Property

gto76 · gto76 · commit 6b840060f34b · 2019-04-22T20:24:34.000+02:00
diff --git a/README.md b/README.md
@@ -871,6 +871,25 @@ class C(A, B): pass
 [<class 'C'>, <class 'A'>, <class 'B'>, <class 'object'>]
 ```
 
+### Property
+```python
+class MyClass:
+    @property
+    def a(self):
+        return self._a
+
+    @a.setter
+    def a(self, value):
+        self._a = value
+```
+
+```python
+>>> el = MyClass()
+>>> el.a = 123
+>>> el.a
+123
+```
+
 ### Dataclass
 **Decorator that automatically generates init(), repr() and eq() special methods.**
 ```python
@@ -886,6 +905,7 @@ class <class_name>:
 * **Function field() is needed because `'<attr_name>: list = []'` would make a list that is shared among all instances.**
 * **Default_factory can be any callable.**
 
+
 ### Copy
 ```python
 from copy import copy, deepcopy
@@ -921,10 +941,10 @@ class MyComparable:
 ```python
 class MyHashable:
     def __init__(self, a):
-        self.__a = copy.deepcopy(a)
+        self._a = copy.deepcopy(a)
     @property
     def a(self):
-        return self.__a
+        return self._a
     def __eq__(self, other):
         if isinstance(other, type(self)):
             return self.a == other.a
diff --git a/index.html b/index.html
@@ -823,6 +823,21 @@ <h3 id="multipleinheritance">Multiple Inheritance</h3>
 <pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span>C.mro()
 [&lt;<span class="hljs-class"><span class="hljs-title">class</span> '<span class="hljs-title">C</span>'&gt;, &lt;<span class="hljs-title">class</span> '<span class="hljs-title">A</span>'&gt;, &lt;<span class="hljs-title">class</span> '<span class="hljs-title">B</span>'&gt;, &lt;<span class="hljs-title">class</span> '<span class="hljs-title">object</span>'&gt;]
 </span></code></pre>
+<h3 id="property">Property</h3>
+<pre><code class="python language-python hljs"><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">MyClass</span>:</span>
+<span class="hljs-meta">    @property</span>
+    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">a</span><span class="hljs-params">(self)</span>:</span>
+        <span class="hljs-keyword">return</span> self._a
+
+<span class="hljs-meta">    @a.setter</span>
+    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">a</span><span class="hljs-params">(self, value)</span>:</span>
+        self._a = value
+</code></pre>
+<pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span>el = MyClass()
+<span class="hljs-meta">&gt;&gt;&gt; </span>el.a = <span class="hljs-number">123</span>
+<span class="hljs-meta">&gt;&gt;&gt; </span>el.a
+<span class="hljs-number">123</span>
+</code></pre>
 <h3 id="dataclass">Dataclass</h3>
 <p><strong>Decorator that automatically generates init(), repr() and eq() special methods.</strong></p>
 <pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> dataclasses <span class="hljs-keyword">import</span> dataclass, field
@@ -867,10 +882,10 @@ <h3 id="hashable">Hashable</h3>
 </ul>
 <pre><code class="python language-python hljs"><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">MyHashable</span>:</span>
     <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">__init__</span><span class="hljs-params">(self, a)</span>:</span>
-        self.__a = copy.deepcopy(a)
+        self._a = copy.deepcopy(a)
 <span class="hljs-meta">    @property</span>
     <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">a</span><span class="hljs-params">(self)</span>:</span>
-        <span class="hljs-keyword">return</span> self.__a
+        <span class="hljs-keyword">return</span> self._a
     <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">__eq__</span><span class="hljs-params">(self, other)</span>:</span>
         <span class="hljs-keyword">if</span> isinstance(other, type(self)):
             <span class="hljs-keyword">return</span> self.a == other.a
