Context managers

README.md

@@ -1204,6 +1204,19 @@ class MyOpen():
 Hello World!
 ```
 
+#### List of context managers:
+```python
+with open('<path>', ...) as file: ...
+with wave.open('<path>', ...) as wave_file: ...
+with memoryview(<bytes/bytearray/array>) as view: ...
+```
+
+#### List of reusable context managers:
+```python
+lock = threading.RLock(); with lock: ...
+con  = sqlite3.connect('<path>'); with con: con.execute('<insert_query>')
+```
+
 
 Enum
 ----

index.html

@@ -1122,6 +1122,15 @@ Z = dataclasses.make_dataclass(<span class="hljs-string">'Z'</span>, [<span clas
 <span class="hljs-meta">... </span>    print(file.read())
 Hello World!
 </code></pre>
+<h4 id="listofcontextmanagers">List of context managers:</h4>
+<pre><code class="python language-python hljs"><span class="hljs-keyword">with</span> open(<span class="hljs-string">'&lt;path&gt;'</span>, ...) <span class="hljs-keyword">as</span> file: ...
+<span class="hljs-keyword">with</span> wave.open(<span class="hljs-string">'&lt;path&gt;'</span>, ...) <span class="hljs-keyword">as</span> wave_file: ...
+<span class="hljs-keyword">with</span> memoryview(&lt;bytes/bytearray/array&gt;) <span class="hljs-keyword">as</span> view: ...
+</code></pre>
+<h4 id="listofreusablecontextmanagers">List of reusable context managers:</h4>
+<pre><code class="python language-python hljs">lock = threading.RLock(); <span class="hljs-keyword">with</span> lock: ...
+con  = sqlite3.connect(<span class="hljs-string">'&lt;path&gt;'</span>); <span class="hljs-keyword">with</span> con: con.execute(<span class="hljs-string">'&lt;insert_query&gt;'</span>)
+</code></pre>
 <h2 id="enum"><a href="#enum" name="enum">#</a>Enum</h2>
 <pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> enum <span class="hljs-keyword">import</span> Enum, auto