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python-cheatsheet
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Jure Šorn 3 days ago
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2 changed files with 9 additions and 9 deletions
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  1. 4
      README.md
  2. 14
      index.html

4
README.md
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@ -1684,8 +1684,8 @@ from pathlib import Path
```python
<Path> = <Path>.parent # Returns Path without the final component.
<str> = <Path>.name # Returns final component as a string.
<str> = <Path>.stem # Returns final component w/o last extension.
<str> = <Path>.suffix # Returns last extension prepended with a dot.
<str> = <Path>.suffix # Returns name's last extension, e.g. '.py'.
<str> = <Path>.stem # Returns name without last extension.
<tup.> = <Path>.parts # Returns all path's components as strings.
```

14
index.html
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@ -56,7 +56,7 @@
<body>
<header>
<aside>May 7, 2025</aside>
<aside>May 8, 2025</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header>
@ -1430,8 +1430,8 @@ args = p.parse_args() <span class="h
</code></pre>
<pre><code class="python language-python hljs">&lt;Path&gt; = &lt;Path&gt;.parent <span class="hljs-comment"># Returns Path without the final component.</span>
&lt;str&gt; = &lt;Path&gt;.name <span class="hljs-comment"># Returns final component as a string.</span>
&lt;str&gt; = &lt;Path&gt;.suffix <span class="hljs-comment"># Returns name's last extension (e.g. '.py').</span>
&lt;str&gt; = &lt;Path&gt;.stem <span class="hljs-comment"># Returns name without its last extension.</span>
&lt;str&gt; = &lt;Path&gt;.suffix <span class="hljs-comment"># Returns name's last extension, e.g. '.py'.</span>
&lt;str&gt; = &lt;Path&gt;.stem <span class="hljs-comment"># Returns name without last extension.</span>
&lt;tup.&gt; = &lt;Path&gt;.parts <span class="hljs-comment"># Returns all path's components as strings.</span>
</code></pre>
<pre><code class="python language-python hljs">&lt;iter&gt; = &lt;Path&gt;.iterdir() <span class="hljs-comment"># Returns directory contents as Path objects.</span>
@ -1591,8 +1591,8 @@ CompletedProcess(args=[<span class="hljs-string">'bc'</span>, <span class="hljs-
&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>) <span class="hljs-comment"># depending on whether any exception occurred.</span>
</code></pre></div>
<div><h3 id="placeholders">Placeholders</h3><pre><code class="python language-python hljs">&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;list/tuple&gt;) <span class="hljs-comment"># Replaces every '?' with an item.</span>
&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;dict/namedtuple&gt;) <span class="hljs-comment"># Replaces every ':&lt;key&gt;' with a value.</span>
<div><h3 id="placeholders">Placeholders</h3><pre><code class="python language-python hljs">&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;list/tuple&gt;) <span class="hljs-comment"># Replaces '?'s in query with values.</span>
&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;dict/namedtuple&gt;) <span class="hljs-comment"># Replaces ':&lt;key&gt;'s with values.</span>
&lt;conn&gt;.executemany(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;coll_of_coll&gt;) <span class="hljs-comment"># Runs execute() multiple times.</span>
</code></pre></div>
@ -1612,7 +1612,7 @@ CompletedProcess(args=[<span class="hljs-string">'bc'</span>, <span class="hljs-
<span class="hljs-keyword">from</span> sqlalchemy <span class="hljs-keyword">import</span> create_engine, text
&lt;engine&gt; = create_engine(<span class="hljs-string">'&lt;url&gt;'</span>) <span class="hljs-comment"># Url: 'dialect://user:password@host/dbname'.</span>
&lt;conn&gt; = &lt;engine&gt;.connect() <span class="hljs-comment"># Creates a connection. Also &lt;conn&gt;.close().</span>
&lt;cursor&gt; = &lt;conn&gt;.execute(text(<span class="hljs-string">'&lt;query&gt;'</span>), …) <span class="hljs-comment"># `&lt;dict&gt;`. Replaces every ':&lt;key&gt;' with value.</span>
&lt;cursor&gt; = &lt;conn&gt;.execute(text(<span class="hljs-string">'&lt;query&gt;'</span>), …) <span class="hljs-comment"># `&lt;dict&gt;`. Replaces ':&lt;key&gt;'s with values.</span>
<span class="hljs-keyword">with</span> &lt;conn&gt;.begin(): ... <span class="hljs-comment"># Exits the block with commit or rollback.</span>
</code></pre></div>
@ -2940,7 +2940,7 @@ $ deactivate <span class="hljs-comment"># Deactivates the active
<footer>
<aside>May 7, 2025</aside>
<aside>May 8, 2025</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer>

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