Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!goblin1!goblin.stu.neva.ru!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'api.': 0.04; 'mrab': 0.05; '__name__': 0.07; 'attributes': 0.07; 'python': 0.09; 'meaningful': 0.09; 'cc:addr:python-list': 0.10; 'def': 0.10; 'skip:# 20': 0.13; ':-)': 0.13; 'skip:p 40': 0.15; '"system': 0.16; "'__main__':": 0.16; 'literals': 0.16; 'simple.': 0.16; '\xa0def': 0.16; 'wed,': 0.16; 'wrote:': 0.17; 'instance': 0.17; 'jan': 0.18; '>>>': 0.18; 'email addr:gmail.com>': 0.20; 'work,': 0.22; 'cc:2**0': 0.23; 'this:': 0.23; 'idea': 0.24; 'id:': 0.24; 'pass': 0.25; 'cc:addr:python.org': 0.25; 'header:In- Reply-To:1': 0.25; 'wrote': 0.26; 'extend': 0.26; 'i.e.': 0.27; 'message-id:@mail.gmail.com': 0.27; 'interface': 0.27; 'this?': 0.28; '>>>>': 0.29; 'methods.': 0.29; 'url:mailman': 0.29; '8bit%:5': 0.29; 'skip:_ 10': 0.29; 'skip:& 10': 0.29; 'class': 0.29; "i'm": 0.29; 'code': 0.31; 'url:python': 0.32; 'url:listinfo': 0.32; 'skip:s 30': 0.33; 'anyone': 0.33; 'skip:& 20': 0.33; 'received:google.com': 0.34; 'done': 0.34; 'thanks': 0.34; 'pm,': 0.35; 'received:209.85': 0.35; 'something': 0.35; 'but': 0.36; 'url:org': 0.36; 'method': 0.36; 'test': 0.36; 'does': 0.37; 'received:209': 0.37; 'subject:: ': 0.38; 'some': 0.38; 'sure': 0.38; 'skip:" 10': 0.40; 'header:Received:5': 0.40; 'url:mail': 0.40; 'brown': 0.65; 'satellite': 0.65; '2013': 0.84; 'received:209.85.160.51': 0.84; 'received:mail- pb0-f51.google.com': 0.84; 'sufficient?': 0.84; 'subject:Class': 0.91; 'responses': 0.93 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=IP0HemO0np3jvbOO+jrtXFOlKsj1oc2W4zxa9u1Ub9g=; b=NpsHBDeBj7AHItiAG/sDJ8FZWi7fnEzx6xKAfSvfk0KrAjBZnlX1+FNX26iVpNc8TZ 4JD7KGbTX7dzbCgOp1Id7EoHudd/f4yJsWs5HAGRBn/5uB0a09x5nmUPXS+DD0s2sqGj c2ooXPjx62pGsRJOqI28Suv0wqx3QgBIdE+Y7x2BDVbbSGj0cvfgLGlZnmNmPfnFvvtE +lujC6Dk03IFIZ4Z/3qEX2OdR6MfHvfW45/EaPAj6YjaTdMuGvu0CwiUOFvStqqObTJM bFTnsS3FZg6Ct/Z+ZNogVqhUtTVIg1rU5w8tP3POgH/O2GGv5X3By+DsvsErTqHtgrtI Kh7Q== MIME-Version: 1.0 In-Reply-To: References: <50EDE103.6080609@mrabarnett.plus.com> From: Rodrick Brown Date: Wed, 9 Jan 2013 19:43:01 -0500 Subject: Re: Class confusion To: Matt Jones Content-Type: multipart/alternative; boundary=047d7b15a58bcf969904d2e477ac Cc: "python-list@python.org" X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 267 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1357778962 news.xs4all.nl 6961 [2001:888:2000:d::a6]:48187 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:36538 --047d7b15a58bcf969904d2e477ac Content-Type: text/plain; charset=ISO-8859-1 Can anyone care to advise on the following? Based on the responses does this look sufficient? #!/opt/local/bin/python class SystemList(object): sysmap = { '1039' : 'nebula', '1040' : 'mercury'} def __init__(self, sysid): self.sysid = sysid def get_sysname(self): return self.sysmap[self.sysid] class System(object): def __init__(self): pass def get_hostname(self,sysid): return SystemList(sysid) if __name__ == '__main__': sc = System() for sysid in ('1039','1040'): print(sc.get_hostname(sysid).get_sysname()) On Wed, Jan 9, 2013 at 5:18 PM, Rodrick Brown wrote: > On Wed, Jan 9, 2013 at 4:34 PM, Matt Jones wrote: > >> # Something like... >> >> class SystemList(object): >> def get_systemid(self): >> return "System Id: bleh" >> >> def get_running_kernel(self): >> return "Kernel: bleh" >> >> >> class SatelliteConnect(object): >> def get_systemlist(self): >> return SystemList() >> >> >> # Now the code you wrote would work, only return those literals thought, >> you'd want to do something meaningful inside of SystemList's methods. >> >> > Thanks for the tip Matt, I had no idea it was so simple. :-) > > >> *Matt Jones* >> >> >> On Wed, Jan 9, 2013 at 3:28 PM, MRAB wrote: >> >>> On 2013-01-09 20:13, Rodrick Brown wrote: >>> >>>> How can I make a class that has methods with attributes and other >>>> functions? >>>> I see a lot of code >>>> >>>> >>>> I'm reading the documentation to Redhat's Satellite software which has a >>>> XMLRPC interface and wrote the following code to test the api. >>>> >>>> I would like to extend this code to support methods with methods? I see >>>> this done a lot in python code but I'm not sure how to accomplish >>>> something like this? >>>> >>>> i.e. >>>> >>>> sc = SatelliteConnect() >>>> sc.get_systemlist().get_**systemid() ? >>>> or >>>> sc.get_systemlist().get_**running_kernel() >>>> >>>> How does one chain methods and attributes like this with classes? >>>> >>>> [snip] >>> This: >>> >>> sc.get_systemlist().get_**systemid() >>> >>> simply means that the method "get_systemlist" returns an instance of >>> some class (let's call it "SystemList") which has a method >>> "get_systemid". >>> >>> -- >>> http://mail.python.org/**mailman/listinfo/python-list >>> >> >> >> -- >> http://mail.python.org/mailman/listinfo/python-list >> >> > --047d7b15a58bcf969904d2e477ac Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Can anyone care to advise on the following? Based on the r= esponses does this look sufficient?

#!/opt/local/bi= n/python

class SystemList(object):
=A0 = =A0 sysmap =3D { '1039' : 'nebula',
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0'1040' : 'mercury'}

=A0 =A0 def __init__(self, sysid):
=A0 =A0 = =A0 =A0 self.sysid =3D sysid

=A0 =A0 def get_sysna= me(self):
=A0 =A0 =A0 =A0 return self.sysmap[self.sysid]

class System(object):
=A0 =A0 def __init__(se= lf):
=A0 =A0 =A0 =A0 pass

=A0 =A0 def ge= t_hostname(self,sysid):
=A0 =A0 =A0 =A0 return =A0SystemList(sysi= d)

if __name__ =3D=3D '__main__':
=A0 =A0 sc =3D System= ()

=A0 =A0 for sysid in ('1039','1040&= #39;):
=A0 =A0 =A0 =A0 print(sc.get_hostname(sysid).get_sysname()= )



O= n Wed, Jan 9, 2013 at 5:18 PM, Rodrick Brown <rodrick.brown@gmail.c= om> wrote:
On Wed, J= an 9, 2013 at 4:34 PM, Matt Jones <matt.walker.jones@gmail.com> wrote:
# Something like...

class SystemList(object):
=A0 =A0de= f get_systemid(self):
=A0 =A0 =A0 return "System Id: bleh&qu= ot;

=A0 =A0def get_running_kernel(self):
=A0 =A0 =A0 re= turn "Kernel: bleh"


class SatelliteConnect(object):
=A0 =A0def get_systeml= ist(self):
=A0 =A0 = =A0 return SystemList()


# Now the code you wrote would work, only return those literals = thought, you'd want to do something meaningful inside of SystemList'= ;s methods.


<= div>Thanks for the tip Matt, I had no idea it was so simple. :-)=A0
=A0
Matt Jones


On Wed, Jan 9, 2013 at 3:28 PM, MRAB <python@mrabarnett.plus.com> wrote:
On 2013-01-09 20:13, Rodrick Brown wrote:
How can I make a class that has methods with attributes and other
functions?
I see a lot of code


I'm reading the documentation to Redhat's Satellite software which = has a
XMLRPC interface and wrote the following code to test the api.

I would like to extend this code to support methods with methods? I see
this done a lot in python code but I'm not sure how to accomplish
something like this?

i.e.

sc =3D SatelliteConnect()
sc.get_systemlist().get_systemid() ?
or
sc.get_systemlist().get_running_kernel()

How does one chain methods and attributes like this with classes?

[snip]
This:

=A0 =A0 sc.get_systemlist().get_systemid()

simply means that the method "get_systemlist" returns an instance= of
some class (let's call it "SystemList") which has a method "get_systemid".

--
http://mail.python.org/mailman/listinfo/python-list


--
http://mail.python.org/mailman/listinfo/python-list



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