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Tuple, Curses, Appendix
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‎README.md

Lines changed: 23 additions & 23 deletions
Original file line numberDiff line numberDiff line change
@@ -144,8 +144,8 @@ Tuple
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**Tuple is an immutable and hashable list.**
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```python
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<tuple> = ()
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<tuple> = (<el>,)
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<tuple> = (<el_1>, <el_2> [, ...])
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<tuple> = (<el>,) # Or: <el>,
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<tuple> = (<el_1>, <el_2> [, ...]) # Or: <el_1>, <el_2> [, ...]
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```
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### Named Tuple
@@ -2370,30 +2370,30 @@ with open('test.csv', encoding='utf-8', newline='') as file:
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Curses
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------
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#### Clears the terminal, prints a message and waits for the ESC key press:
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#### Runs a basic file explorer in the terminal:
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```python
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from curses import wrapper, curs_set, ascii
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from curses import KEY_UP, KEY_RIGHT, KEY_DOWN, KEY_LEFT
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from curses import wrapper, ascii, A_REVERSE, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_ENTER
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from os import listdir, chdir, path
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def main():
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wrapper(draw)
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def draw(screen):
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curs_set(0) # Makes cursor invisible.
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screen.nodelay(True) # Makes getch() non-blocking.
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screen.clear()
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screen.addstr(0, 0, 'Press ESC to quit.') # Coordinates are y, x.
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while screen.getch() != ascii.ESC:
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pass
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def get_border(screen):
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from collections import namedtuple
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P = namedtuple('P', 'x y')
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height, width = screen.getmaxyx()
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return P(width-1, height-1)
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def main(screen):
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ch, first, selected, paths = 0, 0, 0, listdir()
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while ch != ascii.ESC:
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height, _ = screen.getmaxyx()
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screen.clear()
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for y, path_ in enumerate(paths[first : first+height]):
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screen.addstr(y, 0, path_, A_REVERSE * (selected == first + y))
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ch = screen.getch()
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selected += (ch == KEY_DOWN) - (ch == KEY_UP)
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selected = max(0, min(len(paths)-1, selected))
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first += (first <= selected - height) - (first > selected)
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if ch in [KEY_LEFT, KEY_RIGHT, KEY_ENTER, 10, 13]:
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new_dir = '..' if ch == KEY_LEFT else paths[selected]
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if path.isdir(new_dir):
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chdir(new_dir)
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first, selected, paths = 0, 0, listdir()
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if __name__ == '__main__':
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main()
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wrapper(main)
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```
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@@ -3489,7 +3489,7 @@ from sys import argv, exit
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from collections import defaultdict, namedtuple
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from dataclasses import make_dataclass
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from enum import Enum
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import re, operator as op, itertools as it, functools as ft
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import functools as ft, itertools as it, operator as op, re
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def main():

‎index.html

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@@ -335,8 +335,8 @@
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<div><h2 id="tuple"><a href="#tuple" name="tuple">#</a>Tuple</h2><p><strong>Tuple is an immutable and hashable list.</strong></p><pre><code class="python language-python hljs">&lt;tuple&gt; = ()
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&lt;tuple&gt; = (&lt;el&gt;,)
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&lt;tuple&gt; = (&lt;el_1&gt;, &lt;el_2&gt; [, ...])
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&lt;tuple&gt; = (&lt;el&gt;,) <span class="hljs-comment"># Or: &lt;el&gt;,</span>
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&lt;tuple&gt; = (&lt;el_1&gt;, &lt;el_2&gt; [, ...]) <span class="hljs-comment"># Or: &lt;el_1&gt;, &lt;el_2&gt; [, ...]</span>
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</code></pre></div>
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@@ -2078,28 +2078,28 @@
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</code></pre></div></div>
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<div><h2 id="curses"><a href="#curses" name="curses">#</a>Curses</h2><div><h4 id="clearstheterminalprintsamessageandwaitsfortheesckeypress">Clears the terminal, prints a message and waits for the ESC key press:</h4><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> curses <span class="hljs-keyword">import</span> wrapper, curs_set, ascii
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<span class="hljs-keyword">from</span> curses <span class="hljs-keyword">import</span> KEY_UP, KEY_RIGHT, KEY_DOWN, KEY_LEFT
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<div><h2 id="curses"><a href="#curses" name="curses">#</a>Curses</h2><div><h4 id="runsabasicfileexplorerintheterminal">Runs a basic file explorer in the terminal:</h4><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> curses <span class="hljs-keyword">import</span> wrapper, ascii, A_REVERSE, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_ENTER
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<span class="hljs-keyword">from</span> os <span class="hljs-keyword">import</span> listdir, chdir, path
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<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">main</span><span class="hljs-params">()</span>:</span>
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wrapper(draw)
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<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">draw</span><span class="hljs-params">(screen)</span>:</span>
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curs_set(<span class="hljs-number">0</span>) <span class="hljs-comment"># Makes cursor invisible.</span>
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screen.nodelay(<span class="hljs-keyword">True</span>) <span class="hljs-comment"># Makes getch() non-blocking.</span>
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screen.clear()
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screen.addstr(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>, <span class="hljs-string">'Press ESC to quit.'</span>) <span class="hljs-comment"># Coordinates are y, x.</span>
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<span class="hljs-keyword">while</span> screen.getch() != ascii.ESC:
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<span class="hljs-keyword">pass</span>
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<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_border</span><span class="hljs-params">(screen)</span>:</span>
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<span class="hljs-keyword">from</span> collections <span class="hljs-keyword">import</span> namedtuple
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P = namedtuple(<span class="hljs-string">'P'</span>, <span class="hljs-string">'x y'</span>)
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height, width = screen.getmaxyx()
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<span class="hljs-keyword">return</span> P(width<span class="hljs-number">-1</span>, height<span class="hljs-number">-1</span>)
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<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">main</span><span class="hljs-params">(screen)</span>:</span>
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ch, first, selected, paths = <span class="hljs-number">0</span>, <span class="hljs-number">0</span>, <span class="hljs-number">0</span>, listdir()
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<span class="hljs-keyword">while</span> ch != ascii.ESC:
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height, _ = screen.getmaxyx()
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screen.clear()
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<span class="hljs-keyword">for</span> y, path_ <span class="hljs-keyword">in</span> enumerate(paths[first : first+height]):
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screen.addstr(y, <span class="hljs-number">0</span>, path_, A_REVERSE * (selected == first + y))
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ch = screen.getch()
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selected += (ch == KEY_DOWN) - (ch == KEY_UP)
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selected = max(<span class="hljs-number">0</span>, min(len(paths)<span class="hljs-number">-1</span>, selected))
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first += (first &lt;= selected - height) - (first &gt; selected)
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<span class="hljs-keyword">if</span> ch <span class="hljs-keyword">in</span> [KEY_LEFT, KEY_RIGHT, KEY_ENTER, <span class="hljs-number">10</span>, <span class="hljs-number">13</span>]:
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new_dir = <span class="hljs-string">'..'</span> <span class="hljs-keyword">if</span> ch == KEY_LEFT <span class="hljs-keyword">else</span> paths[selected]
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<span class="hljs-keyword">if</span> path.isdir(new_dir):
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chdir(new_dir)
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first, selected, paths = <span class="hljs-number">0</span>, <span class="hljs-number">0</span>, listdir()
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<span class="hljs-keyword">if</span> __name__ == <span class="hljs-string">'__main__'</span>:
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main()
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wrapper(main)
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</code></pre></div></div>
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<span class="hljs-keyword">from</span> collections <span class="hljs-keyword">import</span> defaultdict, namedtuple
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<span class="hljs-keyword">from</span> dataclasses <span class="hljs-keyword">import</span> make_dataclass
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<span class="hljs-keyword">from</span> enum <span class="hljs-keyword">import</span> Enum
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<span class="hljs-keyword">import</span> re, operator <span class="hljs-keyword">as</span> op, itertools <span class="hljs-keyword">as</span> it, functools <span class="hljs-keyword">as</span> ft
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<span class="hljs-keyword">import</span> functools <span class="hljs-keyword">as</span> ft, itertools <span class="hljs-keyword">as</span> it, operator <span class="hljs-keyword">as</span> op, re
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<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">main</span><span class="hljs-params">()</span>:</span>

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