ABC

README.md

@@ -245,12 +245,19 @@ Type
 from types import FunctionType, MethodType, LambdaType, GeneratorType
 ```
 
-### ABC-s
-**Abstract base classes introduce virtual subclasses, that don’t inherit from a class but are still recognized by isinstance() and issubclass().**
+### ABC
+**An abstract base class introduces virtual subclasses, that don’t inherit from it but are still recognized by isinstance() and issubclass().**
 
 ```python
 from numbers import Integral, Rational, Real, Complex, Number
-from collections.abc import Iterable, Collection, Sequence
+from collections.abc import Sequence, Collection, Iterable
+```
+
+```python
+>>> isinstance(123, Number)
+True
+>>> isinstance([1, 2, 3], Iterable)
+True
 ```
 
 

index.html

@@ -316,10 +316,15 @@ Point(x=<span class="hljs-number">1</span>, y=<span class="hljs-number">2</span>
 <h4 id="sometypesdonothavebuiltinnamessotheymustbeimported">Some types do not have builtin names, so they must be imported:</h4>
 <pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> types <span class="hljs-keyword">import</span> FunctionType, MethodType, LambdaType, GeneratorType
 </code></pre>
-<h3 id="abcs">ABC-s</h3>
-<p><strong>Abstract base classes introduce virtual subclasses, that don’t inherit from a class but are still recognized by isinstance() and issubclass().</strong></p>
+<h3 id="abc">ABC</h3>
+<p><strong>An abstract base class introduces virtual subclasses, that don’t inherit from it but are still recognized by isinstance() and issubclass().</strong></p>
 <pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> numbers <span class="hljs-keyword">import</span> Integral, Rational, Real, Complex, Number
-<span class="hljs-keyword">from</span> collections.abc <span class="hljs-keyword">import</span> Iterable, Collection, Sequence
+<span class="hljs-keyword">from</span> collections.abc <span class="hljs-keyword">import</span> Sequence, Collection, Iterable
+</code></pre>
+<pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span>isinstance(<span class="hljs-number">123</span>, Number)
+<span class="hljs-keyword">True</span>
+<span class="hljs-meta">&gt;&gt;&gt; </span>isinstance([<span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>], Iterable)
+<span class="hljs-keyword">True</span>
 </code></pre>
 <h2 id="string"><a href="#string" name="string">#</a>String</h2>
 <pre><code class="python language-python hljs">&lt;str&gt;  = &lt;str&gt;.strip()                       <span class="hljs-comment"># Strips all whitespace characters from both ends.</span>