python - Multiprocessing.pool 错误 : raise self. _value sre_constants.error: 不平衡的括号

Question

这个错误的原因可能是什么？

File "/pga/mcad/install/python/python-2.7.6.9/linux/RH6/lib/python2.7/multiprocessing/pool.py", line 250, in map
    return self.map_async(func, iterable, chunksize).get()
  File "/pga/mcad/install/python/python-2.7.6.9/linux/RH6/lib/python2.7/multiprocessing/pool.py", line 554, in get
    raise self._value
sre_constants.error: unbalanced parenthesis

Answer 1

我认为您的正则表达式中可能有一个括号，前面没有转义字符 \。

You need to escape the parenthesis using '\' since they are a reserved character in regular expressions, used for retrieving the values inside the parenthesis.