typo

native-datatypes.html

@@ -38,7 +38,7 @@ body{counter-reset:h1 2}
 
 <h2 id=booleans>Booleans</h2>
 <aside>You can use virtually any expression in a boolean context.</aside>
-<p>Booleans are either true or false. Python has two constants, cleverly <code><dfn>True</dfn></code> and <code><dfn>False</dfn></code>, which can be used to assign <dfn>boolean</dfn> values directly. Expressions can also evaluate to a boolean value. In certain places (like <code>if</code> statements), Python expects an expression to evaluate to a boolean value. These places are called <i>boolean contexts</i>. You can use virtually any expression in a boolean context, and Python will try to determine its truth value. Different datatypes have different rules about which values are true or false in a boolean context. (This will make more sense once you see some concrete examples later in this chapter.)
+<p>Booleans are either true or false. Python has two constants, cleverly named <code><dfn>True</dfn></code> and <code><dfn>False</dfn></code>, which can be used to assign <dfn>boolean</dfn> values directly. Expressions can also evaluate to a boolean value. In certain places (like <code>if</code> statements), Python expects an expression to evaluate to a boolean value. These places are called <i>boolean contexts</i>. You can use virtually any expression in a boolean context, and Python will try to determine its truth value. Different datatypes have different rules about which values are true or false in a boolean context. (This will make more sense once you see some concrete examples later in this chapter.)
 <p>For example, take this snippet from <a href=your-first-python-program.html#divingin><code>humansize.py</code></a>:
 <pre class='nd pp'><code>if size &lt; 0:
     raise ValueError('number must be non-negative')</code></pre>