需要類似字節的對象，而不是'str' - error

Question

我有python-memcached（1.57）和django-celery（3.1.17），celery（3.1.20）和python 3.5。我總是得到下面當我嘗試錯誤來實現http://docs.celeryproject.org/en/latest/tutorials/task-cookbook.html#ensuring-a-task-is-only-executed-one-at-a-time

Task tasks.live_task[a2ed1faf-0fce-4855-a206-40f2fbdae1a8] raised unexpected: TypeError("a bytes-like object is required, not 'str'",) 
Traceback (most recent call last): 
File "/app/current/venv/lib/python3.5/site-packages/celery/app/trace.py", line 240, in trace_task 
R = retval = fun(*args, **kwargs) 
File "/app/current/venv/lib/python3.5/site-packages/celery/app/trace.py", line 438, in __protected_call__ 
return self.run(*args, **kwargs) 
File "/app/current/src/helps.py", line 62, in wrapper 
if acquire(): 
File "/app/current/src/helps.py", line 57, in acquire 
return cache.add(id, "true", time_out) 
File "/app/current/venv/lib/python3.5/site-packages/django/core/cache/backends/memcached.py", line 80, in add 
return self._cache.add(key, value, self.get_backend_timeout(timeout)) 
File "/app/current/venv/lib/python3.5/site-packages/memcache.py", line 633, in add 
return self._set("add", key, val, time, min_compress_len, noreply) 
File "/app/current/venv/lib/python3.5/site-packages/memcache.py", line 983, in _set 
server, key = self._get_server(key) 
File "/app/dashboard/current/venv/lib/python3.5/site-packages/memcache.py", line 413, in _get_server 
serverhash = serverHashFunction(str(serverhash) + str(i)) 
File "/app/current/venv/lib/python3.5/site-packages/memcache.py", line 65, in cmemcache_hash 
(((binascii.crc32(key) & 0xffffffff) 
TypeError: a bytes-like object is required, not 'str' 

Answer 1

python-memchached如果你已經使用python-memchached，下面的命令將幫助你不支持python 3.5 。

pip uninstall python-memcached 
pip install python3-memcached