base.Cache, a cache object which
    is auto detected, or None if no cache object is available.
  """
  try:
    from google.appengine.api import memcache
    from . import appengine_memcache
    return appengine_memcache.cache
  except Exception:
    try:
      from . import file_cache
      return file_cache.cache
    except Exception as e:
      logging.warning(e, exc_info=True)
      return None