https://lannert.de/debloss/enContents © 2025 <a href="mailto:lannert@hhu.de">Detlef Lannert</a> <a rel="license" href="https://creativecommons.org/licenses/by-nc-sa/4.0/"> <img alt="Creative Commons License BY-NC-SA" style="border-width:0; margin-bottom:12px;" src="https://i.creativecommons.org/l/by-nc-sa/4.0/88x31.png"></a>Tue, 16 Sep 2025 20:43:27 GMTNikola (getnikola.com)http://blogs.law.harvard.edu/tech/rsshttps://lannert.de/debloss/en/posts/ein-beispiel-fur-dataclasses/Detlef Lannert<div class="cell border-box-sizing code_cell rendered"> <div class="input"> <div class="prompt input_prompt">In [8]:</div> <div class="inner_cell"> <div class="input_area"> <div class="highlight hl-ipython3"><pre><span></span><span class="kn">from</span><span class="w"> </span><span class="nn">dataclasses</span><span class="w"> </span><span class="kn">import</span> <span class="n">dataclass</span> </pre></div> </div> </div> </div> </div> <div class="cell border-box-sizing text_cell rendered"><div class="prompt input_prompt"> </div><div class="inner_cell"> <div class="text_cell_render border-box-sizing rendered_html"> <p>Jetzt haben wir einen Decorator, mit dem wir eine Dataclass anlegen können:</p> </div> </div> </div> <div class="cell border-box-sizing code_cell rendered"> <div class="input"> <div class="prompt input_prompt">In [9]:</div> <div class="inner_cell"> <div class="input_area"> <div class="highlight hl-ipython3"><pre><span></span><span class="nd">@dataclass</span> <span class="k">class</span><span class="w"> </span><span class="nc">RetCode</span><span class="p">:</span> <span class="n">ok</span><span class="p">:</span> <span class="nb">bool</span> <span class="n">message</span><span class="p">:</span> <span class="nb">str</span> </pre></div> </div> </div> </div> </div> <div class="cell border-box-sizing code_cell rendered"> <div class="input"> <div class="prompt input_prompt">In [10]:</div> <div class="inner_cell"> <div class="input_area"> <div class="highlight hl-ipython3"><pre><span></span><span class="n">rc</span> <span class="o">=</span> <span class="n">RetCode</span><span class="p">(</span><span class="kc">True</span><span class="p">,</span> <span class="s2">""</span><span class="p">)</span> </pre></div> </div> </div> </div> </div> <div class="cell border-box-sizing code_cell rendered"> <div class="input"> <div class="prompt input_prompt">In [11]:</div> <div class="inner_cell"> <div class="input_area"> <div class="highlight hl-ipython3"><pre><span></span><span class="n">rc</span><span class="o">.</span><span class="n">ok</span> </pre></div> </div> </div> </div> <div class="output_wrapper"> <div class="output"> <div class="output_area"> <div class="prompt output_prompt">Out[11]:</div> <div class="output_text output_subarea output_execute_result"> <pre>True</pre> </div> </div> </div> </div> </div> <div class="cell border-box-sizing code_cell rendered"> <div class="input"> <div class="prompt input_prompt">In [12]:</div> <div class="inner_cell"> <div class="input_area"> <div class="highlight hl-ipython3"><pre><span></span><span class="n">rc</span><span class="o">.</span><span class="n">message</span> </pre></div> </div> </div> </div> <div class="output_wrapper"> <div class="output"> <div class="output_area"> <div class="prompt output_prompt">Out[12]:</div> <div class="output_text output_subarea output_execute_result"> <pre>''</pre> </div> </div> </div> </div> </div> <div class="cell border-box-sizing code_cell rendered"> <div class="input"> <div class="prompt input_prompt">In [13]:</div> <div class="inner_cell"> <div class="input_area"> <div class="highlight hl-ipython3"><pre><span></span><span class="n">rc</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> </pre></div> </div> </div> </div> <div class="output_wrapper"> <div class="output"> <div class="output_area"> <div class="prompt"></div> <div class="output_subarea output_text output_error"> <pre> <span class="ansi-red-fg">---------------------------------------------------------------------------</span> <span class="ansi-red-fg">TypeError</span> Traceback (most recent call last) <span class="ansi-green-fg">&lt;ipython-input-13-bf55952edf7f&gt;</span> in <span class="ansi-cyan-fg">&lt;module&gt;</span> <span class="ansi-green-fg">----&gt; 1</span><span class="ansi-red-fg"> </span>rc<span class="ansi-blue-fg">[</span><span class="ansi-cyan-fg">0</span><span class="ansi-blue-fg">]</span> <span class="ansi-red-fg">TypeError</span>: 'RetCode' object is not subscriptable</pre> </div> </div> </div> </div> </div> <div class="cell border-box-sizing code_cell rendered"> <div class="input"> <div class="prompt input_prompt">In [14]:</div> <div class="inner_cell"> <div class="input_area"> <div class="highlight hl-ipython3"><pre><span></span><span class="n">RetCode</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span> </pre></div> </div> </div> </div> <div class="output_wrapper"> <div class="output"> <div class="output_area"> <div class="prompt output_prompt">Out[14]:</div> <div class="output_text output_subarea output_execute_result"> <pre>RetCode(ok=2, message=3)</pre> </div> </div> </div> </div> </div> <div class="cell border-box-sizing code_cell rendered"> <div class="input"> <div class="prompt input_prompt">In [ ]:</div> <div class="inner_cell"> <div class="input_area"> <div class="highlight hl-ipython3"><pre><span></span> </pre></div> </div> </div> </div> </div>https://lannert.de/debloss/en/posts/ein-beispiel-fur-dataclasses/Mon, 04 Nov 2019 18:21:04 GMT