Trošku z jiného soudku:
$ python3
Python 3.4.3 (default, Mar 23 2015, 04:19:36)
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>> class Account:
... def deposit(self, amount):
... print('saved:', amount)
...
>>> class SecureAccount(Account):
... def safe_deposit(self, amount):
... print('*secure transaction begin*')
... super().deposit(amount)
... print('*secure transaction end*')
...
>>> sa = SecureAccount()
>>> sa.safe_deposit(100)
*secure transaction begin*
saved: 100
*secure transaction end*
>>>
>>> class Thief(Account):
... def deposit(self, amount):
... print('STOLEN:', amount)
...
>>> class MyAccount(SecureAccount, Thief):
... pass
...
>>> ma = MyAccount()
>>> ma.safe_deposit(200)
*secure transaction begin*
STOLEN: 200
*secure transaction end*
>>>
Honza
2015-05-11 23:57 GMT+02:00 Matěj Cepl <mc...@cepl.eu>:
> On 2015-05-11, 20:53 GMT, Honza Král wrote:
> > Jen pozor, ze tohle je chovani CPythonu, tedy jedne z implementaci a
> > nikoli definice chovani pythonu, nelze tedy na to spolehat a
> > porovnavani integereru by se melo vzdy provadet pres == a nikdy pres
> > is, i kdybychom meli 1000% jistotu, ze to budou jen cisla od 0 do 10.
> > Honza Král
>
> Skutečně, neni Python jako Python:
>
> $ jython
> Jython 2.7b4 (default:3672e624962a, Feb 13 2015, 04:59:14)
> [OpenJDK 64-Bit Server VM (Oracle Corporation)] on java1.7.0_79
> Type "help", "copyright", "credits" or "license" for more information.
> >>> a = 256
> >>> b = 256
> >>> a is b
> True
> >>> a = 257
> >>> b = 257
> >>> a is b
> True
> >>>
> $
>
> Zajímavě,
>
> Matěj
> --
> http://www.ceplovi.cz/matej/, Jabber: mcepl<at>ceplovi.cz
> GPG Finger: 89EF 4BC6 288A BF43 1BAB 25C3 E09F EF25 D964 84AC
>
> The ratio of literacy to illiteracy is a constant, but nowadays
> the illiterates can read.
> -- Alberto Moravia
> _______________________________________________
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>
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