conditionals in lambdas?
Michael P. Soulier
msoulier at nortelnetworks.com
Fri Nov 3 15:18:23 EST 2000
In article <KGEM5.4144$jv2.474395 at newsc.telia.net>, Fredrik Lundh wrote:
>
>nope. lambdas can only contain simple expressions.
>
>also see:
>
> http://www.python.org/doc/FAQ.html#6.9
> 6.9. Why can't lambda forms contain statements?
>
> "...the only advantage of using a lambda form instead of
> a locally-defined function is that you don't need to invent
> a name for the function..."
Thanks. I guess I'm still in that Perl mentality where I'm trying to do
many things on one line.
I was looking for a simple way of grabbing all lines that began with a
the string #LOADDATA. In perl I'd do this:
open (FILE, "file") or die "Can't open file: $!";
@contents = grep { /^\#LOADDATA/ } <FILE>;
In python I'm doing it this way...
filecontents = open(filename, "r").readlines()
filecontents = filter(filterloaddata, filecontents)
def filterloaddata(string):
if string[:9] == '#LOADDATA':
return 1
else:
return 0
I guess it'd just be nice to do it without the function. I'm still
learning Python though...
Mike
--
Michael P. Soulier, TD12, SKY Tel: 613-765-4699 (ESN: 39-54699)
Optical Networks, Nortel Networks, SDE Pegasus
"...the word HACK is used as a verb to indicate a massive amount
of nerd-like effort." -Harley Hahn, A Student's Guide to UNIX
Nortel Linux User's Group Ottawa: (internal) http://nlug.ca.nortel.com
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