> The rule of thumb is, don't introduce a new attribute outside of the __init__ method, otherwise you've given the caller an object that isn't fully initialized.
{: cite="https://jeffknupp.com/blog/2014/06/18/improve-your-python-python-classes-and-object-oriented-programming/"}

<blockquote cite="https://jeffknupp.com/blog/2014/06/18/improve-your-python-python-classes-and-object-oriented-programming/">
  <p>The rule of thumb is, don’t introduce a new attribute outside of the <strong>init</strong> method, otherwise you’ve given the caller an object that isn’t fully initialized.
</blockquote>

> The secret to creativity is knowing how to hide your sources. 
> -- <cite>[Albert Einstein][1]</cite>

[1]:http://www.quotedb.com/quotes/2112

<blockquote>
  <p>The secret to creativity is knowing how to hide your sources. 
  – <cite><a href="http://www.quotedb.com/quotes/2112">Albert Einstein</a></cite>
  </p>
</blockquote>

> Django handles three distinct parts of the work involved in forms.
> <footer class="blockquote-footer">Djangoproject.com tutorial</footer>
{: class="blockquote" cite="https://docs.djangoproject.com/en/1.9/topics/forms/"}

~~~ html
<p> this is my paragraph</p>
~~~

~~~
def myfunction?
  1618
end
~~~
{: .language-ruby}

```ruby
require 'redcarpet'
markdown = Redcarpet.new("Hello World!")
puts markdown.to_html
```

{% highlight ruby %}
def foo
  puts 'foo'
end
{% endhighlight %}

* TOC
{:toc}