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python-cheatsheet
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Image, Pygame

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Jure Šorn 3 years ago
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  1. 12
      README.md
  2. 16
      index.html

12
README.md
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@ -2590,7 +2590,7 @@ Line # Mem usage Increment Line Contents
```
### Call Graph
#### Generates a PNG image of a call graph with highlighted bottlenecks:
#### Generates a PNG image of the call graph with highlighted bottlenecks:
```python
# $ pip3 install pycallgraph2
from pycallgraph2 import output, PyCallGraph
@ -2742,8 +2742,8 @@ from PIL import Image
#### Creates a PNG image of a rainbow gradient:
```python
WIDTH, HEIGHT = 100, 100
size = WIDTH * HEIGHT
hues = (255 * i/size for i in range(size))
n_pixels = WIDTH * HEIGHT
hues = (255 * i/n_pixels for i in range(n_pixels))
img = Image.new('HSV', (WIDTH, HEIGHT))
img.putdata([(int(h), 255, 255) for h in hues])
img.convert('RGB').save('test.png')
@ -3064,13 +3064,13 @@ def stop_on_collision(spd, bounds):
y=0 if (D.n in bounds and spd.y < 0) or (D.s in bounds and spd.y > 0) else spd.y)
def draw(screen, images, mario, tiles, pressed):
def get_frame_index():
def get_marios_image_index():
if D.s not in get_boundaries(mario.rect, tiles):
return 4
return next(mario.frame_cycle) if {D.w, D.e} & pressed else 6
screen.fill((85, 168, 255))
mario.facing_left = (D.w in pressed) if {D.w, D.e} & pressed else mario.facing_left
screen.blit(images[get_frame_index() + mario.facing_left * 9], mario.rect)
screen.blit(images[get_marios_image_index() + mario.facing_left * 9], mario.rect)
for rect in tiles:
screen.blit(images[18 if {*rect.topleft} & {0, (SIZE-1)*16} else 19], rect)
pg.display.flip()
@ -3387,7 +3387,7 @@ df = df.rename({'date': 'Date', 'Continent_Name': 'Continent'}, axis='columns')
line(df, x='Date', y='Total Deaths per Million', color='Continent').show()
```
#### Confirmed covid cases, Dow Jones, gold, and Bitcoin price:
#### Confirmed covid cases, Dow Jones, Gold, and Bitcoin price:
![Covid Cases](web/covid_cases.png)
<div id="e23ccacc-a456-478b-b467-7282a2165921" class="plotly-graph-div" style="height:315px; width:100%;"></div>

16
index.html
View File

@ -226,7 +226,7 @@ pre.prettyprint {
<body>
<header>
<aside>October 22, 2021</aside>
<aside>October 29, 2021</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header>
@ -2259,7 +2259,7 @@ Line # Mem usage Increment Line Contents
3 38.012 MiB 0.344 MiB a = [*range(10000)]
4 38.477 MiB 0.465 MiB b = {*range(10000)}
</code></pre>
<div><h3 id="callgraph">Call Graph</h3><div><h4 id="generatesapngimageofacallgraphwithhighlightedbottlenecks">Generates a PNG image of a call graph with highlighted bottlenecks:</h4><pre><code class="python language-python hljs"><span class="hljs-comment"># $ pip3 install pycallgraph2</span>
<div><h3 id="callgraph">Call Graph</h3><div><h4 id="generatesapngimageofthecallgraphwithhighlightedbottlenecks">Generates a PNG image of the call graph with highlighted bottlenecks:</h4><pre><code class="python language-python hljs"><span class="hljs-comment"># $ pip3 install pycallgraph2</span>
<span class="hljs-keyword">from</span> pycallgraph2 <span class="hljs-keyword">import</span> output, PyCallGraph
<span class="hljs-keyword">from</span> datetime <span class="hljs-keyword">import</span> datetime
filename = <span class="hljs-string">f'profile-<span class="hljs-subst">{datetime.now():%Y%m%d%H%M%S}</span>.png'</span>
@ -2368,8 +2368,8 @@ right = [[<span class="hljs-number">0.1</span>, <span class="hljs-number">0.6</s
<li><strong><code class="python hljs"><span class="hljs-string">'RGBA'</span></code> - 4x8-bit pixels, true color with transparency mask.</strong></li>
<li><strong><code class="python hljs"><span class="hljs-string">'HSV'</span></code> - 3x8-bit pixels, Hue, Saturation, Value color space.</strong></li>
</ul><div><h3 id="examples">Examples</h3><div><h4 id="createsapngimageofarainbowgradient">Creates a PNG image of a rainbow gradient:</h4><pre><code class="python language-python hljs">WIDTH, HEIGHT = <span class="hljs-number">100</span>, <span class="hljs-number">100</span>
size = WIDTH * HEIGHT
hues = (<span class="hljs-number">255</span> * i/size <span class="hljs-keyword">for</span> i <span class="hljs-keyword">in</span> range(size))
n_pixels = WIDTH * HEIGHT
hues = (<span class="hljs-number">255</span> * i/n_pixels <span class="hljs-keyword">for</span> i <span class="hljs-keyword">in</span> range(n_pixels))
img = Image.new(<span class="hljs-string">'HSV'</span>, (WIDTH, HEIGHT))
img.putdata([(int(h), <span class="hljs-number">255</span>, <span class="hljs-number">255</span>) <span class="hljs-keyword">for</span> h <span class="hljs-keyword">in</span> hues])
img.convert(<span class="hljs-string">'RGB'</span>).save(<span class="hljs-string">'test.png'</span>)
@ -2639,13 +2639,13 @@ SIZE, MAX_SPEED = <span class="hljs-number">50</span>, P(<span class="hljs-numbe
y=<span class="hljs-number">0</span> <span class="hljs-keyword">if</span> (D.n <span class="hljs-keyword">in</span> bounds <span class="hljs-keyword">and</span> spd.y &lt; <span class="hljs-number">0</span>) <span class="hljs-keyword">or</span> (D.s <span class="hljs-keyword">in</span> bounds <span class="hljs-keyword">and</span> spd.y &gt; <span class="hljs-number">0</span>) <span class="hljs-keyword">else</span> spd.y)
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">draw</span><span class="hljs-params">(screen, images, mario, tiles, pressed)</span>:</span>
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_frame_index</span><span class="hljs-params">()</span>:</span>
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_marios_image_index</span><span class="hljs-params">()</span>:</span>
<span class="hljs-keyword">if</span> D.s <span class="hljs-keyword">not</span> <span class="hljs-keyword">in</span> get_boundaries(mario.rect, tiles):
<span class="hljs-keyword">return</span> <span class="hljs-number">4</span>
<span class="hljs-keyword">return</span> next(mario.frame_cycle) <span class="hljs-keyword">if</span> {D.w, D.e} &amp; pressed <span class="hljs-keyword">else</span> <span class="hljs-number">6</span>
screen.fill((<span class="hljs-number">85</span>, <span class="hljs-number">168</span>, <span class="hljs-number">255</span>))
mario.facing_left = (D.w <span class="hljs-keyword">in</span> pressed) <span class="hljs-keyword">if</span> {D.w, D.e} &amp; pressed <span class="hljs-keyword">else</span> mario.facing_left
screen.blit(images[get_frame_index() + mario.facing_left * <span class="hljs-number">9</span>], mario.rect)
screen.blit(images[get_marios_image_index() + mario.facing_left * <span class="hljs-number">9</span>], mario.rect)
<span class="hljs-keyword">for</span> rect <span class="hljs-keyword">in</span> tiles:
screen.blit(images[<span class="hljs-number">18</span> <span class="hljs-keyword">if</span> {*rect.topleft} &amp; {<span class="hljs-number">0</span>, (SIZE<span class="hljs-number">-1</span>)*<span class="hljs-number">16</span>} <span class="hljs-keyword">else</span> <span class="hljs-number">19</span>], rect)
pg.display.flip()
@ -2894,7 +2894,7 @@ line(df, x=<span class="hljs-string">'Date'</span>, y=<span class="hljs-string">
<div><h4 id="confirmedcovidcasesdowjonesgoldandbitcoinprice">Confirmed covid cases, Dow Jones, gold, and Bitcoin price:</h4><p></p><div id="e23ccacc-a456-478b-b467-7282a2165921" class="plotly-graph-div" style="height:315px; width:100%;"></div><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> pandas <span class="hljs-keyword">as</span> pd
<div><h4 id="confirmedcovidcasesdowjonesgoldandbitcoinprice">Confirmed covid cases, Dow Jones, Gold, and Bitcoin price:</h4><p></p><div id="e23ccacc-a456-478b-b467-7282a2165921" class="plotly-graph-div" style="height:315px; width:100%;"></div><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> pandas <span class="hljs-keyword">as</span> pd
<span class="hljs-keyword">import</span> plotly.graph_objects <span class="hljs-keyword">as</span> go
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">main</span><span class="hljs-params">()</span>:</span>
@ -3017,7 +3017,7 @@ $ pyinstaller script.py --add-data '&lt;path&gt;:.' <span class="hljs-comment">
<footer>
<aside>October 22, 2021</aside>
<aside>October 29, 2021</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer>

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