How to get rid the new line

[Matt Gerrans]

> ## remove all the leading and tail white space
> line = string.strip(aline)
> if line:
>     # this is an emptyLine

I like this one best; a regular expression seems like overkill and assuming
that the line is just the one '\n' character (as in other posts) is not good
either.  A line with only whitespace and nothing else probably also should
be considered empty, and the above takes care of that.

However, I think there is a bug in the comment: it should be "this is NOT an
emptyLine."

- mfg