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Objects in Python

MRAB python at mrabarnett.plus.com
Wed Aug 22 11:58:31 EDT 2012 
On 22/08/2012 15:59, lipska the kat wrote:
> On 22/08/12 15:13, shaun wrote:
>
> [snip]
>
>> Im very new to python and the object orientated feature doesnt seem to be as well put together as Java. Can anyone help with this problem?
>
>   From one Java head to another I suggest you park what you know about
> Java and approach Python with a clear mind.
>
> Python is not Java and Java is not Python, that much has become clear.
> Python has actually been around longer than Java and contains many
> features you will be familiar with, serialization and introspection to
> name but two. The whole 'everything is an object' thing is a bit strange
> at first but actually it just means that everything you write is wrapped
> up in a component that exposes various standard methods and attributes,
> you treat functions as Objects and modules as Objects and even your
> classes will automagically sprout new attributes and properties, at
> least that's what I've discovered so far.
>
> There is no real enforced concept of information hiding, no binding of
> type to variable in fact no concept of typing at all as far as I can
> see.

strong typing != static typing

Python is strongly typed, but not statically typed.

 > No interfaces and no subtype polymorphism (Python has 'Duck Type'
> polymorphism and I haven't really explored all the ramifications of this
> yet). It does however have multiple inheritance.
>
[snip]
Python doesn't have interfaces as in Java because it isn't statically
typed.

The idea behind Duck Typing is that the actual type doesn't matter; if
it supports the required method(s) and returns the expected type, then
that's good enough!

http://en.wikipedia.org/wiki/Duck_typing
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