Re: Interface & Implementation
- From: Lie Ryan <lie.1296@xxxxxxxxx>
- Date: Fri, 12 Dec 2008 21:48:09 +0000 (UTC)
On Fri, 12 Dec 2008 16:07:26 +0530, J Ramesh Kumar wrote:
Hi,
I am new to python. I require some help on implementing interface and
its implementation. I could not find any sample code in the web. Can you
please send me some sample code which is similar to the below java code
? Thanks in advance for your help.
............
public interface MyIfc
{
public void myMeth1();
public void myMeth2();
}
....
public class MyClass implements MyIfc {
public void myMeth1()
{
//do some implementation
}
public void myMeth2()
{
//do some implementation
}
}
There is no need for interface in python due to duck typing
class MyClass1(object):
def myMeth1(self):
# some implementation
def myMeth2(self):
# some implementation
class MyClass2(object):
def myMeth1(self):
# other implementation
def myMeth2(self):
# other implementation
cs[0] = MyClass1()
cs[1] = MyClass2()
for c in cs:
c.myMeth1()
c.myMeth2()
but if you really want it, simple inheritance might be better anyway,
though not really pythonic:
class MyIfc(object):
def myMeth1(self): return NotImplemented
def myMeth2(self): return NotImplemented
class MyClass(MyIfc):
def myMeth1(self):
# some implementation
def myMeth2(self):
# some implementation
# some might notice the (ab)use of NotImplemented sentinel there
.
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