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added whats new in python 3.6

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Julio Biason 8 years ago
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Python 3.6 - Novidades da Versão</title>
<meta name="description" content="A framework for easily creating beautiful presentations using HTML">
<meta name="author" content="Hakim El Hattab">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
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var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
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<![endif]-->
<style type="text/css" media="screen">
.happy {
color: yellow;
}
.semi-opaque {
background-color: rgba(0, 0, 0, 0.7);
}
.reveal section img {
border: none;
}
</style>
</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<section>
<div class="semi-opaque">
<h1>Python 3.6</h1>
<h2>Novidades da versão</h2>
</div>
</section>
</section>
<section>
<section>
<img src="_images/AYV1X0yv.png" alt="Me" style="float:left;width:300px;" class="no-border">
<div>
<ul>
<li>Júlio Biason</li>
<li><img src="_images/logo-horizontal-claro.png" alt="CWI Software" class='no-border'>
<li>@juliobiason</li>
<li>julio.biason@gmail.com</li>
<li><a href="http://presentations.juliobiason.net">http://presentations.juliobiason.net</a></li>
</ul>
</div>
</section>
</section>
<section>
<section>
<h2>Underscores em números</h2>
<pre><code class="python">&gt;&gt;&gt; 1_000_000_000 == 1000000000
True</code></pre>
<pre class="fragment"><code class="python">&gt;&gt;&gt; 1_00_00_00_00_0</code></pre>
<pre class="fragment"><code class="python">&gt;&gt;&gt; '{:_}'.format(1000000)
'1_000_000'</code></pre>
</section>
</section>
<section>
<section>
<h2>String literals</h2>
<pre><code class="python">&gt;&gt;&gt; name = 'Julio'
&gt;&gt;&gt; f'My name is {name}'
My name is Julio</code></pre>
<pre class="fragment"><code class="python">&gt;&gt;&gt; def f():
... name = 'Julio'
... print('My name is {name}'.format(**locals()))</code></pre>
</section>
<section>
<pre><code class="python">
all(list(print(f'{i} bottle{"s" if i != 1 else ""} of '
f'beer on the wall, {str(i).lower()} '
f'bottle{"s" if i != 1 else ""} of beer.\n{"Take one '
f'down pass it around" if str(i).lower() == str(i) '
f'else "Go to the store and buy some more"}, '
f'{i-1 if i not in [1, "No more"] else "no more" '
f'if i == 1 else 99} bottles of beer on the wall.\n') \
for i in list(range(99, 0, -1))+['No more'])) \
or ""
</code></pre>
</section>
</section>
<section>
<section>
<h2>Type annotations</h2>
<p>Só pra lembrar...</p>
<pre><code class="python">&gt;&gt;&gt; def(name: str) -&gt; str:
... return 'Hello ' + name</code></pre>
<p class="fragment">
Não signfica que o CPython valida o parâmetro ou o retorno.
</p>
</section>
<section>
<pre><code class="python">&gt;&gt;&gt; captain: str # None</code></pre>
<pre><code class="python">&gt;&gt;&gt; values: List[int] = [1, 2, 4]</code></pre>
<p class="fragment">Essas informações podem ser extraídas de <code>__annotations__</code>
(assim como docstrings podem ser extraídas de <code>__doc__</code>).</p>
</section>
</section>
<section>
<section>
<h2>secrets</h2>
<p>Nova biblioteca para geração de números randômicos "fortes", utilizados
para criptografia.</p>
<pre><code class="python">&gt;&gt;&gt; token_hex(16)
'f9bf78b9a18ce6d46a0cd2b0b86df9da'</code></pre>
</section>
</section>
<section>
<section>
<h2>Pathlib</h2>
<p>Representação de um caminho qualquer no sistema de arquivos.</p>
<pre><code class="python"&gt;&gt;&gt;> import pathlib
&gt;&gt;&gt; with open(pathlib.Path("README")) as f:
... contents = f.read()
...
&gt;&gt;&gt; import os.path
&gt;&gt;&gt; os.path.splitext(pat)
('some_file', '.txt')</code></pre>
</section>
<section>
<p>Nova função para tornar objetos Path-like: <code>__fspath()__</code></p>
</section>
</section>
<section>
<section>
<h2>Novos "dicionários"</h2>
<p><code>dict</code> agora é mais compacto.</p>
<p class="fragment">Efeito colateral: agora são ordenados em CPython,
mas não no spec da linguagem Python.</p>
</section>
<section>
<ul>
<li><code>**kwargs</code> agora são ordenados.</li>
<li><code>__dict__</code> agora é ordenado.</li>
</ul>
</section>
</section>
<section>
<section>
<h2>Async the world!</h2>
</section>
</section>
</div>
</div>
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