why do I like python!?

hello.php

#!/usr/bin/env php

<?php
class Hello {
    public function say($what) {
        echo "Hello {$what}!\n";
    }
}

$hello = new Hello();
$hello->say('world');
?>

## $ php -f hello.php
## Hello world!

hello.py

#!/usr/bin/env python

class Hello:
    def say(self, what):
        print 'Hello %s!' % what

hello = Hello()
hello.say('world')

## $ ruby hello.rb
## Hello world!

hello.rb

#!/usr/bin/env ruby

class Hello
  def say(what)
    puts "Hello #{what}!"
  end
end

hello = Hello.new
hello.say 'world'

## $ python hello.py
## Hello world!