richard
/
python-cheatsheet
mirror of https://github.com/gto76/python-cheatsheet.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

String, Format, Exceptions

pull/140/head
Jure Šorn 1 year ago
parent
212b127375
commit
2f3b3a4736
2 changed files with 6 additions and 8 deletions
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 5
      README.md
  2. 9
      index.html

5
README.md
View File

@ -344,7 +344,7 @@ String
| isdecimal() | | | | | yes |
+---------------+----------+----------+----------+----------+----------+
```
* **Also: `'isspace()'` checks for `'[ \t\n\r\f\v\x1c-\x1f\x85\u2000…]'`.**
* **`'isspace()'` checks for whitespaces: `'[ \t\n\r\f\v\x1c-\x1f\x85\xa0\u1680…]'`.**
Regex
@ -416,7 +416,6 @@ Format
```
* **Options can be generated dynamically: `f'{<el>:{<str/int>}[…]}'`.**
* **Adding `'!r'` before the colon converts object to string by calling its [repr()](#class) method.**
* **Adding `'='` before the colon prepends the expression to the result.**
### Strings
```python
@ -1394,7 +1393,7 @@ finally:
* **Code inside the `'else'` block will only be executed if `'try'` block had no exceptions.**
* **Code inside the `'finally'` block will always be executed (unless a signal is received).**
* **All variables that are initialized in executed blocks are also visible in all subsequent blocks, as well as outside the try/except clause (only function blocks delimit scope).**
* **To catch signals use `'signal.signal(signal_number, <func>)'` instead.**
* **To catch signals use `'signal.signal(signal_number, <func>)'`.**
### Catching Exceptions
```python

9
index.html
View File

@ -54,7 +54,7 @@
<body>
<header>
<aside>December 22, 2022</aside>
<aside>December 25, 2022</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header>
@ -327,7 +327,7 @@ Point(x=<span class="hljs-number">1</span>, y=<span class="hljs-number">2</span>
</code></pre></div>
<ul>
<li><strong>Also: <code class="python hljs"><span class="hljs-string">'isspace()'</span></code> checks for <code class="python hljs"><span class="hljs-string">'[ \t\n\r\f\v\x1c-\x1f\x85\u2000…]'</span></code>.</strong></li>
<li><strong><code class="python hljs"><span class="hljs-string">'isspace()'</span></code> checks for whitespaces: <code class="python hljs"><span class="hljs-string">'[ \t\n\r\f\v\x1c-\x1f\x85\xa0\u1680…]'</span></code>.</strong></li>
</ul>
<div><h2 id="regex"><a href="#regex" name="regex">#</a>Regex</h2><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> re
&lt;str&gt; = re.sub(&lt;regex&gt;, new, text, count=<span class="hljs-number">0</span>) <span class="hljs-comment"># Substitutes all occurrences with 'new'.</span>
@ -387,7 +387,6 @@ Point(x=<span class="hljs-number">1</span>, y=<span class="hljs-number">2</span>
<ul>
<li><strong>Options can be generated dynamically: <code class="python hljs"><span class="hljs-string">f'<span class="hljs-subst">{&lt;el&gt;:{&lt;str/int&gt;}</span>[…]}'</span></code>.</strong></li>
<li><strong>Adding <code class="python hljs"><span class="hljs-string">'!r'</span></code> before the colon converts object to string by calling its <a href="#class">repr()</a> method.</strong></li>
<li><strong>Adding <code class="python hljs"><span class="hljs-string">'='</span></code> before the colon prepends the expression to the result.</strong></li>
</ul>
<div><h3 id="strings">Strings</h3><pre><code class="python language-python hljs">{<span class="hljs-string">'abcde'</span>:<span class="hljs-number">10</span>} <span class="hljs-comment"># 'abcde '</span>
{<span class="hljs-string">'abcde'</span>:<span class="hljs-number">10.3</span>} <span class="hljs-comment"># 'abc '</span>
@ -1196,7 +1195,7 @@ LogicOp = Enum(<span class="hljs-string">'LogicOp'</span>, {<span class="hljs-st
<li><strong>Code inside the <code class="python hljs"><span class="hljs-string">'else'</span></code> block will only be executed if <code class="python hljs"><span class="hljs-string">'try'</span></code> block had no exceptions.</strong></li>
<li><strong>Code inside the <code class="python hljs"><span class="hljs-string">'finally'</span></code> block will always be executed (unless a signal is received).</strong></li>
<li><strong>All variables that are initialized in executed blocks are also visible in all subsequent blocks, as well as outside the try/except clause (only function blocks delimit scope).</strong></li>
<li><strong>To catch signals use <code class="python hljs"><span class="hljs-string">'signal.signal(signal_number, &lt;func&gt;)'</span></code> instead.</strong></li>
<li><strong>To catch signals use <code class="python hljs"><span class="hljs-string">'signal.signal(signal_number, &lt;func&gt;)'</span></code>.</strong></li>
</ul>
<div><h3 id="catchingexceptions">Catching Exceptions</h3><pre><code class="python language-python hljs"><span class="hljs-keyword">except</span> &lt;exception&gt;: ...
<span class="hljs-keyword">except</span> &lt;exception&gt; <span class="hljs-keyword">as</span> &lt;name&gt;: ...
@ -2911,7 +2910,7 @@ $ pyinstaller script.py --add-data '&lt;path&gt;:.' <span class="hljs-comment">
<footer>
<aside>December 22, 2022</aside>
<aside>December 25, 2022</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer>

Write Preview
Loading…
Cancel
Save