哪个异常类用于文件解析错误？

Question

I'm writing a parser for a certain file format. If a file is not correctly formatted (and can not be parsed) then the parser throws an exception.

What exception class, in the Python 2 exception hierarchy, should I use?

Answer 1

How about

class XyzParseError(Exception):
    pass

where XyzParser is the name of your parser class? That's also what HTMLParser in the standard library does.

Answer 2

ValueError似乎是适当的。