如何使用pyparsing和SkipTo进行文件解析？

Question

当我与其他解析器一起使用pyparsing SkipTo时，文件解析似乎挂起了

unexpected = pp.SkipTo(pp.LineEnd())('unexpected*')
rules = pp.Group(predefined_parser) | unexpected

parser = pp.Dict(pp.OneOrMore(rules)
parser.ignore('*' + pp.restOfLine)
parser.parseFile(filename, True)

我打开了setDebug，下面是调试消息。任何见解都将受到高度赞赏

Match Dict:([{Group:({Combine:({"something" W:(_) Combine:({W:(ABCD...) [W:(0123...)]}) W:(_) {"sth1" | "sth2"}}) Suppress:("=") W:(0123...)}) | SkipTo:(LineEnd)}]...) at loc 0(1,1)

在我改为以下内容后，AttributeError抛出

unexpected = pp.SkipTo(pp.LineEnd(), include=True)('unexpected*')

这是AttributeError消息

File "/nfs/pdx/disks/icf_gwa_002/ylim13/anaconda2/lib/python2.7/site-packages/pyparsing.py", line 1599, in parseFile
  return self.parseString(file_contents, parseAll)
File "/nfs/pdx/disks/icf_gwa_002/ylim13/anaconda2/lib/python2.7/site-packages/pyparsing.py", line 1078, in _parseNoCache
  tokens = self.postParse( instring, loc, tokens )
File "/nfs/pdx/disks/icf_gwa_002/ylim13/anaconda2/lib/python2.7/site-packages/pyparsing.py", line 3249, in postParse
  dictvalue = tok.copy() #ParseResults(i)
AttributeError: 'str' object has no attribute 'copy'

Answer 1

简短回答-更改：

    | pp.SkipTo(pp.LineEnd(), include=True)

收件人：

    | pp.SkipTo(pp.LineEnd(), include=True).suppress()

当它传递给Dict时，它会看到SkipTo创建的两个值，因此假设它是一个键值对的解析结果，要添加到累积Dict中。通过抑制这个结果，Dict得到一个空字符串，它知道可以忽略它