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Command line arguments, OS Commands

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Jure Šorn 2 years ago
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  1. 8
      README.md
  2. 19
      index.html

8
README.md
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@ -1546,7 +1546,7 @@ value = args.<name>
* **Use `'help=<str>'` to set argument description that will be displayed in help message.**
* **Use `'default=<el>'` to set the default value.**
* **Use `'type=FileType(<mode>)'` for files. Accepts 'encoding', but 'newline' is always None.**
* **Use `'type=FileType(<mode>)'` for files. Accepts 'encoding', but not 'newline'.**
Open
@ -1701,10 +1701,6 @@ OS Commands
import os, shutil, subprocess
```
### Files and Directories
* **Paths can be either strings, Paths or DirEntry objects.**
* **Functions report OS related errors by raising either OSError or one of its [subclasses](#exceptions-1).**
```python
os.chdir(<path>) # Changes the current working directory.
os.mkdir(<path>, mode=0o777) # Creates a directory. Mode is in octal.
@ -1726,6 +1722,8 @@ os.remove(<path>) # Deletes the file.
os.rmdir(<path>) # Deletes the empty directory.
shutil.rmtree(<path>) # Deletes the directory.
```
* **Paths can be either strings, Paths or DirEntry objects.**
* **Functions report OS related errors by raising either OSError or one of its [subclasses](#exceptions-1).**
### Shell Commands
```python

19
index.html
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@ -54,7 +54,7 @@
<body>
<header>
<aside>June 14, 2022</aside>
<aside>June 15, 2022</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header>
@ -1322,7 +1322,7 @@ value = args.&lt;name&gt;
<ul>
<li><strong>Use <code class="python hljs"><span class="hljs-string">'help=&lt;str&gt;'</span></code> to set argument description that will be displayed in help message.</strong></li>
<li><strong>Use <code class="python hljs"><span class="hljs-string">'default=&lt;el&gt;'</span></code> to set the default value.</strong></li>
<li><strong>Use <code class="python hljs"><span class="hljs-string">'type=FileType(&lt;mode&gt;)'</span></code> for files. Accepts 'encoding', but 'newline' is always None.</strong></li>
<li><strong>Use <code class="python hljs"><span class="hljs-string">'type=FileType(&lt;mode&gt;)'</span></code> for files. Accepts 'encoding', but not 'newline'.</strong></li>
</ul>
<div><h2 id="open"><a href="#open" name="open">#</a>Open</h2><p><strong>Opens the file and returns a corresponding file object.</strong></p><pre><code class="python language-python hljs">&lt;file&gt; = open(&lt;path&gt;, mode=<span class="hljs-string">'r'</span>, encoding=<span class="hljs-keyword">None</span>, newline=<span class="hljs-keyword">None</span>)
</code></pre></div>
@ -1435,15 +1435,10 @@ value = args.&lt;name&gt;
<div><h2 id="oscommands"><a href="#oscommands" name="oscommands">#</a>OS Commands</h2><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> os, shutil, subprocess
</code></pre></div>
<div><h3 id="filesanddirectories">Files and Directories</h3><ul>
<li><strong>Paths can be either strings, Paths or DirEntry objects.</strong></li>
<li><strong>Functions report OS related errors by raising either OSError or one of its <a href="#exceptions-1">subclasses</a>.</strong></li>
</ul><pre><code class="python language-python hljs">os.chdir(&lt;path&gt;) <span class="hljs-comment"># Changes the current working directory.</span>
<pre><code class="python language-python hljs">os.chdir(&lt;path&gt;) <span class="hljs-comment"># Changes the current working directory.</span>
os.mkdir(&lt;path&gt;, mode=<span class="hljs-number">0o777</span>) <span class="hljs-comment"># Creates a directory. Mode is in octal.</span>
os.makedirs(&lt;path&gt;, mode=<span class="hljs-number">0o777</span>) <span class="hljs-comment"># Creates all path's dirs. Also: `exist_ok=False`.</span>
</code></pre></div>
</code></pre>
<pre><code class="python language-python hljs">shutil.copy(from, to) <span class="hljs-comment"># Copies the file. 'to' can exist or be a dir.</span>
shutil.copytree(from, to) <span class="hljs-comment"># Copies the directory. 'to' must not exist.</span>
</code></pre>
@ -1454,6 +1449,10 @@ os.replace(from, to) <span class="hljs-comment"># Same, but overwrit
os.rmdir(&lt;path&gt;) <span class="hljs-comment"># Deletes the empty directory.</span>
shutil.rmtree(&lt;path&gt;) <span class="hljs-comment"># Deletes the directory.</span>
</code></pre>
<ul>
<li><strong>Paths can be either strings, Paths or DirEntry objects.</strong></li>
<li><strong>Functions report OS related errors by raising either OSError or one of its <a href="#exceptions-1">subclasses</a>.</strong></li>
</ul>
<div><h3 id="shellcommands">Shell Commands</h3><pre><code class="python language-python hljs">&lt;pipe&gt; = os.popen(<span class="hljs-string">'&lt;command&gt;'</span>) <span class="hljs-comment"># Executes command in sh/cmd and returns its stdout pipe.</span>
&lt;str&gt; = &lt;pipe&gt;.read(size=<span class="hljs-number">-1</span>) <span class="hljs-comment"># Reads 'size' chars or until EOF. Also readline/s().</span>
&lt;int&gt; = &lt;pipe&gt;.close() <span class="hljs-comment"># Closes the pipe. Returns None on success, int on error.</span>
@ -2903,7 +2902,7 @@ $ pyinstaller script.py --add-data '&lt;path&gt;:.' <span class="hljs-comment">
<footer>
<aside>June 14, 2022</aside>
<aside>June 15, 2022</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer>

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