python - 除了使用 PyDataLog 的传统方式之外，还有其他在 CherryPy 中使用 PyDataLog 的方式吗？

Question

我在 500 内部服务器错误 页面中收到如下错误。

File "/usr/local/lib/python3.5/dist-packages/pyDatalog/pyParser.py", line 388, in __call__
    literal = Literal.make(self._pyD_name, tuple(args), kwargs)
  File "/usr/local/lib/python3.5/dist-packages/pyDatalog/pyParser.py", line 510, in make
    return precalculations & Query(predicate_name, terms, kwargs, prearity, aggregate)
  File "/usr/local/lib/python3.5/dist-packages/pyDatalog/pyParser.py", line 574, in __init__
    Literal.__init__(self, predicate_name, terms, kwargs, prearity, aggregate)
  File "/usr/local/lib/python3.5/dist-packages/pyDatalog/pyParser.py", line 500, in __init__
    self.lua = pyEngine.Literal(self.predicate_name, tbl, self.prearity, aggregate)
  File "pyDatalog\pyEngine.py", line 402, in pyDatalog.pyEngine.Literal.__init__ (pyDatalog/pyEngine.c:15254)
  File "pyDatalog\pyEngine.py", line 333, in pyDatalog.pyEngine.Pred.__new__ (pyDatalog/pyEngine.c:13917)
  File "pyDatalog\pyEngine.py", line 334, in pyDatalog.pyEngine.Pred.__new__ (pyDatalog/pyEngine.c:13431)
AttributeError: '_thread._local' object has no attribute 'logic'

如何访问 PyDataLog 变量

Answer 1

我找到了答案here在线程安全和多模型部分。如果它可以帮助其他人面对我所面临的问题。

一个Python程序可以启动多个线程。每个线程都应该有这些语句来初始化 pyDatalog :

from pyDatalog import pyDatalog, Logic
Logic() # initializes the pyDatalog engine