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229 lines
8.6 KiB
229 lines
8.6 KiB
8 years ago
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>Python 3.6 - Novidades da Versão</title>
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<meta name="description" content="A framework for easily creating beautiful presentations using HTML">
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<meta name="author" content="Hakim El Hattab">
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var link = document.createElement( 'link' );
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<style type="text/css" media="screen">
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.happy {
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color: yellow;
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background-color: rgba(0, 0, 0, 0.7);
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}
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.reveal section img {
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border: none;
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}
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</style>
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</head>
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<body>
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<div class="reveal">
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<div class="slides">
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<section>
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<section>
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<div class="semi-opaque">
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<h1>Python 3.6</h1>
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<h2>Novidades da versão</h2>
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</div>
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</section>
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</section>
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<section>
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<section>
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<img src="_images/AYV1X0yv.png" alt="Me" style="float:left;width:300px;" class="no-border">
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<div>
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<ul>
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<li>Júlio Biason</li>
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<li><img src="_images/logo-horizontal-claro.png" alt="CWI Software" class='no-border'>
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<li>@juliobiason</li>
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<li>julio.biason@gmail.com</li>
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<li><a href="http://presentations.juliobiason.net">http://presentations.juliobiason.net</a></li>
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</ul>
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</div>
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</section>
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</section>
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<section>
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<section>
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<h2>Underscores em números</h2>
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<pre><code class="python">>>> 1_000_000_000 == 1000000000
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True</code></pre>
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<pre class="fragment"><code class="python">>>> 1_00_00_00_00_0</code></pre>
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<pre class="fragment"><code class="python">>>> '{:_}'.format(1000000)
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'1_000_000'</code></pre>
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</section>
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</section>
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<section>
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<section>
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<h2>String literals</h2>
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<pre><code class="python">>>> name = 'Julio'
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>>> f'My name is {name}'
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My name is Julio</code></pre>
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<pre class="fragment"><code class="python">>>> def f():
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... name = 'Julio'
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... print('My name is {name}'.format(**locals()))</code></pre>
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</section>
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<section>
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<pre><code class="python">
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all(list(print(f'{i} bottle{"s" if i != 1 else ""} of '
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f'beer on the wall, {str(i).lower()} '
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f'bottle{"s" if i != 1 else ""} of beer.\n{"Take one '
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f'down pass it around" if str(i).lower() == str(i) '
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f'else "Go to the store and buy some more"}, '
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f'{i-1 if i not in [1, "No more"] else "no more" '
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f'if i == 1 else 99} bottles of beer on the wall.\n') \
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for i in list(range(99, 0, -1))+['No more'])) \
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or ""
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</code></pre>
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</section>
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</section>
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<section>
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<section>
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<h2>Type annotations</h2>
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<p>Só pra lembrar...</p>
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<pre><code class="python">>>> def(name: str) -> str:
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... return 'Hello ' + name</code></pre>
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<p class="fragment">
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Não signfica que o CPython valida o parâmetro ou o retorno.
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</p>
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</section>
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<section>
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<pre><code class="python">>>> captain: str # None</code></pre>
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<pre><code class="python">>>> values: List[int] = [1, 2, 4]</code></pre>
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<p class="fragment">Essas informações podem ser extraídas de <code>__annotations__</code>
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(assim como docstrings podem ser extraídas de <code>__doc__</code>).</p>
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</section>
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</section>
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<section>
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<section>
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<h2>secrets</h2>
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<p>Nova biblioteca para geração de números randômicos "fortes", utilizados
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para criptografia.</p>
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<pre><code class="python">>>> token_hex(16)
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'f9bf78b9a18ce6d46a0cd2b0b86df9da'</code></pre>
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</section>
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</section>
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<section>
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<section>
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<h2>Pathlib</h2>
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<p>Representação de um caminho qualquer no sistema de arquivos.</p>
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<pre><code class="python">>>> import pathlib
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>>> with open(pathlib.Path("README")) as f:
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... contents = f.read()
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...
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>>> import os.path
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>>> os.path.splitext(pat)
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('some_file', '.txt')</code></pre>
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</section>
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<section>
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<p>Nova função para tornar objetos Path-like: <code>__fspath()__</code></p>
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</section>
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</section>
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<section>
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<section>
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<h2>Novos "dicionários"</h2>
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<p><code>dict</code> agora é mais compacto.</p>
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<p class="fragment">Efeito colateral: agora são ordenados em CPython,
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mas não no spec da linguagem Python.</p>
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</section>
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<section>
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<ul>
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<li><code>**kwargs</code> agora são ordenados.</li>
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<li><code>__dict__</code> agora é ordenado.</li>
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</ul>
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</section>
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</section>
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<section>
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<section>
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<h2>Async the world!</h2>
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</section>
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</section>
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</div>
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</div>
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<script src="reveal.js/lib/js/head.min.js"></script>
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<script src="reveal.js/js/reveal.js"></script>
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<script>
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// Full list of configuration options available at:
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// https://github.com/hakimel/reveal.js#configuration
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Reveal.initialize({
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controls: true,
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progress: true,
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history: true,
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center: true,
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// showNotes: true,
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transition: 'slide', // none/fade/slide/convex/concave/zoom
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// Optional reveal.js plugins
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dependencies: [
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{ src: 'reveal.js/lib/js/classList.js', condition: function() { return !document.body.classList; } },
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{ src: 'reveal.js/plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
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{ src: 'reveal.js/plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
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{ src: 'reveal.js/plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
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{ src: 'reveal.js/plugin/zoom-js/zoom.js', async: true },
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{ src: 'reveal.js/plugin/notes/notes.js', async: true }
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]
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});
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</script>
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</body>
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</html>
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