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From: Florian Weimer <fw@deneb.enyo.de>
Newsgroups: comp.lang.ada
Subject: Re: controlled type in generic package?
Date: 09 Feb 2001 11:39:13 +0100
Organization: Enyo's not your organization
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Date: 2001-02-09T11:39:13+01:00
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Brian Rogoff <bpr@shell5.ba.best.com> writes:

> Yes, C++, Java and Eiffel are fairly "flat" languages, like Python and
> unlike Ada.

Python permits class declarations anywhere a statement is allowed (in
fact, a class declaration *is* a statement).  Python classes are
usually used to implement closures:

def add_something(something):
    class Add_Something_Class:
        def __init__(self, something):
            self.something = something

        def __call__(self, arg):
            return arg + self.something

    return Add_Something_Class(something)

add_1 = add_something(1)

print add_1(2)

In this particular case, you could use a function declaration as well
(which is just another statement ;-), but in more complicated cases,
the class approach is better.

Python is not a flat language at all.