与传统的使用PyDataLog的方式相比，在CherryPy中是否还有使用PyDataLog的其他方式？

Question

在下面的500 internal server error页面中，我遇到了这样的错误。

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

我在这里一节中找到了答案Thread safety and multi-models。如果它能帮助其他人面对我所面对的一切。

Python程序可能启动几个线程。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