Maximum Number of Class Attributes

Bob Parnes

In its default configuration, my version of pylint (0.5.0) sets the
maximum number of class attributes at 7. This seems low to me, but I
can see how an excessive number might make maintenance more
difficult. Is this indeed the best value for a maximum under ordinary
conditions? If not, can anyone suggest a more reasonable value?

Thanks in advance.

Bob Parnes

--
Bob Parnes
rp*****@megalin k.net

Jul 18 '05 #1

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2258

Sylvain Thenault

On Wed, 26 Jan 2005 02:03:12 +0000, Bob Parnes wrote:

In its default configuration, my version of pylint (0.5.0) sets the
maximum number of class attributes at 7. This seems low to me, but I can
see how an excessive number might make maintenance more difficult. Is this
indeed the best value for a maximum under ordinary conditions? If not, can
anyone suggest a more reasonable value?

well, this value is very subjective, and may change from one context to
another... For instance at some point I hope that pylint will detect "GUI"
classes and allow more attributes (and methods?) to those.
Anyway that's just an indicator, not a rule of thumb (and pylint itself
has some class with more than 7 attributes...).

And FYI, this value has been taken from a post to the
testdrivendevel opment at yahoogroups (as most others default values in the
"design analysis" checker). Hum, well... After checking it seems that the
post said 20 attributes. I don't remember why did i get this number down
to 7. If this discussion leads to an agreement for a better number, I
can change the default value.

--
Sylvain Thénault LOGILAB, Paris (France).

http://www.logilab.com http://www.logilab.fr http://www.logilab.org

Jul 18 '05 #2

Bob Parnes

On Wed, 26 Jan 2005 10:03:47 +0100,
Sylvain Thenault <sy************ **@nospam.logil ab.fr> wrote:

On Wed, 26 Jan 2005 02:03:12 +0000, Bob Parnes wrote:
In its default configuration, my version of pylint (0.5.0) sets the
maximum number of class attributes at 7. This seems low to me, but I can
see how an excessive number might make maintenance more difficult. Is this
indeed the best value for a maximum under ordinary conditions? If not, can
anyone suggest a more reasonable value?

well, this value is very subjective, and may change from one context to
another... For instance at some point I hope that pylint will detect "GUI"
classes and allow more attributes (and methods?) to those.
Anyway that's just an indicator, not a rule of thumb (and pylint itself
has some class with more than 7 attributes...).

And FYI, this value has been taken from a post to the
testdrivendevel opment at yahoogroups (as most others default values in the
"design analysis" checker). Hum, well... After checking it seems that the
post said 20 attributes. I don't remember why did i get this number down
to 7. If this discussion leads to an agreement for a better number, I
can change the default value.

--
Sylvain Thénault LOGILAB, Paris (France).

http://www.logilab.com http://www.logilab.fr http://www.logilab.org

Thanks for the information. I *am* using gui classes.

--
Bob Parnes
rp*****@megalin k.net

Jul 18 '05 #3

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