Share Code Tips
Steven D'Aprano
steve+comp.lang.python at pearwood.info
Fri Jul 19 13:59:10 EDT 2013
On Fri, 19 Jul 2013 09:51:23 -0400, Devyn Collier Johnson wrote:
> def KDE_VERSION():
> print(subprocess.getoutput('kded4 --version | awk -F:
> \'NR == 2 {print $2}\'').strip()) ##Get KDE version##
I run KDE 3, and the above does not work for me.
*half a wink*
By the way, a comment that doesn't tell you anything that you don't
already know is worse than useless. The function is called "KDE_VERSION,
what else would it do other than return the KDE version?
x += 1 # add 1 to x
Worse than just being useless, redundant comments are dangerous, because
as a general rule comments that don't say anything useful eventually
become out-of-date, they become *inaccurate* rather than *redundant*, and
that's worse than being useless.
> Need a case-insensitive if-statement? Check this out:
>
> if 'YOUR_STRING'.lower() in SOMEVAR.lower():
Case-insensitivity is very hard. Take German for example:
STRASSE <-> straße
Or Turkish:
İ <-> i
I <-> ı
In Python 3.3, you should use casefold rather than lowercase or uppercase:
if some_string.casefold() in another_string.casefold(): ...
but even that can't always take into account localised rules, e.g. in
German, you should not convert SS to ß for placenames or person names, so
for example Herr Meißner and Herr Meissner are two different people. This
is one of the motivating reasons for introducing the uppercase ß.
http://opentype.info/blog/2011/01/24/capital-sharp-s/
--
Steven
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