Comparison of parsers in python?

[andrew cooke]

> I don't quite understand this point.  If I don't use a parser, since
> python can read numbers line by line, why I need a lexer package?

for the lines of numbers it would make no difference; for the track
definition lines it would save you some work.

as you said, this is a simple format, so the case for any tool is
marginal - i'm just exploring the options.

andrew