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python-cheatsheet
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Jure Šorn 3 years ago
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  1. 22
      README.md
  2. 26
      index.html

22
README.md
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@ -732,10 +732,10 @@ def f(x, *args, z, **kwargs): # f(x=1, y=2, z=3) | f(1, y=2, z=3) | f(1, 2, z=3
### Other Uses
```python
<list> = [*<collection> [, ...]]
<set> = {*<collection> [, ...]}
<tup.> = (*<collection>, [...])
<dict> = {**<dict> [, ...]}
<list> = [*<collection> [, ...]]
<set> = {*<collection> [, ...]}
<tuple> = (*<collection>, [...])
<dict> = {**<dict> [, ...]}
```
```python
@ -774,8 +774,8 @@ Inline
### Any, All
```python
<bool> = any(<collection>) # False if empty.
<bool> = all(el[1] for el in <collection>) # True if empty.
<bool> = any(<collection>) # Is `bool(el)` True for any element.
<bool> = all(<collection>) # Is True for all elements or empty.
```
### Conditional Expression
@ -788,11 +788,11 @@ Inline
['zero', 1, 2, 3]
```
### Namedtuple, Enum, Dataclass
### Named Tuple, Enum, Dataclass
```python
from collections import namedtuple
Point = namedtuple('Point', 'x y')
point = Point(0, 0)
Point = namedtuple('Point', 'x y')
point = Point(0, 0)
```
```python
@ -803,8 +803,8 @@ direction = Direction.n
```python
from dataclasses import make_dataclass
Creature = make_dataclass('Creature', ['loc', 'dir'])
creature = Creature(Point(0, 0), Direction.n)
Creature = make_dataclass('Creature', ['loc', 'dir'])
creature = Creature(point, direction)
```

26
index.html
View File

@ -226,7 +226,7 @@ pre.prettyprint {
<body>
<header>
<aside>August 11, 2021</aside>
<aside>October 1, 2021</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header>
@ -786,10 +786,10 @@ func(*args, **kwargs)
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">f</span><span class="hljs-params">(*args, y, **kwargs)</span>:</span> <span class="hljs-comment"># f(x=1, y=2, z=3) | f(1, y=2, z=3)</span>
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">f</span><span class="hljs-params">(x, *args, z, **kwargs)</span>:</span> <span class="hljs-comment"># f(x=1, y=2, z=3) | f(1, y=2, z=3) | f(1, 2, z=3)</span>
</code></pre>
<div><h3 id="otheruses">Other Uses</h3><pre><code class="python language-python hljs">&lt;list&gt; = [*&lt;collection&gt; [, ...]]
&lt;set&gt; = {*&lt;collection&gt; [, ...]}
&lt;tup.&gt; = (*&lt;collection&gt;, [...])
&lt;dict&gt; = {**&lt;dict&gt; [, ...]}
<div><h3 id="otheruses">Other Uses</h3><pre><code class="python language-python hljs">&lt;list&gt; = [*&lt;collection&gt; [, ...]]
&lt;set&gt; = {*&lt;collection&gt; [, ...]}
&lt;tuple&gt; = (*&lt;collection&gt;, [...])
&lt;dict&gt; = {**&lt;dict&gt; [, ...]}
</code></pre></div>
<pre><code class="python language-python hljs">head, *body, tail = &lt;collection&gt;
@ -816,8 +816,8 @@ func(*args, **kwargs)
<ul>
<li><strong>Reduce must be imported from functools module.</strong></li>
</ul>
<div><h3 id="anyall">Any, All</h3><pre><code class="python language-python hljs">&lt;bool&gt; = any(&lt;collection&gt;) <span class="hljs-comment"># False if empty.</span>
&lt;bool&gt; = all(el[<span class="hljs-number">1</span>] <span class="hljs-keyword">for</span> el <span class="hljs-keyword">in</span> &lt;collection&gt;) <span class="hljs-comment"># True if empty.</span>
<div><h3 id="anyall">Any, All</h3><pre><code class="python language-python hljs">&lt;bool&gt; = any(&lt;collection&gt;) <span class="hljs-comment"># Is `bool(el)` True for any element.</span>
&lt;bool&gt; = all(&lt;collection&gt;) <span class="hljs-comment"># Is True for all elements or empty.</span>
</code></pre></div>
<div><h3 id="conditionalexpression">Conditional Expression</h3><pre><code class="python language-python hljs">&lt;obj&gt; = &lt;exp_if_true&gt; <span class="hljs-keyword">if</span> &lt;condition&gt; <span class="hljs-keyword">else</span> &lt;exp_if_false&gt;
@ -826,9 +826,9 @@ func(*args, **kwargs)
<pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span>[a <span class="hljs-keyword">if</span> a <span class="hljs-keyword">else</span> <span class="hljs-string">'zero'</span> <span class="hljs-keyword">for</span> a <span class="hljs-keyword">in</span> (<span class="hljs-number">0</span>, <span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>)]
[<span class="hljs-string">'zero'</span>, <span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>]
</code></pre>
<div><h3 id="namedtupleenumdataclass">Namedtuple, Enum, Dataclass</h3><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> collections <span class="hljs-keyword">import</span> namedtuple
Point = namedtuple(<span class="hljs-string">'Point'</span>, <span class="hljs-string">'x y'</span>)
point = Point(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>)
<div><h3 id="namedtupleenumdataclass">Named Tuple, Enum, Dataclass</h3><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> collections <span class="hljs-keyword">import</span> namedtuple
Point = namedtuple(<span class="hljs-string">'Point'</span>, <span class="hljs-string">'x y'</span>)
point = Point(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>)
</code></pre></div>
<pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> enum <span class="hljs-keyword">import</span> Enum
@ -836,8 +836,8 @@ Direction = Enum(<span class="hljs-string">'Direction'</span>, <span class="hljs
direction = Direction.n
</code></pre>
<pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> dataclasses <span class="hljs-keyword">import</span> make_dataclass
Creature = make_dataclass(<span class="hljs-string">'Creature'</span>, [<span class="hljs-string">'loc'</span>, <span class="hljs-string">'dir'</span>])
creature = Creature(Point(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>), Direction.n)
Creature = make_dataclass(<span class="hljs-string">'Creature'</span>, [<span class="hljs-string">'loc'</span>, <span class="hljs-string">'dir'</span>])
creature = Creature(point, direction)
</code></pre>
<div><h2 id="closure"><a href="#closure" name="closure">#</a>Closure</h2><p><strong>We have a closure in Python when:</strong></p><ul>
<li><strong>A nested function references a value of its enclosing function and then</strong></li>
@ -3005,7 +3005,7 @@ $ pyinstaller script.py --add-data '&lt;path&gt;:.' <span class="hljs-comment">
<footer>
<aside>August 11, 2021</aside>
<aside>October 1, 2021</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer>

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