我正在尝试使用 pyparsing 获取两条已知行之间的行 block 。例如:
ABC
....
DEF
我的Python代码:
end = Literal("\n").suppress()
firstLine = Literal("ABC") + SkipTo(end)
secondLine = Literal("DEF") + SkipTo(end)
line = SkipTo(end)
test = firstLine + OneOrMore(line) + secondLine
test.searchString(myText)
--> 但它不起作用。 Python 只是挂起。 有人可以告诉我该怎么做吗?
谢谢
最佳答案
将此调试代码添加到您的程序中:
firstLine.setName("firstLine").setDebug()
line.setName("line").setDebug()
secondLine.setName("secondLine").setDebug()
并将 searchString 更改为 parseString。每次尝试匹配表达式时,setDebug() 都会打印出来,如果匹配,则打印出匹配的内容,如果不匹配,则打印出异常。通过您的程序,进行这些更改后我得到:
Match firstLine at loc 0(1,1)
Matched firstLine -> ['ABC', '.... ']
Match line at loc 11(3,1)
Matched line -> ['DEF ']
Match line at loc 15(3,1)
Exception raised:Expected line (at char 17), (line:4, col:2)
Match secondLine at loc 15(3,1)
Exception raised:Expected "DEF" (at char 16), (line:4, col:1)
Traceback (most recent call last):
File "rrrr.py", line 19, in <module>
test.parseString(myText)
File "C:\Python25\lib\site-packages\pyparsing-1.5.5-py...
raise exc
pyparsing.ParseException: Expected "DEF" (at char 16), (line:4, col:1)
可能不是你所期望的。
关于python解析2个已知行之间的文本 block ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4040762/