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python-cheatsheet
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Jure Šorn 4 years ago
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2 changed files with 21 additions and 17 deletions
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  1. 21
      README.md
  2. 17
      index.html

21
README.md
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@ -1505,7 +1505,7 @@ Open
```python
<file> = open('<path>', mode='r', encoding=None, newline=None)
```
* **`'encoding=None'` means default encoding is used, which is platform dependent. Best practice is to use `'encoding="utf-8"'` whenever possible.**
* **`'encoding=None'` means that the default encoding is used, which is platform dependent. Best practice is to use `'encoding="utf-8"'` whenever possible.**
* **`'newline=None'` means all different end of line combinations are converted to '\n' on read, while on write all '\n' characters are converted to system's default line separator.**
* **`'newline=""'` means no conversions take place, but input is still broken into chunks by readline() and readlines() on either '\n', '\r' or '\r\n'.**
@ -1543,7 +1543,7 @@ Open
```python
<file>.write(<str/bytes>) # Writes a string or bytes object.
<file>.writelines(<coll.>) # Writes a coll. of strings or bytes objects.
<file>.writelines(<collection>) # Writes a coll. of strings or bytes objects.
<file>.flush() # Flushes write buffer.
```
* **Methods do not add or strip trailing newlines, even writelines().**
@ -1566,10 +1566,14 @@ def write_to_file(filename, text):
Path
----
```python
from os import path, listdir
from os import getcwd, path, listdir
from glob import glob
```
```python
<str> = getcwd() # Returns the current working directory.
```
```python
<bool> = path.exists('<path>')
<bool> = path.isfile('<path>')
@ -1633,6 +1637,11 @@ os.chdir(<path>) # Changes current working directory.
os.mkdir(<path>, mode=0o777) # Creates a directory.
```
```python
shutil.copy(from, to) # Copies the file.
shutil.copytree(from, to) # Copies the entire directory tree.
```
```python
os.rename(from, to) # Renames the file or directory.
os.replace(from, to) # Same, but overwrites 'to' if it exists.
@ -1645,12 +1654,6 @@ shutil.rmtree(<path>) # Deletes the entire directory tree.
```
```python
shutil.copy(from, to) # Copies the file.
shutil.copytree(from, to) # Copies the entire directory tree.
```
```python
<str> = os.getcwd() # Returns the current working directory.
<iter> = os.scandir(path='.') # Returns os.DirEntry objects located at path.
```

17
index.html
View File

@ -1395,7 +1395,7 @@ value = args.&lt;name&gt;
<ul>
<li><strong><code class="python hljs"><span class="hljs-string">'encoding=None'</span></code> means default encoding is used, which is platform dependent. Best practice is to use <code class="python hljs"><span class="hljs-string">'encoding="utf-8"'</span></code> whenever possible.</strong></li>
<li><strong><code class="python hljs"><span class="hljs-string">'encoding=None'</span></code> means that the default encoding is used, which is platform dependent. Best practice is to use <code class="python hljs"><span class="hljs-string">'encoding="utf-8"'</span></code> whenever possible.</strong></li>
<li><strong><code class="python hljs"><span class="hljs-string">'newline=None'</span></code> means all different end of line combinations are converted to '\n' on read, while on write all '\n' characters are converted to system's default line separator.</strong></li>
<li><strong><code class="python hljs"><span class="hljs-string">'newline=""'</span></code> means no conversions take place, but input is still broken into chunks by readline() and readlines() on either '\n', '\r' or '\r\n'.</strong></li>
</ul>
@ -1430,7 +1430,7 @@ value = args.&lt;name&gt;
&lt;str/bytes&gt; = next(&lt;file&gt;) <span class="hljs-comment"># Returns a line using buffer. Do not mix.</span>
</code></pre>
<pre><code class="python language-python hljs">&lt;file&gt;.write(&lt;str/bytes&gt;) <span class="hljs-comment"># Writes a string or bytes object.</span>
&lt;file&gt;.writelines(&lt;coll.&gt;) <span class="hljs-comment"># Writes a coll. of strings or bytes objects.</span>
&lt;file&gt;.writelines(&lt;collection&gt;) <span class="hljs-comment"># Writes a coll. of strings or bytes objects.</span>
&lt;file&gt;.flush() <span class="hljs-comment"># Flushes write buffer.</span>
</code></pre>
<ul>
@ -1446,10 +1446,12 @@ value = args.&lt;name&gt;
file.write(text)
</code></pre></div>
<div><h2 id="path"><a href="#path" name="path">#</a>Path</h2><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> os <span class="hljs-keyword">import</span> path, listdir
<div><h2 id="path"><a href="#path" name="path">#</a>Path</h2><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> os <span class="hljs-keyword">import</span> getcwd, path, listdir
<span class="hljs-keyword">from</span> glob <span class="hljs-keyword">import</span> glob
</code></pre></div>
<pre><code class="python language-python hljs">&lt;str&gt; = getcwd() <span class="hljs-comment"># Returns the current working directory.</span>
</code></pre>
<pre><code class="python language-python hljs">&lt;bool&gt; = path.exists(<span class="hljs-string">'&lt;path&gt;'</span>)
&lt;bool&gt; = path.isfile(<span class="hljs-string">'&lt;path&gt;'</span>)
&lt;bool&gt; = path.isdir(<span class="hljs-string">'&lt;path&gt;'</span>)
@ -1492,6 +1494,9 @@ value = args.&lt;name&gt;
<pre><code class="python language-python hljs">os.chdir(&lt;path&gt;) <span class="hljs-comment"># Changes current working directory.</span>
os.mkdir(&lt;path&gt;, mode=<span class="hljs-number">0o777</span>) <span class="hljs-comment"># Creates a directory.</span>
</code></pre>
<pre><code class="python language-python hljs">shutil.copy(from, to) <span class="hljs-comment"># Copies the file.</span>
shutil.copytree(from, to) <span class="hljs-comment"># Copies the entire directory tree.</span>
</code></pre>
<pre><code class="python language-python hljs">os.rename(from, to) <span class="hljs-comment"># Renames the file or directory.</span>
os.replace(from, to) <span class="hljs-comment"># Same, but overwrites 'to' if it exists.</span>
</code></pre>
@ -1499,11 +1504,7 @@ os.replace(from, to) <span class="hljs-comment"># Same, but overw
os.rmdir(&lt;path&gt;) <span class="hljs-comment"># Deletes empty directory.</span>
shutil.rmtree(&lt;path&gt;) <span class="hljs-comment"># Deletes the entire directory tree.</span>
</code></pre>
<pre><code class="python language-python hljs">shutil.copy(from, to) <span class="hljs-comment"># Copies the file.</span>
shutil.copytree(from, to) <span class="hljs-comment"># Copies the entire directory tree.</span>
</code></pre>
<pre><code class="python language-python hljs">&lt;str&gt; = os.getcwd() <span class="hljs-comment"># Returns the current working directory.</span>
&lt;iter&gt; = os.scandir(path=<span class="hljs-string">'.'</span>) <span class="hljs-comment"># Returns os.DirEntry objects located at path.</span>
<pre><code class="python language-python hljs">&lt;iter&gt; = os.scandir(path=<span class="hljs-string">'.'</span>) <span class="hljs-comment"># Returns os.DirEntry objects located at path.</span>
</code></pre>
<div><h4 id="direntry">DirEntry:</h4><pre><code class="python language-python hljs">&lt;bool&gt; = &lt;DirEntry&gt;.is_file()
&lt;bool&gt; = &lt;DirEntry&gt;.is_dir()

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