Latest recipes tagged "kwonly" Code RecipesPython2 keyword-only argument emulation as a decorator. Python3 compatible. (Python) 2016-04-15T13:25:20-07:00István Pásztor <p style="color: grey"> Python recipe 580639 by <a href="/recipes/users/4189380/">István Pásztor</a> (<a href="/recipes/tags/args/">args</a>, <a href="/recipes/tags/arguments/">arguments</a>, <a href="/recipes/tags/keyword/">keyword</a>, <a href="/recipes/tags/keyword_only/">keyword_only</a>, <a href="/recipes/tags/kwonly/">kwonly</a>, <a href="/recipes/tags/only/">only</a>, <a href="/recipes/tags/python2/">python2</a>). Revision 4. </p> <p>Provides a very simple decorator (~40 lines of code) that can turn some or all of your default arguments into keyword-only arguments. You select one of your default arguments by name and the decorator turn this argument along with all default arguments on its right side into keyword only arguments. Check the docstring of the decorator or visit the github/pypi page for detailed documentation:</p> <ul> <li><a href="" rel="nofollow"></a></li> <li><a href="" rel="nofollow"></a></li> </ul> <p><code>$ pip install kwonly-args</code></p> Emulate Keyword-Only Arguments in Python 2 (Python) 2011-11-03T18:31:52-07:00Eric Snow <p style="color: grey"> Python recipe 577940 by <a href="/recipes/users/4177816/">Eric Snow</a> (<a href="/recipes/tags/argument/">argument</a>, <a href="/recipes/tags/keyword_only/">keyword_only</a>, <a href="/recipes/tags/kwonly/">kwonly</a>, <a href="/recipes/tags/parameter/">parameter</a>). </p> <p>Python 3 introduced a useful feature: keyword-only arguments. In order to get the same effect in Python 2, you must use **kwargs in your parameter list. Then, at the beginning of your function body you must manually extract what would be the keyword-only arguments once you upgrade to 3.</p> <p>This recipe helps reduce the boilerplate to a single function call. You still don't get those parameters in your "def" clause (where they are more obvious), but at least it reduces the clutter.</p>