Comments on: Python decorator mini-study (part 1 of 3)

By: Rizwan Mansuri's Blog

Rizwan Mansuri's Blog — Thu, 30 Jul 2009 19:11:07 +0000

[...] Python Decorator Mini-Study [...]

By: kelly

kelly — Sat, 03 Feb 2007 08:28:59 +0000

HI,

By: Marc

Marc — Mon, 29 Jan 2007 00:42:27 +0000

Like a lot of programming issues, the merit of this particular application of decorators is largely a matter of personal/group opinion. IMHO, it’s interesting but not a good idea, since it obscures what’s going on and saving a few lines is not worth the loss of readibility to other programmers (remember that much of software development involves maintenance of other people’s code). So as cool as it is, I’d probably avoid it. It’s clever, yes, too clever -:)

I think there are some other really interesting applications of decorators, such as decorators for memoization and logging the entry, parameters, and return values of functions (great for debugging!). I’d bet that are interesting decorators for RPCifying functions too.

By: metapundit

metapundit — Mon, 30 Oct 2006 02:43:14 +0000

Re comment #2 – the self.__dict__.update(kw) method is ideal for a constructor with lots of arguments that all are being set to member variables. I still like your decorator approach better for some applications in that you don’t lose the function calling signature (eg, when you accept **kw there’s no way for you (or your IDE) to know just by looking at the function what arguments it takes) and you have the option of ignoring one or two arguments and setting the rest. I still value the conciseness of the decorator, even if it is only saving 3 or 4 lines of code…

By: import this. » Blog Archive » Looking at Python decorators

import this. » Blog Archive » Looking at Python decorators — Sun, 29 Oct 2006 00:35:53 +0000

[...] Muharem Hrnjadovic talks about Python decorators. [...]

By: muharem

muharem — Fri, 20 Oct 2006 19:01:27 +0000

The comment below pretty much destroys my example but the one-liner at the end is so cool that I felt I had to share this with others.

From http://programming.reddit.com/info/mxcv/comments/cn1zo

This is NOT a good use for decorators. Typing few extra lines is not important because you do it only once.

If the argument list is too long, requiring too many assignments lines, use a parameter object instead.

If some automation is needed, I would use this:

def __init__(self, **kw):

self.__dict__.update(kw)

By: Plugging Python decorators « Ozone

Plugging Python decorators « Ozone — Fri, 20 Oct 2006 09:03:36 +0000

[...] For the last few weeks, I have been having very interesting discussions with a work colleague on a wide set of topics ranging from computing to philosophy and family life. He is a smart, passionate and knowledgeable developer and an avid learner. I tried to convince him to start blogging and I am glad to see he has taken the plunge: ladies and gentlemen, give a warm welcome to Muharem Hrnjadovic! His opening salvo is a three part mini-study of Python decorators: check out part one and part two on his blog. Before you ask, part three is in the making and will be available shortly. [...]