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python-cheatsheet
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pull/102/head
Jure Šorn 3 years ago
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cab456867b
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606208ac68
4 changed files with 16 additions and 18 deletions
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  1. 15
      README.md
  2. 15
      index.html
  3. 2
      pdf/index_for_pdf.html
  4. 2
      pdf/index_for_pdf_print.html

15
README.md
View File

@ -2496,7 +2496,7 @@ def send_page(sport):
### REST Request
```python
@post('/odds/<sport>')
@post('/<sport>/odds')
def odds_handler(sport):
team = request.forms.get('team')
home_odds, away_odds = 2.44, 3.29
@ -2510,7 +2510,7 @@ def odds_handler(sport):
# $ pip3 install requests
>>> import threading, requests
>>> threading.Thread(target=run, daemon=True).start()
>>> url = 'http://localhost:8080/odds/football'
>>> url = 'http://localhost:8080/football/odds'
>>> data = {'team': 'arsenal f.c.'}
>>> response = requests.post(url, data=data)
>>> response.json()
@ -2577,11 +2577,10 @@ Line # Mem usage Increment Line Contents
### Call Graph
#### Generates a PNG image of a call graph with highlighted bottlenecks:
```python
# $ pip3 install pycallgraph
from pycallgraph import output, PyCallGraph
# $ pip3 install pycallgraph2
from pycallgraph2 import output, PyCallGraph
from datetime import datetime
time_str = datetime.now().strftime('%Y%m%d%H%M%S')
filename = f'profile-{time_str}.png'
filename = f'profile-{datetime.now():%Y%m%d%H%M%S}.png'
drawer = output.GraphvizOutput(output_file=filename)
with PyCallGraph(drawer):
<code_to_be_profiled>
@ -2961,14 +2960,14 @@ while all(event.type != pg.QUIT for event in pg.event.get()):
```
```python
from pygame.transform import scale, …
from pygame.transform import scale, ...
<Surf> = scale(<Surf>, (width, height)) # Returns scaled surface.
<Surf> = rotate(<Surf>, degrees) # Returns rotated and scaled surface.
<Surf> = flip(<Surf>, x_bool, y_bool) # Returns flipped surface.
```
```python
from pygame.draw import line, …
from pygame.draw import line, ...
line(<Surf>, color, (x1, y1), (x2, y2), width) # Draws a line to the surface.
arc(<Surf>, color, <Rect>, from_rad, to_rad) # Also: ellipse(<Surf>, color, <Rect>)
rect(<Surf>, color, <Rect>) # Also: polygon(<Surf>, color, points)

15
index.html
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@ -2184,7 +2184,7 @@ run(host=<span class="hljs-string">'0.0.0.0'</span>, port=<span class="hljs-numb
<span class="hljs-keyword">return</span> template(<span class="hljs-string">'&lt;h1&gt;{{title}}&lt;/h1&gt;'</span>, title=sport)
</code></pre></div>
<div><h3 id="restrequest">REST Request</h3><pre><code class="python language-python hljs"><span class="hljs-meta">@post('/odds/&lt;sport&gt;')</span>
<div><h3 id="restrequest">REST Request</h3><pre><code class="python language-python hljs"><span class="hljs-meta">@post('/&lt;sport&gt;/odds')</span>
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">odds_handler</span><span class="hljs-params">(sport)</span>:</span>
team = request.forms.get(<span class="hljs-string">'team'</span>)
home_odds, away_odds = <span class="hljs-number">2.44</span>, <span class="hljs-number">3.29</span>
@ -2196,7 +2196,7 @@ run(host=<span class="hljs-string">'0.0.0.0'</span>, port=<span class="hljs-numb
<div><h4 id="test">Test:</h4><pre><code class="python language-python hljs"><span class="hljs-comment"># $ pip3 install requests</span>
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> threading, requests
<span class="hljs-meta">&gt;&gt;&gt; </span>threading.Thread(target=run, daemon=<span class="hljs-keyword">True</span>).start()
<span class="hljs-meta">&gt;&gt;&gt; </span>url = <span class="hljs-string">'http://localhost:8080/odds/football'</span>
<span class="hljs-meta">&gt;&gt;&gt; </span>url = <span class="hljs-string">'http://localhost:8080/football/odds'</span>
<span class="hljs-meta">&gt;&gt;&gt; </span>data = {<span class="hljs-string">'team'</span>: <span class="hljs-string">'arsenal f.c.'</span>}
<span class="hljs-meta">&gt;&gt;&gt; </span>response = requests.post(url, data=data)
<span class="hljs-meta">&gt;&gt;&gt; </span>response.json()
@ -2246,11 +2246,10 @@ 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 pycallgraph</span>
<span class="hljs-keyword">from</span> pycallgraph <span class="hljs-keyword">import</span> output, PyCallGraph
<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>
<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
time_str = datetime.now().strftime(<span class="hljs-string">'%Y%m%d%H%M%S'</span>)
filename = <span class="hljs-string">f'profile-<span class="hljs-subst">{time_str}</span>.png'</span>
filename = <span class="hljs-string">f'profile-<span class="hljs-subst">{datetime.now():%Y%m%d%H%M%S}</span>.png'</span>
drawer = output.GraphvizOutput(output_file=filename)
<span class="hljs-keyword">with</span> PyCallGraph(drawer):
&lt;code_to_be_profiled&gt;
@ -2547,12 +2546,12 @@ rect = pg.Rect(<span class="hljs-number">240</span>, <span class="hljs-number">2
&lt;Surf&gt;.set_at((x, y), color) <span class="hljs-comment"># Updates pixel.</span>
&lt;Surf&gt;.blit(&lt;Surf&gt;, (x, y)) <span class="hljs-comment"># Draws passed surface to the surface.</span>
</code></pre>
<pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> pygame.transform <span class="hljs-keyword">import</span> scale, …
<pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> pygame.transform <span class="hljs-keyword">import</span> scale, ...
&lt;Surf&gt; = scale(&lt;Surf&gt;, (width, height)) <span class="hljs-comment"># Returns scaled surface.</span>
&lt;Surf&gt; = rotate(&lt;Surf&gt;, degrees) <span class="hljs-comment"># Returns rotated and scaled surface.</span>
&lt;Surf&gt; = flip(&lt;Surf&gt;, x_bool, y_bool) <span class="hljs-comment"># Returns flipped surface.</span>
</code></pre>
<pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> pygame.draw <span class="hljs-keyword">import</span> line, …
<pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> pygame.draw <span class="hljs-keyword">import</span> line, ...
line(&lt;Surf&gt;, color, (x1, y1), (x2, y2), width) <span class="hljs-comment"># Draws a line to the surface.</span>
arc(&lt;Surf&gt;, color, &lt;Rect&gt;, from_rad, to_rad) <span class="hljs-comment"># Also: ellipse(&lt;Surf&gt;, color, &lt;Rect&gt;)</span>
rect(&lt;Surf&gt;, color, &lt;Rect&gt;) <span class="hljs-comment"># Also: polygon(&lt;Surf&gt;, color, points)</span>

2
pdf/index_for_pdf.html
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@ -51,7 +51,7 @@
<p><strong>files, <a href="#print">22</a>-<a href="#memoryview">29</a>, <a href="#runsabasicfileexplorerintheterminal">34</a>, <a href="#encodedecode">46</a></strong><br>
<strong>filter function, <a href="#mapfilterreduce">11</a></strong><br>
<strong>floats, <a href="#abstractbaseclasses">4</a>, <a href="#floats">6</a>, <a href="#types">7</a></strong><br>
<strong>format, <a href="#format">6</a>-<a href="#comparisonofpresentationtypes">7</a></strong><br>
<strong>format, <a href="#format">6</a>-<a href="#comparisonofpresentationtypes">7</a>, <a href="#callgraph">37</a></strong><br>
<strong>functools module, <a href="#mapfilterreduce">11</a>, <a href="#partial">12</a>, <a href="#debuggerexample">13</a>, <a href="#sortable">16</a></strong><br>
<strong>futures, <a href="#threadpoolexecutor">30</a></strong> </p>
<h3 id="g">G</h3>

2
pdf/index_for_pdf_print.html
View File

@ -51,7 +51,7 @@
<p><strong>files, 22-29, 34, 46</strong><br>
<strong>filter function, 11</strong><br>
<strong>floats, 4, 6, 7</strong><br>
<strong>format, 6-7</strong><br>
<strong>format, 6-7, 37</strong><br>
<strong>functools module, 11, 12, 13, 16</strong><br>
<strong>futures, 30</strong> </p>
<h3 id="g">G</h3>

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