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Groups > comp.lang.python > #79968 > unrolled thread
| Started by | Seymore4Head <Seymore4Head@Hotmail.invalid> |
|---|---|
| First post | 2014-10-30 16:16 -0400 |
| Last post | 2014-10-31 14:56 -0400 |
| Articles | 20 on this page of 68 — 20 participants |
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Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-30 16:16 -0400
Re: Classes sohcahtoa82@gmail.com - 2014-10-30 13:33 -0700
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-30 17:00 -0400
Re: Classes Rob Gaddi <rgaddi@technologyhighland.invalid> - 2014-10-30 13:34 -0700
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-30 17:00 -0400
Re: Classes Larry Hudson <orgnut@yahoo.com> - 2014-10-30 14:28 -0700
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-30 17:34 -0400
Re: Classes sohcahtoa82@gmail.com - 2014-10-30 18:21 -0700
Re: Classes alister <alister.nospam.ware@ntlworld.com> - 2014-10-31 09:59 +0000
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 10:07 -0400
Re: Classes "ast" <nomail@invalid.com> - 2014-10-31 10:05 +0100
Re: Classes "ast" <nomail@invalid.com> - 2014-10-31 10:18 +0100
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-10-31 20:21 +1100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 10:05 -0400
Re: Classes Ian Kelly <ian.g.kelly@gmail.com> - 2014-10-31 08:47 -0600
Re: Classes Grant Edwards <invalid@invalid.invalid> - 2014-10-31 15:49 +0000
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 12:31 -0400
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 03:37 +1100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 12:47 -0400
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 04:02 +1100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 13:31 -0400
Re: Classes Zachary Ware <zachary.ware+pylist@gmail.com> - 2014-10-31 12:39 -0500
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 13:57 -0400
Re: Classes Rob Gaddi <rgaddi@technologyhighland.invalid> - 2014-10-31 10:40 -0700
Re: Classes Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-11-01 11:17 +1300
Re: Classes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-01 12:06 +1100
Re: Classes Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-01 00:12 -0600
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 17:32 +1100
Re: Classes Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-11-03 00:32 +1300
Re: Classes Dave Angel <davea@davea.name> - 2014-10-31 13:20 -0400
Re: Classes Marko Rauhamaa <marko@pacujo.net> - 2014-10-31 19:35 +0200
Re: Classes Grant Edwards <invalid@invalid.invalid> - 2014-10-31 17:40 +0000
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-10-31 18:26 -0400
Re: Classes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-01 12:09 +1100
Re: Classes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-01 04:06 +1100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 13:18 -0400
Re: Classes Rob Gaddi <rgaddi@technologyhighland.invalid> - 2014-10-31 10:43 -0700
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 14:18 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 14:42 -0400
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-10-31 18:57 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 19:22 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 19:32 -0400
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-01 12:00 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-11-01 12:42 -0400
Re: Classes Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-02 09:50 +0000
Re: Classes Tim Delaney <timothy.c.delaney@gmail.com> - 2014-11-02 21:32 +1100
Re: Classes Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-02 12:27 +0000
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-02 11:31 -0500
Re: Classes Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-03 03:12 +0000
Re: Classes Dan Sommers <dan@tombstonezero.net> - 2014-11-03 06:29 +0000
Re: Classes Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-04 01:10 +0000
Re: Classes Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-11-04 18:30 +1300
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-03 08:50 -0500
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-04 02:34 +1100
Re: Classes Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-03 07:47 -0700
Re: Classes Larry Hudson <orgnut@yahoo.com> - 2014-11-02 14:03 -0800
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 07:51 +1100
Re: Classes sohcahtoa82@gmail.com - 2014-10-31 14:24 -0700
Re: Classes Rob Gaddi <rgaddi@technologyhighland.invalid> - 2014-10-31 14:40 -0700
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 08:56 +1100
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 08:36 +1100
Re: Classes Grant Edwards <invalid@invalid.invalid> - 2014-10-31 17:43 +0000
Re: Classes Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-10-31 14:11 +0000
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 12:49 -0400
Re: Classes "ast" <nomail@invalid.com> - 2014-10-31 19:31 +0100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 14:36 -0400
Re: Classes Joel Goldstick <joel.goldstick@gmail.com> - 2014-10-31 14:41 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 14:56 -0400
Page 1 of 4 [1] 2 3 4 Next page →
| From | Seymore4Head <Seymore4Head@Hotmail.invalid> |
|---|---|
| Date | 2014-10-30 16:16 -0400 |
| Subject | Classes |
| Message-ID | <51755at03r0bidjqh3qf0hhpvjr8756ill@4ax.com> |
class pet:
def set_age(self,age):
self.age=age
def get_age(self):
return self.age
pax=pet
pax.set_age(4)
Traceback (most recent call last):
File "C:\Functions\test.py", line 18, in <module>
pax.set_age(4)
TypeError: set_age() missing 1 required positional argument: 'age'
I am trying to pass 4 as the age. Obviously I am doing it wrong.
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| From | sohcahtoa82@gmail.com |
|---|---|
| Date | 2014-10-30 13:33 -0700 |
| Message-ID | <7337e0d9-19cd-4a42-907d-9bc676327ae8@googlegroups.com> |
| In reply to | #79968 |
On Thursday, October 30, 2014 1:19:57 PM UTC-7, Seymore4Head wrote: > class pet: > def set_age(self,age): > self.age=age > def get_age(self): > return self.age > pax=pet > pax.set_age(4) > > Traceback (most recent call last): > File "C:\Functions\test.py", line 18, in <module> > pax.set_age(4) > TypeError: set_age() missing 1 required positional argument: 'age' > > I am trying to pass 4 as the age. Obviously I am doing it wrong. The line `pax=pet` doesn't create an instance of your pet class, it creates essentially a copy of the class definition. You need `pax=pet()` Or preferably, `pax = pet()`. The spaces are optional, but they make it more readable.
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| From | Seymore4Head <Seymore4Head@Hotmail.invalid> |
|---|---|
| Date | 2014-10-30 17:00 -0400 |
| Message-ID | <im955apfpjj92ojfn81tv75c4j6k9id89q@4ax.com> |
| In reply to | #79969 |
On Thu, 30 Oct 2014 13:33:01 -0700 (PDT), sohcahtoa82@gmail.com wrote: >On Thursday, October 30, 2014 1:19:57 PM UTC-7, Seymore4Head wrote: >> class pet: >> def set_age(self,age): >> self.age=age >> def get_age(self): >> return self.age >> pax=pet >> pax.set_age(4) >> >> Traceback (most recent call last): >> File "C:\Functions\test.py", line 18, in <module> >> pax.set_age(4) >> TypeError: set_age() missing 1 required positional argument: 'age' >> >> I am trying to pass 4 as the age. Obviously I am doing it wrong. > >The line `pax=pet` doesn't create an instance of your pet class, it creates essentially a copy of the class definition. > >You need `pax=pet()` > >Or preferably, `pax = pet()`. The spaces are optional, but they make it more readable. Thanks
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| From | Rob Gaddi <rgaddi@technologyhighland.invalid> |
|---|---|
| Date | 2014-10-30 13:34 -0700 |
| Message-ID | <20141030133404.44c0875e@rg.highlandtechnology.com> |
| In reply to | #79968 |
On Thu, 30 Oct 2014 16:16:51 -0400 Seymore4Head <Seymore4Head@Hotmail.invalid> wrote: > class pet: > def set_age(self,age): > self.age=age > def get_age(self): > return self.age > pax=pet > pax.set_age(4) > > Traceback (most recent call last): > File "C:\Functions\test.py", line 18, in <module> > pax.set_age(4) > TypeError: set_age() missing 1 required positional argument: 'age' > > I am trying to pass 4 as the age. Obviously I am doing it wrong. > The reason your call is missing the positional argument is that 4 is being assigned to self, rather than to age, so there is no age. This is because you are trying to call a function of the class object, rather than a function of an instance of the class. pax=pet() -- Rob Gaddi, Highland Technology -- www.highlandtechnology.com Email address domain is currently out of order. See above to fix.
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| From | Seymore4Head <Seymore4Head@Hotmail.invalid> |
|---|---|
| Date | 2014-10-30 17:00 -0400 |
| Message-ID | <pn955apeatfhmkjbjiidotluuaa1qg9i3b@4ax.com> |
| In reply to | #79970 |
On Thu, 30 Oct 2014 13:34:04 -0700, Rob Gaddi <rgaddi@technologyhighland.invalid> wrote: >On Thu, 30 Oct 2014 16:16:51 -0400 >Seymore4Head <Seymore4Head@Hotmail.invalid> wrote: > >> class pet: >> def set_age(self,age): >> self.age=age >> def get_age(self): >> return self.age >> pax=pet >> pax.set_age(4) >> >> Traceback (most recent call last): >> File "C:\Functions\test.py", line 18, in <module> >> pax.set_age(4) >> TypeError: set_age() missing 1 required positional argument: 'age' >> >> I am trying to pass 4 as the age. Obviously I am doing it wrong. >> > >The reason your call is missing the positional argument is that 4 is >being assigned to self, rather than to age, so there is no age. This is >because you are trying to call a function of the class object, rather >than a function of an instance of the class. > >pax=pet() Thanks
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| From | Larry Hudson <orgnut@yahoo.com> |
|---|---|
| Date | 2014-10-30 14:28 -0700 |
| Message-ID | <ctCdnVN2I5HoMM_JnZ2dnUU7-N2dnZ2d@giganews.com> |
| In reply to | #79968 |
On 10/30/2014 01:16 PM, Seymore4Head wrote:
> class pet:
> def set_age(self,age):
> self.age=age
> def get_age(self):
> return self.age
> pax=pet
> pax.set_age(4)
>
> Traceback (most recent call last):
> File "C:\Functions\test.py", line 18, in <module>
> pax.set_age(4)
> TypeError: set_age() missing 1 required positional argument: 'age'
>
> I am trying to pass 4 as the age. Obviously I am doing it wrong.
>
You have already received the answer -- pax=pet should be pax=pet(), but I have a simple
side-comment about style. It is common Python convention to capitalize class names, IOW make
this class Pet instead of class pet. This is convention not a requirement, but it does help
distinguish class names from ordinary variable names -- especially to others reading your code
(as well as yourself a few days later). ;-)
-=- Larry -=-
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| From | Seymore4Head <Seymore4Head@Hotmail.invalid> |
|---|---|
| Date | 2014-10-30 17:34 -0400 |
| Message-ID | <ukb55adn593v64in8c3aleghdfl1av5af1@4ax.com> |
| In reply to | #79973 |
On Thu, 30 Oct 2014 14:28:19 -0700, Larry Hudson <orgnut@yahoo.com> wrote: >On 10/30/2014 01:16 PM, Seymore4Head wrote: >> class pet: >> def set_age(self,age): >> self.age=age >> def get_age(self): >> return self.age >> pax=pet >> pax.set_age(4) >> >> Traceback (most recent call last): >> File "C:\Functions\test.py", line 18, in <module> >> pax.set_age(4) >> TypeError: set_age() missing 1 required positional argument: 'age' >> >> I am trying to pass 4 as the age. Obviously I am doing it wrong. >> >You have already received the answer -- pax=pet should be pax=pet(), but I have a simple >side-comment about style. It is common Python convention to capitalize class names, IOW make >this class Pet instead of class pet. This is convention not a requirement, but it does help >distinguish class names from ordinary variable names -- especially to others reading your code >(as well as yourself a few days later). ;-) > > -=- Larry -=- I try to take typing shortcuts and it bites me in the behind. Good suggestion Thanks
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| From | sohcahtoa82@gmail.com |
|---|---|
| Date | 2014-10-30 18:21 -0700 |
| Message-ID | <9b71b42d-220f-4d08-990f-d3873d87245a@googlegroups.com> |
| In reply to | #79974 |
On Thursday, October 30, 2014 2:37:54 PM UTC-7, Seymore4Head wrote: > On Thu, 30 Oct 2014 14:28:19 -0700, Larry Hudson <orgnut@yahoo.com> > wrote: > > >On 10/30/2014 01:16 PM, Seymore4Head wrote: > >> class pet: > >> def set_age(self,age): > >> self.age=age > >> def get_age(self): > >> return self.age > >> pax=pet > >> pax.set_age(4) > >> > >> Traceback (most recent call last): > >> File "C:\Functions\test.py", line 18, in <module> > >> pax.set_age(4) > >> TypeError: set_age() missing 1 required positional argument: 'age' > >> > >> I am trying to pass 4 as the age. Obviously I am doing it wrong. > >> > >You have already received the answer -- pax=pet should be pax=pet(), but I have a simple > >side-comment about style. It is common Python convention to capitalize class names, IOW make > >this class Pet instead of class pet. This is convention not a requirement, but it does help > >distinguish class names from ordinary variable names -- especially to others reading your code > >(as well as yourself a few days later). ;-) > > > > -=- Larry -=- > > I try to take typing shortcuts and it bites me in the behind. > Good suggestion > Thanks A shortcut is the fastest way to get somewhere you weren't going. Python makes programming very easy (Compared to C/C++ and many other languages), but there are still a lot of shortcuts you can't make.
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| From | alister <alister.nospam.ware@ntlworld.com> |
|---|---|
| Date | 2014-10-31 09:59 +0000 |
| Message-ID | <64J4w.766648$dz3.103993@fx20.am4> |
| In reply to | #79974 |
On Thu, 30 Oct 2014 17:34:57 -0400, Seymore4Head wrote: > On Thu, 30 Oct 2014 14:28:19 -0700, Larry Hudson <orgnut@yahoo.com> > wrote: > >>On 10/30/2014 01:16 PM, Seymore4Head wrote: >>> class pet: >>> def set_age(self,age): >>> self.age=age >>> def get_age(self): >>> return self.age >>> pax=pet pax.set_age(4) >>> >>> Traceback (most recent call last): >>> File "C:\Functions\test.py", line 18, in <module> >>> pax.set_age(4) >>> TypeError: set_age() missing 1 required positional argument: 'age' >>> >>> I am trying to pass 4 as the age. Obviously I am doing it wrong. >>> >>You have already received the answer -- pax=pet should be pax=pet(), but >>I have a simple side-comment about style. It is common Python >>convention to capitalize class names, IOW make this class Pet instead of >>class pet. This is convention not a requirement, but it does help >>distinguish class names from ordinary variable names -- especially to >>others reading your code (as well as yourself a few days later). ;-) >> >> -=- Larry -=- > > I try to take typing shortcuts and it bites me in the behind. > Good suggestion Thanks If shortcuts were safe and easy they would not be shortcuts they would be the way. It is best to avoid shortcuts whilst learning untill you know the full implications. you will find your learning goes much smother & faster. -- We are all in the gutter, but some of us are looking at the stars. -- Oscar Wilde
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| From | Seymore4Head <Seymore4Head@Hotmail.invalid> |
|---|---|
| Date | 2014-10-31 10:07 -0400 |
| Message-ID | <9r575a55lsmns61lnbucauuk6vs1p74l16@4ax.com> |
| In reply to | #80004 |
On Fri, 31 Oct 2014 09:59:30 GMT, alister <alister.nospam.ware@ntlworld.com> wrote: >On Thu, 30 Oct 2014 17:34:57 -0400, Seymore4Head wrote: > >> On Thu, 30 Oct 2014 14:28:19 -0700, Larry Hudson <orgnut@yahoo.com> >> wrote: >> >>>On 10/30/2014 01:16 PM, Seymore4Head wrote: >>>> class pet: >>>> def set_age(self,age): >>>> self.age=age >>>> def get_age(self): >>>> return self.age >>>> pax=pet pax.set_age(4) >>>> >>>> Traceback (most recent call last): >>>> File "C:\Functions\test.py", line 18, in <module> >>>> pax.set_age(4) >>>> TypeError: set_age() missing 1 required positional argument: 'age' >>>> >>>> I am trying to pass 4 as the age. Obviously I am doing it wrong. >>>> >>>You have already received the answer -- pax=pet should be pax=pet(), but >>>I have a simple side-comment about style. It is common Python >>>convention to capitalize class names, IOW make this class Pet instead of >>>class pet. This is convention not a requirement, but it does help >>>distinguish class names from ordinary variable names -- especially to >>>others reading your code (as well as yourself a few days later). ;-) >>> >>> -=- Larry -=- >> >> I try to take typing shortcuts and it bites me in the behind. >> Good suggestion Thanks > >If shortcuts were safe and easy they would not be shortcuts they would be >the way. > >It is best to avoid shortcuts whilst learning untill you know the full >implications. you will find your learning goes much smother & faster. Good advice.
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| From | "ast" <nomail@invalid.com> |
|---|---|
| Date | 2014-10-31 10:05 +0100 |
| Message-ID | <545350c3$0$23449$426a74cc@news.free.fr> |
| In reply to | #79968 |
"Seymore4Head" <Seymore4Head@Hotmail.invalid> a écrit dans le message de news:51755at03r0bidjqh3qf0hhpvjr8756ill@4ax.com... > class pet: > def set_age(self,age): > self.age=age > def get_age(self): > return self.age > pax=pet > pax.set_age(4) > > Traceback (most recent call last): > File "C:\Functions\test.py", line 18, in <module> > pax.set_age(4) > TypeError: set_age() missing 1 required positional argument: 'age' > > I am trying to pass 4 as the age. Obviously I am doing it wrong. > Hi I am a beginner too, but I find it strange that your pet class has no __init__ method to construct instances
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| From | "ast" <nomail@invalid.com> |
|---|---|
| Date | 2014-10-31 10:18 +0100 |
| Message-ID | <545353dd$0$2326$426a74cc@news.free.fr> |
| In reply to | #80001 |
"ast" <nomail@invalid.com> a écrit dans le message de news:545350c3$0$23449$426a74cc@news.free.fr... > I am a beginner too, but I find it strange that your > pet class has no __init__ method to construct > instances It works anyway because __init__ is taken in the parent Class, probably Object. But this means that a method can create a new attribute not previously created with __init__. Is that correct ?
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| From | Chris Angelico <rosuav@gmail.com> |
|---|---|
| Date | 2014-10-31 20:21 +1100 |
| Message-ID | <mailman.15347.1414747313.18130.python-list@python.org> |
| In reply to | #80002 |
On Fri, Oct 31, 2014 at 8:18 PM, ast <nomail@invalid.com> wrote: > > But this means that a method can create a new > attribute not previously created with __init__. > Is that correct ? That's always the case. There's nothing special about __init__ for creating attributes. ChrisA
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| From | Seymore4Head <Seymore4Head@Hotmail.invalid> |
|---|---|
| Date | 2014-10-31 10:05 -0400 |
| Message-ID | <bj575ahusmihp1fpm58gmcr2eg0g8k21o6@4ax.com> |
| In reply to | #80001 |
On Fri, 31 Oct 2014 10:05:03 +0100, "ast" <nomail@invalid.com> wrote: > >"Seymore4Head" <Seymore4Head@Hotmail.invalid> a écrit dans le message de >news:51755at03r0bidjqh3qf0hhpvjr8756ill@4ax.com... >> class pet: >> def set_age(self,age): >> self.age=age >> def get_age(self): >> return self.age >> pax=pet >> pax.set_age(4) >> >> Traceback (most recent call last): >> File "C:\Functions\test.py", line 18, in <module> >> pax.set_age(4) >> TypeError: set_age() missing 1 required positional argument: 'age' >> >> I am trying to pass 4 as the age. Obviously I am doing it wrong. >> > >Hi > >I am a beginner too, but I find it strange that your >pet class has no __init__ method to construct >instances Because the topic of that lesson was getter setter. I can construct an __init___ but I was practicing get/set. This stuff is coming to me slowly. I need to rinse and repeat quite a few more times, before I follow what is going on.
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| From | Ian Kelly <ian.g.kelly@gmail.com> |
|---|---|
| Date | 2014-10-31 08:47 -0600 |
| Message-ID | <mailman.15358.1414766892.18130.python-list@python.org> |
| In reply to | #80015 |
On Fri, Oct 31, 2014 at 8:05 AM, Seymore4Head <Seymore4Head@hotmail.invalid> wrote: > Because the topic of that lesson was getter setter. > I can construct an __init___ but I was practicing get/set. Doesn't sound like a very good lesson to me. Getters and setters are the Java way of doing things. The Pythonic way is to just use an attribute, and then replace it with a property in the unlikely event that getter/setter logic needs to be added.
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| From | Grant Edwards <invalid@invalid.invalid> |
|---|---|
| Date | 2014-10-31 15:49 +0000 |
| Message-ID | <m30b2n$gpu$1@reader2.panix.com> |
| In reply to | #80020 |
On 2014-10-31, Ian Kelly <ian.g.kelly@gmail.com> wrote:
> On Fri, Oct 31, 2014 at 8:05 AM, Seymore4Head
><Seymore4Head@hotmail.invalid> wrote:
>> Because the topic of that lesson was getter setter.
>> I can construct an __init___ but I was practicing get/set.
>
> Doesn't sound like a very good lesson to me.
It's not. It's teaching java or C++ or some other language while
using a Python compiler.
> Getters and setters are the Java way of doing things. The Pythonic
> way is to just use an attribute, and then replace it with a property
> in the unlikely event that getter/setter logic needs to be added.
Exactly.
--
Grant Edwards grant.b.edwards Yow! I have the power to
at HALT PRODUCTION on all
gmail.com TEENAGE SEX COMEDIES!!
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| From | Seymore4Head <Seymore4Head@Hotmail.invalid> |
|---|---|
| Date | 2014-10-31 12:31 -0400 |
| Message-ID | <iae75a5j9ec1qv8as3n5bipl2milv6kolm@4ax.com> |
| In reply to | #80021 |
On Fri, 31 Oct 2014 15:49:43 +0000 (UTC), Grant Edwards <invalid@invalid.invalid> wrote: >On 2014-10-31, Ian Kelly <ian.g.kelly@gmail.com> wrote: >> On Fri, Oct 31, 2014 at 8:05 AM, Seymore4Head >><Seymore4Head@hotmail.invalid> wrote: >>> Because the topic of that lesson was getter setter. >>> I can construct an __init___ but I was practicing get/set. >> >> Doesn't sound like a very good lesson to me. > >It's not. It's teaching java or C++ or some other language while >using a Python compiler. > >> Getters and setters are the Java way of doing things. The Pythonic >> way is to just use an attribute, and then replace it with a property >> in the unlikely event that getter/setter logic needs to be added. > >Exactly. In this class, we will follow the practice of accessing the contents of objects using methods known as getters and setters. While not required by Python, this practice encourages the user of the class to manipulates class objects solely via class methods. The advantage of following this practice is that the implementer of the class definition (often someone other than the user of the class) may restructure the organization of the data fields associated with the object while avoiding the need to rewrite code that uses the class.
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| From | Chris Angelico <rosuav@gmail.com> |
|---|---|
| Date | 2014-11-01 03:37 +1100 |
| Message-ID | <mailman.15359.1414773458.18130.python-list@python.org> |
| In reply to | #80022 |
On Sat, Nov 1, 2014 at 3:31 AM, Seymore4Head <Seymore4Head@hotmail.invalid> wrote: [presumably quoting his course material] > In this class, we will follow the practice of accessing the contents > of objects using methods known as getters and setters. While not > required by Python, this practice encourages the user of the class to > manipulates class objects solely via class methods. The advantage of > following this practice is that the implementer of the class > definition (often someone other than the user of the class) may > restructure the organization of the data fields associated with the > object while avoiding the need to rewrite code that uses the class. Yep, that's teaching C++/Java coding using Python. Isn't it time you got onto a better course? Time and time again you've been going down inadvisable paths, and it seems to me you could do better with the inbuilt tutorial rather than this kind of course. ChrisA
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| From | Seymore4Head <Seymore4Head@Hotmail.invalid> |
|---|---|
| Date | 2014-10-31 12:47 -0400 |
| Message-ID | <q3f75adqkbhvq4nek8h35qq5sti04l0o4t@4ax.com> |
| In reply to | #80023 |
On Sat, 1 Nov 2014 03:37:29 +1100, Chris Angelico <rosuav@gmail.com> wrote: >On Sat, Nov 1, 2014 at 3:31 AM, Seymore4Head ><Seymore4Head@hotmail.invalid> wrote: >[presumably quoting his course material] >> In this class, we will follow the practice of accessing the contents >> of objects using methods known as getters and setters. While not >> required by Python, this practice encourages the user of the class to >> manipulates class objects solely via class methods. The advantage of >> following this practice is that the implementer of the class >> definition (often someone other than the user of the class) may >> restructure the organization of the data fields associated with the >> object while avoiding the need to rewrite code that uses the class. > >Yep, that's teaching C++/Java coding using Python. Isn't it time you >got onto a better course? Time and time again you've been going down >inadvisable paths, and it seems to me you could do better with the >inbuilt tutorial rather than this kind of course. > >ChrisA inbuilt tutorial? The course is free. You can't beat the price. It is only for a few more weeks. Trying to learn from reading the Internet has no set direction. I need a little nudge. More like a shove.
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| From | Chris Angelico <rosuav@gmail.com> |
|---|---|
| Date | 2014-11-01 04:02 +1100 |
| Message-ID | <mailman.15361.1414774962.18130.python-list@python.org> |
| In reply to | #80025 |
On Sat, Nov 1, 2014 at 3:47 AM, Seymore4Head <Seymore4Head@hotmail.invalid> wrote: > inbuilt tutorial? > > The course is free. You can't beat the price. It is only for a few > more weeks. > > Trying to learn from reading the Internet has no set direction. I > need a little nudge. More like a shove. https://docs.python.org/3/tutorial/ Same price. ChrisA
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