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

Coroutines

pull/135/head
Jure Šorn 2 years ago
parent
694726a48c
commit
23b7fd7919
3 changed files with 19 additions and 16 deletions
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 11
      README.md
  2. 15
      index.html
  3. 9
      parse.js

11
README.md
View File

@ -2302,7 +2302,7 @@ Coroutines
* **Coroutines have a lot in common with threads, but unlike threads, they only give up control when they call another coroutine and they don’t use as much memory.** * **Coroutines have a lot in common with threads, but unlike threads, they only give up control when they call another coroutine and they don’t use as much memory.**
* **Coroutine definition starts with `'async'` and its call with `'await'`.** * **Coroutine definition starts with `'async'` and its call with `'await'`.**
* **`'asyncio.run(<coroutine>)'` is the main entry point for asynchronous programs.** * **`'asyncio.run(<coroutine>)'` is the main entry point for asynchronous programs.**
* **Functions wait(), gather() and as_completed() can be used when multiple coroutines need to be started at the same time.**
* **Functions wait(), gather() and as_completed() start multiple coroutines at the same time.**
* **Asyncio module also provides its own [Queue](#queue), [Event](#semaphore-event-barrier), [Lock](#lock) and [Semaphore](#semaphore-event-barrier) classes.** * **Asyncio module also provides its own [Queue](#queue), [Event](#semaphore-event-barrier), [Lock](#lock) and [Semaphore](#semaphore-event-barrier) classes.**
#### Runs a terminal game where you control an asterisk that must avoid numbers: #### Runs a terminal game where you control an asterisk that must avoid numbers:
@ -2320,11 +2320,12 @@ def main(screen):
asyncio.run(main_coroutine(screen)) # Starts running asyncio code. asyncio.run(main_coroutine(screen)) # Starts running asyncio code.
async def main_coroutine(screen): async def main_coroutine(screen):
state = {'*': P(0, 0), **{id_: P(W//2, H//2) for id_ in range(10)}}
moves = asyncio.Queue() moves = asyncio.Queue()
coros = (*(random_controller(id_, moves) for id_ in range(10)),
human_controller(screen, moves), model(moves, state), view(state, screen))
await asyncio.wait(coros, return_when=asyncio.FIRST_COMPLETED)
state = {'*': P(0, 0), **{id_: P(W//2, H//2) for id_ in range(10)}}
ai = [random_controller(id_, moves) for id_ in range(10)]
mvc = [human_controller(screen, moves), model(moves, state), view(state, screen)]
tasks = [asyncio.create_task(cor) for cor in ai + mvc]
await asyncio.wait(tasks, return_when=asyncio.FIRST_COMPLETED)
async def random_controller(id_, moves): async def random_controller(id_, moves):
while True: while True:

15
index.html
View File

@ -54,7 +54,7 @@
<body> <body>
<header> <header>
<aside>September 12, 2022</aside>
<aside>September 16, 2022</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a> <a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header> </header>
@ -1889,7 +1889,7 @@ ValueError: malformed node or string
<li><strong>Coroutines have a lot in common with threads, but unlike threads, they only give up control when they call another coroutine and they don’t use as much memory.</strong></li> <li><strong>Coroutines have a lot in common with threads, but unlike threads, they only give up control when they call another coroutine and they don’t use as much memory.</strong></li>
<li><strong>Coroutine definition starts with <code class="python hljs"><span class="hljs-string">'async'</span></code> and its call with <code class="python hljs"><span class="hljs-string">'await'</span></code>.</strong></li> <li><strong>Coroutine definition starts with <code class="python hljs"><span class="hljs-string">'async'</span></code> and its call with <code class="python hljs"><span class="hljs-string">'await'</span></code>.</strong></li>
<li><strong><code class="python hljs"><span class="hljs-string">'asyncio.run(&lt;coroutine&gt;)'</span></code> is the main entry point for asynchronous programs.</strong></li> <li><strong><code class="python hljs"><span class="hljs-string">'asyncio.run(&lt;coroutine&gt;)'</span></code> is the main entry point for asynchronous programs.</strong></li>
<li><strong>Functions wait(), gather() and as_completed() can be used when multiple coroutines need to be started at the same time.</strong></li>
<li><strong>Functions wait(), gather() and as_completed() start multiple coroutines at the same time.</strong></li>
<li><strong>Asyncio module also provides its own <a href="#queue">Queue</a>, <a href="#semaphoreeventbarrier">Event</a>, <a href="#lock">Lock</a> and <a href="#semaphoreeventbarrier">Semaphore</a> classes.</strong></li> <li><strong>Asyncio module also provides its own <a href="#queue">Queue</a>, <a href="#semaphoreeventbarrier">Event</a>, <a href="#lock">Lock</a> and <a href="#semaphoreeventbarrier">Semaphore</a> classes.</strong></li>
</ul><div><h4 id="runsaterminalgamewhereyoucontrolanasteriskthatmustavoidnumbers">Runs a terminal game where you control an asterisk that must avoid numbers:</h4><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> asyncio, collections, curses, curses.textpad, enum, random </ul><div><h4 id="runsaterminalgamewhereyoucontrolanasteriskthatmustavoidnumbers">Runs a terminal game where you control an asterisk that must avoid numbers:</h4><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> asyncio, collections, curses, curses.textpad, enum, random
@ -1903,11 +1903,12 @@ W, H = <span class="hljs-number">15</span>, <span class="hljs-number">7</span>
asyncio.run(main_coroutine(screen)) <span class="hljs-comment"># Starts running asyncio code.</span> asyncio.run(main_coroutine(screen)) <span class="hljs-comment"># Starts running asyncio code.</span>
<span class="hljs-keyword">async</span> <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">main_coroutine</span><span class="hljs-params">(screen)</span>:</span> <span class="hljs-keyword">async</span> <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">main_coroutine</span><span class="hljs-params">(screen)</span>:</span>
state = {<span class="hljs-string">'*'</span>: P(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>), **{id_: P(W//<span class="hljs-number">2</span>, H//<span class="hljs-number">2</span>) <span class="hljs-keyword">for</span> id_ <span class="hljs-keyword">in</span> range(<span class="hljs-number">10</span>)}}
moves = asyncio.Queue() moves = asyncio.Queue()
coros = (*(random_controller(id_, moves) <span class="hljs-keyword">for</span> id_ <span class="hljs-keyword">in</span> range(<span class="hljs-number">10</span>)),
human_controller(screen, moves), model(moves, state), view(state, screen))
<span class="hljs-keyword">await</span> asyncio.wait(coros, return_when=asyncio.FIRST_COMPLETED)
state = {<span class="hljs-string">'*'</span>: P(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>), **{id_: P(W//<span class="hljs-number">2</span>, H//<span class="hljs-number">2</span>) <span class="hljs-keyword">for</span> id_ <span class="hljs-keyword">in</span> range(<span class="hljs-number">10</span>)}}
ai = [random_controller(id_, moves) <span class="hljs-keyword">for</span> id_ <span class="hljs-keyword">in</span> range(<span class="hljs-number">10</span>)]
mvc = [human_controller(screen, moves), model(moves, state), view(state, screen)]
tasks = [asyncio.create_task(cor) <span class="hljs-keyword">for</span> cor <span class="hljs-keyword">in</span> ai + mvc]
<span class="hljs-keyword">await</span> asyncio.wait(tasks, return_when=asyncio.FIRST_COMPLETED)
<span class="hljs-keyword">async</span> <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">random_controller</span><span class="hljs-params">(id_, moves)</span>:</span> <span class="hljs-keyword">async</span> <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">random_controller</span><span class="hljs-params">(id_, moves)</span>:</span>
<span class="hljs-keyword">while</span> <span class="hljs-keyword">True</span>: <span class="hljs-keyword">while</span> <span class="hljs-keyword">True</span>:
@ -2905,7 +2906,7 @@ $ pyinstaller script.py --add-data '&lt;path&gt;:.' <span class="hljs-comment">
<footer> <footer>
<aside>September 12, 2022</aside>
<aside>September 16, 2022</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a> <a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer> </footer>

9
parse.js
View File

@ -119,11 +119,12 @@ const COROUTINES =
' asyncio.run(main_coroutine(screen)) <span class="hljs-comment"># Starts running asyncio code.</span>\n' + ' asyncio.run(main_coroutine(screen)) <span class="hljs-comment"># Starts running asyncio code.</span>\n' +
'\n' + '\n' +
'<span class="hljs-keyword">async</span> <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">main_coroutine</span><span class="hljs-params">(screen)</span>:</span>\n' + '<span class="hljs-keyword">async</span> <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">main_coroutine</span><span class="hljs-params">(screen)</span>:</span>\n' +
' state = {<span class="hljs-string">\'*\'</span>: P(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>), **{id_: P(W//<span class="hljs-number">2</span>, H//<span class="hljs-number">2</span>) <span class="hljs-keyword">for</span> id_ <span class="hljs-keyword">in</span> range(<span class="hljs-number">10</span>)}}\n' +
' moves = asyncio.Queue()\n' + ' moves = asyncio.Queue()\n' +
' coros = (*(random_controller(id_, moves) <span class="hljs-keyword">for</span> id_ <span class="hljs-keyword">in</span> range(<span class="hljs-number">10</span>)),\n' +
' human_controller(screen, moves), model(moves, state), view(state, screen))\n' +
' <span class="hljs-keyword">await</span> asyncio.wait(coros, return_when=asyncio.FIRST_COMPLETED)\n' +
' state = {<span class="hljs-string">\'*\'</span>: P(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>), **{id_: P(W//<span class="hljs-number">2</span>, H//<span class="hljs-number">2</span>) <span class="hljs-keyword">for</span> id_ <span class="hljs-keyword">in</span> range(<span class="hljs-number">10</span>)}}\n' +
' ai = [random_controller(id_, moves) <span class="hljs-keyword">for</span> id_ <span class="hljs-keyword">in</span> range(<span class="hljs-number">10</span>)]\n' +
' mvc = [human_controller(screen, moves), model(moves, state), view(state, screen)]\n' +
' tasks = [asyncio.create_task(cor) <span class="hljs-keyword">for</span> cor <span class="hljs-keyword">in</span> ai + mvc]\n' +
' <span class="hljs-keyword">await</span> asyncio.wait(tasks, return_when=asyncio.FIRST_COMPLETED)\n' +
'\n' + '\n' +
'<span class="hljs-keyword">async</span> <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">random_controller</span><span class="hljs-params">(id_, moves)</span>:</span>\n' + '<span class="hljs-keyword">async</span> <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">random_controller</span><span class="hljs-params">(id_, moves)</span>:</span>\n' +
' <span class="hljs-keyword">while</span> <span class="hljs-keyword">True</span>:\n' + ' <span class="hljs-keyword">while</span> <span class="hljs-keyword">True</span>:\n' +

Write Preview
Loading…
Cancel
Save