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

Image, Plotly, Cython

pull/195/head
Jure Šorn 2 months ago
parent
8447a11ca0
commit
c62e8a8a89
2 changed files with 16 additions and 16 deletions
Split View
  1. 14
      README.md
  2. 18
      index.html

14
README.md
View File

@ -2828,11 +2828,11 @@ img.show()
from PIL import ImageDraw
<Draw> = ImageDraw.Draw(<Image>) # Object for adding 2D graphics to the image.
<Draw>.point((x, y)) # Draws a point. Truncates floats into ints.
<Draw>.line((x1, y1, x2, y2 [, ...])) # To get anti-aliasing use Image's resize().
<Draw>.line((x1, y1, x2, y2 [, ...])) # For anti-aliasing use <Image>.resize((w, h)).
<Draw>.arc((x1, y1, x2, y2), deg1, deg2) # Draws in clockwise dir. Also pieslice().
<Draw>.rectangle((x1, y1, x2, y2)) # Also rounded_rectangle(), regular_polygon().
<Draw>.polygon((x1, y1, x2, y2, ...)) # Last point gets connected to the first.
<Draw>.ellipse((x1, y1, x2, y2)) # To rotate use Image's rotate() and paste().
<Draw>.polygon((x1, y1, x2, y2, ...)) # Last point gets connected to the first one.
<Draw>.ellipse((x1, y1, x2, y2)) # To rotate use <Image>.rotate(anticlock_deg).
<Draw>.text((x, y), <str>, font=<Font>) # `<Font> = ImageFont.truetype(<path>, size)`.
```
* **Use `'fill=<color>'` to set the primary color.**
@ -3457,7 +3457,7 @@ px.line(df, x='Date', y='Total Deaths per Million', color='Continent').show()
```python
# $ pip3 install pandas lxml selenium plotly
import pandas as pd, selenium.webdriver, plotly.graph_objects as go
import pandas as pd, selenium.webdriver, io, plotly.graph_objects as go
def main():
covid, (bitcoin, gold, dow) = get_covid_cases(), get_tickers()
@ -3466,7 +3466,7 @@ def main():
def get_covid_cases():
url = 'https://covid.ourworldindata.org/data/owid-covid-data.csv'
df = pd.read_csv(url, usecols=['location', 'date', 'total_cases'], parse_dates=['date'])
df = pd.read_csv(url, parse_dates=['date'])
df = df[df.location == 'World']
s = df.set_index('date').total_cases
return s.rename('Total Cases')
@ -3482,7 +3482,7 @@ def get_ticker(driver, name, symbol):
driver.get(url + '?period1=1579651200&period2=9999999999')
if buttons := driver.find_elements('xpath', '//button[@name="reject"]'):
buttons[0].click()
dataframes = pd.read_html(driver.page_source, parse_dates=['Date'])
dataframes = pd.read_html(io.StringIO(driver.page_source), parse_dates=['Date'])
s = dataframes[0].set_index('Date').Open
return s.rename(name)
@ -3529,7 +3529,7 @@ import <cython_script> # Script must be saved with '.pyx' extens
#### Definitions:
* **All `'cdef'` definitions are optional, but they contribute to the speed-up.**
* **Also supports C pointers via `'*'` and `'&'`, structs, unions, and enums.**
* **Also supports C pointers (via `'*'` and `'&'`), structs, unions and enums.**
```python
cdef <ctype/type> <var_name> [= <obj>]

18
index.html
View File

@ -56,7 +56,7 @@
<body>
<header>
<aside>February 28, 2025</aside>
<aside>March 2, 2025</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header>
@ -2313,11 +2313,11 @@ img.show()
<div><h3 id="imagedraw">Image Draw</h3><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> PIL <span class="hljs-keyword">import</span> ImageDraw
&lt;Draw&gt; = ImageDraw.Draw(&lt;Image&gt;) <span class="hljs-comment"># Object for adding 2D graphics to the image.</span>
&lt;Draw&gt;.point((x, y)) <span class="hljs-comment"># Draws a point. Truncates floats into ints.</span>
&lt;Draw&gt;.line((x1, y1, x2, y2 [, ...])) <span class="hljs-comment"># To get anti-aliasing use Image's resize().</span>
&lt;Draw&gt;.line((x1, y1, x2, y2 [, ...])) <span class="hljs-comment"># For anti-aliasing use &lt;Image&gt;.resize((w, h)).</span>
&lt;Draw&gt;.arc((x1, y1, x2, y2), deg1, deg2) <span class="hljs-comment"># Draws in clockwise dir. Also pieslice().</span>
&lt;Draw&gt;.rectangle((x1, y1, x2, y2)) <span class="hljs-comment"># Also rounded_rectangle(), regular_polygon().</span>
&lt;Draw&gt;.polygon((x1, y1, x2, y2, ...)) <span class="hljs-comment"># Last point gets connected to the first.</span>
&lt;Draw&gt;.ellipse((x1, y1, x2, y2)) <span class="hljs-comment"># To rotate use Image's rotate() and paste().</span>
&lt;Draw&gt;.polygon((x1, y1, x2, y2, ...)) <span class="hljs-comment"># Last point gets connected to the first one.</span>
&lt;Draw&gt;.ellipse((x1, y1, x2, y2)) <span class="hljs-comment"># To rotate use &lt;Image&gt;.rotate(anticlock_deg).</span>
&lt;Draw&gt;.text((x, y), &lt;str&gt;, font=&lt;Font&gt;) <span class="hljs-comment"># `&lt;Font&gt; = ImageFont.truetype(&lt;path&gt;, size)`.</span>
</code></pre></div>
@ -2816,7 +2816,7 @@ px.line(df, x=<span class="hljs-string">'Date'</span>, y=<span class="hljs-strin
<div><h4 id="displaysamultiaxislinechartoftotalcoronaviruscasesandchangesinpricesofbitcoindowjonesandgold">Displays a multi-axis line chart of total coronavirus cases and changes in prices of Bitcoin, Dow Jones and gold:</h4><p></p><div id="e23ccacc-a456-478b-b467-7282a2165921" class="plotly-graph-div" style="height:287px; width:935px;"></div><pre><code class="python language-python hljs"><span class="hljs-comment"># $ pip3 install pandas lxml selenium plotly</span>
<span class="hljs-keyword">import</span> pandas <span class="hljs-keyword">as</span> pd, selenium.webdriver, plotly.graph_objects <span class="hljs-keyword">as</span> go
<span class="hljs-keyword">import</span> pandas <span class="hljs-keyword">as</span> pd, selenium.webdriver, io, 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>
covid, (bitcoin, gold, dow) = get_covid_cases(), get_tickers()
@ -2825,7 +2825,7 @@ px.line(df, x=<span class="hljs-string">'Date'</span>, y=<span class="hljs-strin
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_covid_cases</span><span class="hljs-params">()</span>:</span>
url = <span class="hljs-string">'https://covid.ourworldindata.org/data/owid-covid-data.csv'</span>
df = pd.read_csv(url, usecols=[<span class="hljs-string">'location'</span>, <span class="hljs-string">'date'</span>, <span class="hljs-string">'total_cases'</span>], parse_dates=[<span class="hljs-string">'date'</span>])
df = pd.read_csv(url, parse_dates=[<span class="hljs-string">'date'</span>])
df = df[df.location == <span class="hljs-string">'World'</span>]
s = df.set_index(<span class="hljs-string">'date'</span>).total_cases
<span class="hljs-keyword">return</span> s.rename(<span class="hljs-string">'Total Cases'</span>)
@ -2841,7 +2841,7 @@ px.line(df, x=<span class="hljs-string">'Date'</span>, y=<span class="hljs-strin
driver.get(url + <span class="hljs-string">'?period1=1579651200&amp;period2=9999999999'</span>)
<span class="hljs-keyword">if</span> buttons := driver.find_elements(<span class="hljs-string">'xpath'</span>, <span class="hljs-string">'//button[@name="reject"]'</span>):
buttons[<span class="hljs-number">0</span>].click()
dataframes = pd.read_html(driver.page_source, parse_dates=[<span class="hljs-string">'Date'</span>])
dataframes = pd.read_html(io.StringIO(driver.page_source), parse_dates=[<span class="hljs-string">'Date'</span>])
s = dataframes[<span class="hljs-number">0</span>].set_index(<span class="hljs-string">'Date'</span>).Open
<span class="hljs-keyword">return</span> s.rename(name)
@ -2885,7 +2885,7 @@ px.line(df, x=<span class="hljs-string">'Date'</span>, y=<span class="hljs-strin
<div><h4 id="definitions">Definitions:</h4><ul>
<li><strong>All <code class="python hljs"><span class="hljs-string">'cdef'</span></code> definitions are optional, but they contribute to the speed-up.</strong></li>
<li><strong>Also supports C pointers via <code class="python hljs"><span class="hljs-string">'*'</span></code> and <code class="python hljs"><span class="hljs-string">'&amp;'</span></code>, structs, unions, and enums.</strong></li>
<li><strong>Also supports C pointers (via <code class="python hljs"><span class="hljs-string">'*'</span></code> and <code class="python hljs"><span class="hljs-string">'&amp;'</span></code>), structs, unions and enums.</strong></li>
</ul><pre><code class="python language-python hljs"><span class="hljs-keyword">cdef</span> &lt;ctype/type&gt; &lt;var_name&gt; [= &lt;obj&gt;]
<span class="hljs-keyword">cdef</span> &lt;ctype&gt;[n_elements] &lt;var_name&gt; [= &lt;coll_of_nums&gt;]
<span class="hljs-keyword">cdef</span> &lt;ctype/type/void&gt; &lt;func_name&gt;(&lt;ctype/type&gt; &lt;arg_name&gt;): ...
@ -2942,7 +2942,7 @@ $ deactivate <span class="hljs-comment"># Deactivates the active
<footer>
<aside>February 28, 2025</aside>
<aside>March 2, 2025</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer>

Write Preview
|||||||
100:0
Loading…
Cancel
Save