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python-cheatsheet
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Enum, Image

pull/109/merge
Jure Šorn 1 year ago
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2 changed files with 19 additions and 19 deletions
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  1. 16
      README.md
  2. 22
      index.html

16
README.md
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@ -1328,13 +1328,13 @@ from enum import Enum, auto
```python
class <enum_name>(Enum):
<member_name_1> = <value_1>
<member_name_2> = <value_2_a>, <value_2_b>
<member_name_3> = auto()
<member_name> = auto()
<member_name> = <value>
<member_name> = <value>, <value>
```
* **If there are no numeric values before auto(), it returns 1.**
* **Otherwise it returns an increment of the last numeric value.**
* **Function auto() returns an increment of the last numeric value or 1.**
* **Accessing a member named after a reserved keyword causes SyntaxError.**
* **Methods receive the member they were called on as the 'self' argument.**
```python
<member> = <enum>.<member_name> # Returns a member.
@ -1353,7 +1353,7 @@ class <enum_name>(Enum):
```python
def get_next_member(member):
members = list(member.__class__)
members = list(type(member))
index = members.index(member) + 1
return members[index % len(members)]
```
@ -2754,7 +2754,7 @@ Image
-----
```python
# $ pip3 install pillow
from PIL import Image, ImageFilter, ImageEnhance, ImageDraw
from PIL import Image, ImageDraw
```
```python
@ -2774,7 +2774,6 @@ from PIL import Image, ImageFilter, ImageEnhance, ImageDraw
```
```python
<Image> = <Image>.resize((width, height)) # Use <Image>.width/height for original sizes.
<Image> = <Image>.filter(<Filter>) # `<Filter> = ImageFilter.<name>([<args>])`
<Image> = <Enhance>.enhance(<float>) # `<Enhance> = ImageEnhance.<name>(<Image>)`
```
@ -2820,6 +2819,7 @@ img.show()
<ImageDraw>.rectangle((x1, y1, x2, y2)) # To rotate use Image's rotate() and paste().
<ImageDraw>.polygon((x1, y1, x2, y2, ...)) # Last point gets connected to the first.
<ImageDraw>.ellipse((x1, y1, x2, y2)) # To rotate use Image's rotate() and paste().
<ImageDraw>.text((x, y), text, font=<Font>) # `<Font> = ImageFont.truetype(<path>, size)`
```
* **Use `'fill=<color>'` to set the primary color.**
* **Use `'width=<int>'` to set the width of lines or contours.**

22
index.html
View File

@ -54,7 +54,7 @@
<body>
<header>
<aside>April 2, 2023</aside>
<aside>April 3, 2023</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header>
@ -1143,14 +1143,14 @@ Hello World!
</code></pre></div>
<pre><code class="python language-python hljs"><span class="hljs-class"><span class="hljs-keyword">class</span> &lt;<span class="hljs-title">enum_name</span>&gt;<span class="hljs-params">(Enum)</span>:</span>
&lt;member_name_1&gt; = &lt;value_1&gt;
&lt;member_name_2&gt; = &lt;value_2_a&gt;, &lt;value_2_b&gt;
&lt;member_name_3&gt; = auto()
&lt;member_name&gt; = auto()
&lt;member_name&gt; = &lt;value&gt;
&lt;member_name&gt; = &lt;value&gt;, &lt;value&gt;
</code></pre>
<ul>
<li><strong>If there are no numeric values before auto(), it returns 1.</strong></li>
<li><strong>Otherwise it returns an increment of the last numeric value.</strong></li>
<li><strong>Function auto() returns an increment of the last numeric value or 1.</strong></li>
<li><strong>Accessing a member named after a reserved keyword causes SyntaxError.</strong></li>
<li><strong>Methods receive the member they were called on as the 'self' argument.</strong></li>
</ul>
<pre><code class="python language-python hljs">&lt;member&gt; = &lt;enum&gt;.&lt;member_name&gt; <span class="hljs-comment"># Returns a member.</span>
&lt;member&gt; = &lt;enum&gt;[<span class="hljs-string">'&lt;member_name&gt;'</span>] <span class="hljs-comment"># Returns a member. Raises KeyError.</span>
@ -1164,7 +1164,7 @@ Hello World!
&lt;member&gt; = random.choice(list(&lt;enum&gt;)) <span class="hljs-comment"># Returns a random member.</span>
</code></pre>
<pre><code class="python language-python hljs"><span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_next_member</span><span class="hljs-params">(member)</span>:</span>
members = list(member.__class__)
members = list(type(member))
index = members.index(member) + <span class="hljs-number">1</span>
<span class="hljs-keyword">return</span> members[index % len(members)]
</code></pre>
@ -2252,7 +2252,7 @@ right = [[<span class="hljs-number">0.1</span>, <span class="hljs-number">0.6</
<div><h2 id="image"><a href="#image" name="image">#</a>Image</h2><pre><code class="python language-python hljs"><span class="hljs-comment"># $ pip3 install pillow</span>
<span class="hljs-keyword">from</span> PIL <span class="hljs-keyword">import</span> Image, ImageFilter, ImageEnhance, ImageDraw
<span class="hljs-keyword">from</span> PIL <span class="hljs-keyword">import</span> Image, ImageDraw
</code></pre></div>
<pre><code class="python language-python hljs">&lt;Image&gt; = Image.new(<span class="hljs-string">'&lt;mode&gt;'</span>, (width, height)) <span class="hljs-comment"># Also `color=&lt;int/tuple/str&gt;`.</span>
@ -2267,8 +2267,7 @@ right = [[<span class="hljs-number">0.1</span>, <span class="hljs-number">0.6</
&lt;Image&gt;.putdata(&lt;list/ImagingCore&gt;) <span class="hljs-comment"># Writes a flattened sequence of pixels.</span>
&lt;Image&gt;.paste(&lt;Image&gt;, (x, y)) <span class="hljs-comment"># Writes passed image to the image.</span>
</code></pre>
<pre><code class="python language-python hljs">&lt;Image&gt; = &lt;Image&gt;.resize((width, height)) <span class="hljs-comment"># Use &lt;Image&gt;.width/height for original sizes.</span>
&lt;Image&gt; = &lt;Image&gt;.filter(&lt;Filter&gt;) <span class="hljs-comment"># `&lt;Filter&gt; = ImageFilter.&lt;name&gt;([&lt;args&gt;])`</span>
<pre><code class="python language-python hljs">&lt;Image&gt; = &lt;Image&gt;.filter(&lt;Filter&gt;) <span class="hljs-comment"># `&lt;Filter&gt; = ImageFilter.&lt;name&gt;([&lt;args&gt;])`</span>
&lt;Image&gt; = &lt;Enhance&gt;.enhance(&lt;float&gt;) <span class="hljs-comment"># `&lt;Enhance&gt; = ImageEnhance.&lt;name&gt;(&lt;Image&gt;)`</span>
</code></pre>
<pre><code class="python language-python hljs">&lt;array&gt; = np.array(&lt;Image&gt;) <span class="hljs-comment"># Creates NumPy array from the image.</span>
@ -2305,6 +2304,7 @@ img.show()
&lt;ImageDraw&gt;.rectangle((x1, y1, x2, y2)) <span class="hljs-comment"># To rotate use Image's rotate() and paste().</span>
&lt;ImageDraw&gt;.polygon((x1, y1, x2, y2, ...)) <span class="hljs-comment"># Last point gets connected to the first.</span>
&lt;ImageDraw&gt;.ellipse((x1, y1, x2, y2)) <span class="hljs-comment"># To rotate use Image's rotate() and paste().</span>
&lt;ImageDraw&gt;.text((x, y), text, font=&lt;Font&gt;) <span class="hljs-comment"># `&lt;Font&gt; = ImageFont.truetype(&lt;path&gt;, size)`</span>
</code></pre></div>
<ul>
@ -2935,7 +2935,7 @@ $ pyinstaller script.py --add-data '&lt;path&gt;:.' <span class="hljs-comment">
<footer>
<aside>April 2, 2023</aside>
<aside>April 3, 2023</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer>

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