Amazing! There were lots of great suggestions to my original post, but
I this is my favorite.
Rick
Fredrik Lundh wrote:
> RickMuller wrote:
>> > I'm posting this here because (1) I'm feeling smug at what a bright
> > little coder I am
>> if you want to show off, and use a more pythonic interface, you can do
> it with a lot fewer lines. here's one example:
>> def parseline(line, *types):
> result = [c(x) for (x, c) in zip(line.split(), types) if c] or [None]
> return len(result) != 1 and result or result[0]
>> text = "H 0.000 0.000 0.000"
>> print parseline(text, str, float, float, float)
> print parseline(text, None, float, float, float)
> print parseline(text, None, float)
>> etc. and since you know how many items you'll get back from the
> function, you might as well go for the one-liner version, and do
> the unpacking on the way out:
>> def parseline(line, *types):
> return [c(x) for (x, c) in zip(line.split(), types) if c] or [None]
>> text = "H 0.000 0.000 0.000"
>> [tag, value] = parseline(text, str, float)
> [value] = parseline(text, None, float)
>> </F>
