La cache del becher lamenta TypeError

Question

Cache Beaker si lamenta un TypeError.Ho cercato su Google, persino tracciato il tracker dei problemi del becher, ma non è riuscito a trovare nulla.

I cache le query come il seguente metodo

@staticmethod
def get_queries(query):
    @cache.cache(query, type = 'file', expire = 300)
    def load(query):
        entries = db.get_expensive_query(query)
        return entries
    return load(query)

.

Tuttavia quando eseguo il programma, questo è ciò che ricevo;

  File "/Users/ivan/project/controller/caching.py", line 15, in get_queries
      return load(query)
  File "/Library/Python/2.6/site-packages/Beaker-1.5.4-py2.6.egg/beaker/cache.py", line 417, in cached
    return cache[0].get_value(cache_key, createfunc=go)
  File "/Library/Python/2.6/site-packages/Beaker-1.5.4-py2.6.egg/beaker/cache.py", line 214, in get
    return self._get_value(key, **kw).get_value()
  File "/Library/Python/2.6/site-packages/Beaker-1.5.4-py2.6.egg/beaker/container.py", line 256, in get_value
    if not self._is_expired(stored, expired):
  File "/Library/Python/2.6/site-packages/Beaker-1.5.4-py2.6.egg/beaker/container.py", line 245, in _is_expired
    time.time() >= expiretime + storedtime
TypeError: cannot concatenate 'str' and 'float' objects

.

Sto facendo qualcosa di sbagliato o è questo bug di un becher?

Answer 1

Your code calls cache.cache with an integer for expire, which is correct, but clearly either expiretime or storedtime is winding up with a string. [From the error message it has to be expiretime. --ed] So here's what I think happened:

(1) You called cache.cache with a string expire at some point. [Maybe even from the default cache.expire in the CacheManager opts, not sure.]

(2) You fixed the bug, producing the code you submitted (which works for me).

(3) You reran the code without deleting the cache directory, and so somehow it picked up the previous state.

I can reproduce your error by following the above prescription. Could you delete your cache (everything in cache.data_dir and cache.lock_dir) and try again?