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Diff for: ‎README.md

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## Tips
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* [Python tip 13: formatting numbers with underscore separation](https://learnbyexample.github.io/tips/python-tip-13/)
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* [Vim tip 11: replace characters in Normal mode](https://learnbyexample.github.io/tips/vim-tip-11/)
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* [CLI tip 12: squeeze empty lines](https://learnbyexample.github.io/tips/cli-tip-12/)
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* [Python tip 12: negate a regex grouping](https://learnbyexample.github.io/tips/python-tip-12/)

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<link href="https://learnbyexample.github.io/atom.xml" rel="self" type="application/atom+xml"/>
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<link href="https://learnbyexample.github.io"/>
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<generator uri="https://www.getzola.org/">Zola</generator>
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<updated>2022-07-06T00:00:00+00:00</updated>
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<updated>2022-07-13T00:00:00+00:00</updated>
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<id>https://learnbyexample.github.io/atom.xml</id>
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<entry xml:lang="en">
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<title>Python tip 13: formatting numbers with underscore separation</title>
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<published>2022-07-13T00:00:00+00:00</published>
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<updated>2022-07-13T00:00:00+00:00</updated>
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<link href="https://learnbyexample.github.io/tips/python-tip-13/" type="text/html"/>
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<id>https://learnbyexample.github.io/tips/python-tip-13/</id>
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<content type="html">&lt;p&gt;For readability purposes, you can use underscores while declaring large numbers. For example:&lt;&#x2F;p&gt;
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&lt;pre style=&quot;background-color:#f5f5f5;&quot;&gt;
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&lt;code&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;1_000_000_000
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1000000000
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;0b1000_1111
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&lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;
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&lt;p&gt;Did you know that you can also format numbers with underscore separation?&lt;&#x2F;p&gt;
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&lt;pre style=&quot;background-color:#f5f5f5;&quot;&gt;
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&lt;code&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;n &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;= &lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;14310023
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#7f8989;&quot;&gt;# underscore separation
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#668f14;&quot;&gt;f&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;{n&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;:_&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;}&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;
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&amp;#39;14_310_023&amp;#39;
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#7f8989;&quot;&gt;# you can also use comma separation for integers
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#668f14;&quot;&gt;f&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;{n&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;:,&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;}&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;
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&amp;#39;14,310,023&amp;#39;
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&lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;
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&lt;p&gt;Here are some examples for displaying numbers in binary, octal and hexadecimal formats:&lt;&#x2F;p&gt;
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&lt;pre style=&quot;background-color:#f5f5f5;&quot;&gt;
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&lt;code&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;n &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;= &lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;14310023
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#668f14;&quot;&gt;f&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;{n&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;:_b&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;}&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;
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&amp;#39;1101_1010_0101_1010_1000_0111&amp;#39;
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#668f14;&quot;&gt;f&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;{n&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;:#_b&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;}&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;
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&amp;#39;0b1101_1010_0101_1010_1000_0111&amp;#39;
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#668f14;&quot;&gt;f&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;{n&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;:#_x&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;}&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;
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&amp;#39;0xda_5a87&amp;#39;
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#668f14;&quot;&gt;f&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;{n&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;:#_o&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;}&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;
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&amp;#39;0o6645_5207&amp;#39;
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&lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;
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&lt;p&gt;And here&#x27;s an example with zero filling:&lt;&#x2F;p&gt;
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&lt;pre style=&quot;background-color:#f5f5f5;&quot;&gt;
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&lt;code&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;&amp;gt;&amp;gt;&amp;gt; for &lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;n &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;in &lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;(&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;3&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;, &lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;20&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;, &lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;28&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;):
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;... &lt;&#x2F;span&gt;&lt;span style=&quot;color:#b39f04;&quot;&gt;print&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;(&lt;&#x2F;span&gt;&lt;span style=&quot;color:#668f14;&quot;&gt;f&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;{n&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;:09_b&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;}&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;)
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...
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;0000&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;_0011
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;0001&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;_0100
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&lt;&#x2F;span&gt;&lt;span style=&quot;color:#b3933a;&quot;&gt;0001&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;_1100
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&lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;
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&lt;p&gt;&lt;img src=&quot;&#x2F;images&#x2F;info.svg&quot; alt=&quot;info&quot; &#x2F;&gt; See &lt;a href=&quot;https:&#x2F;&#x2F;docs.python.org&#x2F;3&#x2F;reference&#x2F;lexical_analysis.html#f-strings&quot;&gt;docs.python: Formatted string literals&lt;&#x2F;a&gt; for documentation and other examples.&lt;&#x2F;p&gt;
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&lt;p&gt;&lt;strong&gt;Video demo&lt;&#x2F;strong&gt;:&lt;&#x2F;p&gt;
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&lt;p align=&quot;center&quot;&gt;&lt;iframe width=&quot;560&quot; height=&quot;315&quot; loading=&quot;lazy&quot; src=&quot;https:&#x2F;&#x2F;www.youtube.com&#x2F;embed&#x2F;wFg0wS8nY4o&quot; title=&quot;YouTube video player&quot; frameborder=&quot;0&quot; allow=&quot;accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture&quot; allowfullscreen&gt;&lt;&#x2F;iframe&gt;&lt;&#x2F;p&gt;
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&lt;br&gt;
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&lt;p&gt;&lt;img src=&quot;&#x2F;images&#x2F;info.svg&quot; alt=&quot;info&quot; &#x2F;&gt; See also my &lt;a href=&quot;https:&#x2F;&#x2F;github.com&#x2F;learnbyexample&#x2F;100_page_python_intro&quot;&gt;100 Page Python Intro&lt;&#x2F;a&gt; ebook.&lt;&#x2F;p&gt;
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</content>
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</entry>
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<entry xml:lang="en">
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<title>Vim tip 11: replace characters in Normal mode</title>
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<published>2022-07-06T00:00:00+00:00</published>

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<a href="https:&#x2F;&#x2F;learnbyexample.github.io&#x2F;tips&#x2F;python-tip-13&#x2F;">Python tip 13: formatting numbers with underscore separation</a>
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<a href="https:&#x2F;&#x2F;learnbyexample.github.io&#x2F;tips&#x2F;python-tip-13&#x2F;">Python tip 13: formatting numbers with underscore separation</a>
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<p>This page links to tips about <u><a href="https://learnbyexample.github.io/tips/#python">Python</a></u>, <u><a href="https://learnbyexample.github.io/tips/#command-line-tools">Command line tools</a></u> and <u><a href="https://learnbyexample.github.io/tips/#vim">Vim</a></u></p>
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<h2 id="python-snake"><p style="color: #ff6600"><a name="python"></a>Python 🐍</h2>
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<ul>
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<li><a href="https://learnbyexample.github.io/tips/python-tip-13/">Python tip 13: formatting numbers with underscore separation</a></li>
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<li><a href="https://learnbyexample.github.io/tips/python-tip-12/">Python tip 12: negate a regex grouping</a></li>
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<li><a href="https://learnbyexample.github.io/tips/python-tip-11/">Python tip 11: capture external command output</a></li>
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<li><a href="https://learnbyexample.github.io/tips/python-tip-10/">Python tip 10: removeprefix and removesuffix string methods</a></li>

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