Latest recipes tagged "pretty" Code RecipesHumanize decorator (Python) 2013-07-31T16:04:13-07:00tomer filiba <p style="color: grey"> Python recipe 578619 by <a href="/recipes/users/2520014/">tomer filiba</a> (<a href="/recipes/tags/decorator/">decorator</a>, <a href="/recipes/tags/objects/">objects</a>, <a href="/recipes/tags/pretty/">pretty</a>, <a href="/recipes/tags/print/">print</a>). </p> <p>When you need to inspect Python objects in a human-readable way, you're usually required to implement a custom <code>__str__</code> or <code>__repr__</code> which are just boilerplate (e.g., <code>return "Foo(%r, %r, %r)" % (, self.spam, self.eggs)</code>. You may implement <code>__str__</code> and <code>__repr__</code> by a base-class, but it's hard to call it <em>inheritance</em> and moreover, you may wish to remove it when you're done debugging.</p> <p>This simple (yet complete) recipe is a class decorator that injects <code>__str__</code> and <code>__repr__</code> into the class being printed. It handles nesting and even cycle detection, allowing you to just plug it into existing classes to get them pretty-printed and perhaps remove it later.</p>