Arguments, Profile, Animation, Synthesizer

gto76 · gto76 · commit eca591425446 · 2021-03-05T13:22:13.000+01:00
diff --git a/README.md b/README.md
@@ -1496,8 +1496,8 @@ Command Line Arguments
 ----------------------
 ```python
 import sys
-script_name = sys.argv[0]
-arguments   = sys.argv[1:]
+scripts_path = sys.argv[0]
+arguments    = sys.argv[1:]
 ```
 
 ### Argument Parser
@@ -2541,7 +2541,7 @@ duration = perf_counter() - start_time
 ### Timing a Snippet
 ```python
 >>> from timeit import timeit
->>> timeit('"-".join(str(i) for i in range(100))',
+>>> timeit('"".join(str(i) for i in range(100))',
 ...        number=10000, globals=globals(), setup='pass')
 0.34986
 ```
@@ -2776,8 +2776,8 @@ from PIL import Image, ImageDraw
 import imageio
 WIDTH, R = 126, 10
 frames = []
-for velocity in range(15):
-    y = sum(range(velocity+1))
+for velocity in range(1, 16):
+    y = sum(range(velocity))
     frame = Image.new('L', (WIDTH, WIDTH))
     draw  = ImageDraw.Draw(frame)
     draw.ellipse((WIDTH/2-R, y, WIDTH/2+R, y+R*2), fill='white')
@@ -2901,13 +2901,13 @@ Synthesizer
 import simpleaudio, math, struct
 from itertools import chain, repeat
 F  = 44100
-P1 = '71♪,69,,71♪,66,,62♪,66,,59♪,,,'
-P2 = '71♪,73,,74♪,73,,74,,71,,73♪,71,,73,,69,,71♪,69,,71,,67,,71♪,,,'
+P1 = '71♩,69♪,,71♩,66♪,,62♩,66♪,,59♩,,,'
+P2 = '71♩,73♪,,74♩,73♪,,74♪,,71♪,,73♩,71♪,,73♪,,69♪,,71♩,69♪,,71♪,,67♪,,71♩,,,'
 get_pause   = lambda seconds: repeat(0, int(seconds * F))
 sin_f       = lambda i, hz: math.sin(i * 2 * math.pi * hz / F)
 get_wave    = lambda hz, seconds: (sin_f(i, hz) for i in range(int(seconds * F)))
 get_hz      = lambda key: 8.176 * 2 ** (int(key) / 12)
-parse_note  = lambda note: (get_hz(note[:2]), 0.25 if '♪' in note else 0.125)
+parse_note  = lambda note: (get_hz(note[:2]), 0.125 if '♪' in note else 0.25)
 get_samples = lambda note: get_wave(*parse_note(note)) if note else get_pause(0.125)
 samples_f   = chain.from_iterable(get_samples(n) for n in f'{P1}{P1}{P2}'.split(','))
 samples_b   = b''.join(struct.pack('<h', int(f * 30000)) for f in samples_f)
diff --git a/index.html b/index.html
@@ -1419,8 +1419,8 @@
 <li><strong>Raises EOFError when user hits EOF (ctrl-d/z) or input stream gets exhausted.</strong></li>
 </ul>
 <div><h2 id="commandlinearguments"><a href="#commandlinearguments" name="commandlinearguments">#</a>Command Line Arguments</h2><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> sys
-script_name = sys.argv[<span class="hljs-number">0</span>]
-arguments   = sys.argv[<span class="hljs-number">1</span>:]
+scripts_path = sys.argv[<span class="hljs-number">0</span>]
+arguments    = sys.argv[<span class="hljs-number">1</span>:]
 </code></pre></div>
 
 <div><h3 id="argumentparser">Argument Parser</h3><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> argparse <span class="hljs-keyword">import</span> ArgumentParser, FileType
@@ -2213,7 +2213,7 @@
 </code></pre></div>
 
 <div><h3 id="timingasnippet">Timing a Snippet</h3><pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> timeit <span class="hljs-keyword">import</span> timeit
-<span class="hljs-meta">&gt;&gt;&gt; </span>timeit(<span class="hljs-string">'"-".join(str(i) for i in range(100))'</span>,
+<span class="hljs-meta">&gt;&gt;&gt; </span>timeit(<span class="hljs-string">'"".join(str(i) for i in range(100))'</span>,
 <span class="hljs-meta">... </span>       number=<span class="hljs-number">10000</span>, globals=globals(), setup=<span class="hljs-string">'pass'</span>)
 <span class="hljs-number">0.34986</span>
 </code></pre></div>
@@ -2393,8 +2393,8 @@
 <span class="hljs-keyword">import</span> imageio
 WIDTH, R = <span class="hljs-number">126</span>, <span class="hljs-number">10</span>
 frames = []
-<span class="hljs-keyword">for</span> velocity <span class="hljs-keyword">in</span> range(<span class="hljs-number">15</span>):
-    y = sum(range(velocity+<span class="hljs-number">1</span>))
+<span class="hljs-keyword">for</span> velocity <span class="hljs-keyword">in</span> range(<span class="hljs-number">1</span>, <span class="hljs-number">16</span>):
+    y = sum(range(velocity))
     frame = Image.new(<span class="hljs-string">'L'</span>, (WIDTH, WIDTH))
     draw  = ImageDraw.Draw(frame)
     draw.ellipse((WIDTH/<span class="hljs-number">2</span>-R, y, WIDTH/<span class="hljs-number">2</span>+R, y+R*<span class="hljs-number">2</span>), fill=<span class="hljs-string">'white'</span>)
@@ -2494,13 +2494,13 @@
 <span class="hljs-keyword">import</span> simpleaudio, math, struct
 <span class="hljs-keyword">from</span> itertools <span class="hljs-keyword">import</span> chain, repeat
 F  = <span class="hljs-number">44100</span>
-P1 = <span class="hljs-string">'71♪,69,,71♪,66,,62♪,66,,59♪,,,'</span>
-P2 = <span class="hljs-string">'71♪,73,,74♪,73,,74,,71,,73♪,71,,73,,69,,71♪,69,,71,,67,,71♪,,,'</span>
+P1 = <span class="hljs-string">'71♩,69♪,,71♩,66♪,,62♩,66♪,,59♩,,,'</span>
+P2 = <span class="hljs-string">'71♩,73♪,,74♩,73♪,,74♪,,71♪,,73♩,71♪,,73♪,,69♪,,71♩,69♪,,71♪,,67♪,,71♩,,,'</span>
 get_pause   = <span class="hljs-keyword">lambda</span> seconds: repeat(<span class="hljs-number">0</span>, int(seconds * F))
 sin_f       = <span class="hljs-keyword">lambda</span> i, hz: math.sin(i * <span class="hljs-number">2</span> * math.pi * hz / F)
 get_wave    = <span class="hljs-keyword">lambda</span> hz, seconds: (sin_f(i, hz) <span class="hljs-keyword">for</span> i <span class="hljs-keyword">in</span> range(int(seconds * F)))
 get_hz      = <span class="hljs-keyword">lambda</span> key: <span class="hljs-number">8.176</span> * <span class="hljs-number">2</span> ** (int(key) / <span class="hljs-number">12</span>)
-parse_note  = <span class="hljs-keyword">lambda</span> note: (get_hz(note[:<span class="hljs-number">2</span>]), <span class="hljs-number">0.25</span> <span class="hljs-keyword">if</span> <span class="hljs-string">'♪'</span> <span class="hljs-keyword">in</span> note <span class="hljs-keyword">else</span> <span class="hljs-number">0.125</span>)
+parse_note  = <span class="hljs-keyword">lambda</span> note: (get_hz(note[:<span class="hljs-number">2</span>]), <span class="hljs-number">0.125</span> <span class="hljs-keyword">if</span> <span class="hljs-string">'♪'</span> <span class="hljs-keyword">in</span> note <span class="hljs-keyword">else</span> <span class="hljs-number">0.25</span>)
 get_samples = <span class="hljs-keyword">lambda</span> note: get_wave(*parse_note(note)) <span class="hljs-keyword">if</span> note <span class="hljs-keyword">else</span> get_pause(<span class="hljs-number">0.125</span>)
 samples_f   = chain.from_iterable(get_samples(n) <span class="hljs-keyword">for</span> n <span class="hljs-keyword">in</span> <span class="hljs-string">f'<span class="hljs-subst">{P1}</span><span class="hljs-subst">{P1}</span><span class="hljs-subst">{P2}</span>'</span>.split(<span class="hljs-string">','</span>))
 samples_b   = <span class="hljs-string">b''</span>.join(struct.pack(<span class="hljs-string">'&lt;h'</span>, int(f * <span class="hljs-number">30000</span>)) <span class="hljs-keyword">for</span> f <span class="hljs-keyword">in</span> samples_f)
