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<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="generator" content="Docutils 0.19: https://docutils.sourceforge.io/" />
<title>Releases — param v2.1.1rc2</title>
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<section id="releases">
<h1>Releases<a class="headerlink" href="#releases" title="Permalink to this heading">#</a></h1>
<section id="version-2-1-1">
<h2>Version 2.1.1<a class="headerlink" href="#version-2-1-1" title="Permalink to this heading">#</a></h2>
<p>Date: 2024-06-25</p>
<p>This minor release contains bug fixes for reactive expressions and a few minor documentation improvements. Thanks to @jrycw for their first contribution! And to @ahuang11, @maximelt, and @philippjfr for their continued maintenance and development efforts.</p>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Ensure <code class="docutils literal notranslate"><span class="pre">rx._callback</span></code> resolves accessors (<a class="reference external" href="https://github.com/holoviz/param/pull/949">#949</a>)</p></li>
<li><p>Ensure refs can be updated by watcher of the same parameter (<a class="reference external" href="https://github.com/holoviz/param/pull/929">#929</a>)</p></li>
<li><p>Recursively resolve references on args and kwargs passed to a reactive operation (<a class="reference external" href="https://github.com/holoviz/param/pull/944">#944</a>)</p></li>
<li><p>Only override the name of a Parameterized instance on Parameter instantiation when <code class="docutils literal notranslate"><span class="pre">instantiate=True</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/938">#938</a>)</p></li>
</ul>
<p>Documentation:</p>
<ul class="simple">
<li><p>Various minor documentation improvements (<a class="reference external" href="https://github.com/holoviz/param/pull/933">#933</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/935">#935</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/941">#941</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/947">#947</a>)</p></li>
</ul>
<p>Maintenance:</p>
<ul class="simple">
<li><p>Fix <code class="docutils literal notranslate"><span class="pre">test_reactive_logic_unary_ops</span></code> on Python 3.12 (<a class="reference external" href="https://github.com/holoviz/param/pull/946">#946</a>)</p></li>
</ul>
<p><a class="reference external" href="https://github.com/holoviz/param/compare/v2.1.0...v2.1.1"><em>Full Changelog</em></a></p>
</section>
<section id="version-2-1-0">
<h2>Version 2.1.0<a class="headerlink" href="#version-2-1-0" title="Permalink to this heading">#</a></h2>
<p>Date: 2024-03-22</p>
<p>This minor release focuses on improving reactive expressions and support for asynchronous (and synchronous) generators. Many thanks to @maximelt, @Hoxbro and @philippjfr for their continued maintenance and development efforts.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Improvements for synchronous and asychronous generators (<a class="reference external" href="https://github.com/holoviz/param/pull/908">#908</a>)</p></li>
<li><p>Additions to the .rx namespace including <code class="docutils literal notranslate"><span class="pre">and_</span></code>, <code class="docutils literal notranslate"><span class="pre">bool</span></code>, <code class="docutils literal notranslate"><span class="pre">map</span></code>, <code class="docutils literal notranslate"><span class="pre">not_</span></code>, <code class="docutils literal notranslate"><span class="pre">or_</span></code> and <code class="docutils literal notranslate"><span class="pre">updating</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/906">#906</a>)</p></li>
<li><p>Add support for adding asynchronous watcher to <code class="docutils literal notranslate"><span class="pre">rx</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/917">#917</a>)</p></li>
<li><p>Make it possible to resolve reactive expressions recursively with <code class="docutils literal notranslate"><span class="pre">.rx.resolve</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/918">#918</a>)</p></li>
<li><p>Add support for async and generator functions in <code class="docutils literal notranslate"><span class="pre">.rx.pipe</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/924">#924</a>)</p></li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Ensure that <code class="docutils literal notranslate"><span class="pre">.param.update</span></code> context manager restore refs (<a class="reference external" href="https://github.com/holoviz/param/pull/915">#915</a>)</p></li>
<li><p>Avoid overeager root invalidation on <code class="docutils literal notranslate"><span class="pre">rx</span></code> leading to unnecessary evaluation (<a class="reference external" href="https://github.com/holoviz/param/pull/919">#919</a>)</p></li>
</ul>
<p>Deprecations:</p>
<ul class="simple">
<li><p>Passing positional arguments to <code class="docutils literal notranslate"><span class="pre">Parameter</span></code> now raises a <code class="docutils literal notranslate"><span class="pre">ParamDeprecationWarning</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/921">#921</a>)</p></li>
</ul>
<p><a class="reference external" href="https://github.com/holoviz/param/compare/v2.0.2...v2.1.0"><em>Full Changelog</em></a></p>
</section>
<section id="version-2-0-2">
<h2>Version 2.0.2<a class="headerlink" href="#version-2-0-2" title="Permalink to this heading">#</a></h2>
<p>Date: 2024-01-17</p>
<p>This patch release fixes a few bugs and introduces a performance enhancement. Many thanks to @alfredocarella for their first contribution, and to the maintainers @maximlt and @philippjfr for contributing to this release.</p>
<p>Optimization:</p>
<ul class="simple">
<li><p>Minor optimizations in hot codepaths accessing class parameters (<a class="reference external" href="https://github.com/holoviz/param/pull/893">#893</a>)</p></li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Unpack partial callables in <code class="docutils literal notranslate"><span class="pre">iscoroutinefunction</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/894">#894</a>)</p></li>
<li><p>Fix building Param with <code class="docutils literal notranslate"><span class="pre">setuptools-scm<7</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/903">#903</a>)</p></li>
</ul>
<p>Documentation:</p>
<ul class="simple">
<li><p>Replace <em>Google Analytics</em> with <em>GoatCounter</em> (<a class="reference external" href="https://github.com/holoviz/param/pull/895">#895</a>)</p></li>
<li><p>Fix a typo in <code class="docutils literal notranslate"><span class="pre">Outputs.ipynb</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/892">#892</a>)</p></li>
</ul>
<p><a class="reference external" href="https://github.com/holoviz/param/compare/v2.0.1...v2.0.2"><em>Full Changelog</em></a></p>
</section>
<section id="version-2-0-1">
<h2>Version 2.0.1<a class="headerlink" href="#version-2-0-1" title="Permalink to this heading">#</a></h2>
<p>Date: 2023-11-08</p>
<p>This minor release fixes a number of bugs, including a regression introduced by the replacement of the build backend (<code class="docutils literal notranslate"><span class="pre">setuptools</span></code> for <code class="docutils literal notranslate"><span class="pre">hatchling</span></code>) which led to the <code class="docutils literal notranslate"><span class="pre">doc</span></code> folder being wrongly packaged. Many thanks to @SultanOrazbayev for their first contribution, to @musicinmybrain for spotting the regression and submitting fixes, and to the maintainers @Hoxbro, @jbednar and @maximlt for contributing to this release.</p>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Do not install <code class="docutils literal notranslate"><span class="pre">doc</span></code> folder in <em>site-packages</em> (<a class="reference external" href="https://github.com/holoviz/param/pull/878">#878</a>)</p></li>
<li><p>Drop the <code class="docutils literal notranslate"><span class="pre">feather-format</span></code> test dependency (<a class="reference external" href="https://github.com/holoviz/param/pull/879">#879</a>)</p></li>
<li><p>Add <code class="docutils literal notranslate"><span class="pre">tables</span></code> to the <code class="docutils literal notranslate"><span class="pre">tests-deser</span></code> extra (<a class="reference external" href="https://github.com/holoviz/param/pull/880">#880</a>)</p></li>
<li><p>Fix <code class="docutils literal notranslate"><span class="pre">_state_push</span></code> and <code class="docutils literal notranslate"><span class="pre">_state_pop</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/884">#884</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">version.py</span></code>: new process should not create a window on Windows (<a class="reference external" href="https://github.com/holoviz/param/pull/882">#882</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/886">#886</a>)</p></li>
<li><p>Don’t import <code class="docutils literal notranslate"><span class="pre">setuptools_scm</span></code> if the <code class="docutils literal notranslate"><span class="pre">.git</span></code> folder doesn’t exist (<a class="reference external" href="https://github.com/holoviz/param/pull/885">#885</a>)</p></li>
</ul>
<p>Documentation:</p>
<ul class="simple">
<li><p>Add migration guide to Param 2.0 (<a class="reference external" href="https://github.com/holoviz/param/pull/883">#883</a>)</p></li>
<li><p>Update Parameter API reference (<a class="reference external" href="https://github.com/holoviz/param/pull/881">#881</a>)</p></li>
</ul>
<p><a class="reference external" href="https://github.com/holoviz/param/compare/v2.0.0...v2.0.1"><em>Full Changelog</em></a></p>
</section>
<section id="version-2-0-0">
<h2>Version 2.0.0<a class="headerlink" href="#version-2-0-0" title="Permalink to this heading">#</a></h2>
<p>Date: 2023-10-24</p>
<p>20 years after its creation, Param has reached version 2.0! Can you guess when Param 3.0 will be released?</p>
<p>Param 2.0 is a major new release available for Python 3.8 and above, significantly streamlining, simplifying, and improving the Param API. Many long-supported but also long-obsolete functions, methods, and usages will now warn loudly so that you can make sure your code is only using the fully supported and safe current approaches. Because upgrading to Param 2 is likely to reveal compatibility issues with older codebases, new releases in the 1.x series are expected to continue for some time, focused on compatibility with the ecosystem rather than adding new features. Thus you can keep using Param 1.x with your older code, but Param 2 is the future!</p>
<p>We would like to thank @minimav for their first contribution, and @droumis, @Hoxbro, @jbednar, @maximlt, @philippjfr and @sdrobert for their contributions. We would also like to thank @ceball, who made the first plans for Param 2.0 quite a few years ago, and we are glad to be delivering on them at last!</p>
<section id="major-enhancements-and-features">
<h3>Major enhancements and features<a class="headerlink" href="#major-enhancements-and-features" title="Permalink to this heading">#</a></h3>
<ul class="simple">
<li><p>Parameter slot values are now all inherited correctly across a hierarchy of Parameterized classes, making their behavior much clearer and more consistent. Let’s say we have class <code class="docutils literal notranslate"><span class="pre">B</span></code> being a subclass of <code class="docutils literal notranslate"><span class="pre">A</span></code>, itself being a subclass of <code class="docutils literal notranslate"><span class="pre">param.Parameterized</span></code>. If <code class="docutils literal notranslate"><span class="pre">A</span></code> defines <code class="docutils literal notranslate"><span class="pre">x</span> <span class="pre">=</span> <span class="pre">Number(1,</span> <span class="pre">bounds=(0,</span> <span class="pre">10))</span></code> and <code class="docutils literal notranslate"><span class="pre">B</span></code> defines <code class="docutils literal notranslate"><span class="pre">x</span> <span class="pre">=</span> <span class="pre">Number(2)</span></code>, <code class="docutils literal notranslate"><span class="pre">B.param['x'].bounds</span></code> is now going to be inherited from <code class="docutils literal notranslate"><span class="pre">A</span></code> and equal to <code class="docutils literal notranslate"><span class="pre">(0,</span> <span class="pre">10)</span></code> as you would expect. Parameterized classes have always supported inheritance, but the previous mechanism was based on using <code class="docutils literal notranslate"><span class="pre">None</span></code> to indicate which values should be inherited, which was highly problematic because <code class="docutils literal notranslate"><span class="pre">None</span></code> was also a valid value for many slots. All Parameter slot signatures now default to the new <code class="docutils literal notranslate"><span class="pre">Undefined</span></code> sentinel, finally allowing <code class="docutils literal notranslate"><span class="pre">None</span></code> to be inherited where appropriate. (<a class="reference external" href="https://github.com/holoviz/param/pull/605">#605</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/771">#771</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/791">#791</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/874">#874</a>)</p></li>
<li><p>The <code class="docutils literal notranslate"><span class="pre">objects</span></code> slot of a Selector was previously highly confusing, because it accepted either a dictionary or a list for initialization but then was accessible only as a list, making it difficult to watch or update the objects. There is now a <code class="docutils literal notranslate"><span class="pre">ListProxy</span></code> wrapper around <code class="docutils literal notranslate"><span class="pre">Selector.objects</span></code> (with forward and backward compatibility) to easily update <code class="docutils literal notranslate"><span class="pre">objects</span></code> and watch <code class="docutils literal notranslate"><span class="pre">objects</span></code> updates (<a class="reference external" href="https://github.com/holoviz/param/pull/598">#598</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/825">#825</a>)</p></li>
<li><p>Parameterized classes and instances now have a rich HTML representation that is displayed automatically in a Jupyter/IPython notebook. For a class or instance <code class="docutils literal notranslate"><span class="pre">p</span></code>, just return <code class="docutils literal notranslate"><span class="pre">p.param</span></code> in a notebook cell to see a table of all the Parameters of the class/instance, their state, type, and range, plus the docstring on hover. It is likely we will improve the content and design of this repr based on feedback, so please let us know what you think! (<a class="reference external" href="https://github.com/holoviz/param/pull/425">#425</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/781">#781</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/821">#821</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/831">#831</a>)</p></li>
<li><p>Parameters have all gained the <code class="docutils literal notranslate"><span class="pre">allow_refs</span></code> and <code class="docutils literal notranslate"><span class="pre">nested_refs</span></code> attributes, bringing an exceptionally useful feature that was available in Panel since version 1.2 to Param. Declaring a Parameter with <code class="docutils literal notranslate"><span class="pre">allow_refs=True</span></code> (<code class="docutils literal notranslate"><span class="pre">False</span></code> by default) allows setting this Parameter value with a <em>reference</em> to automatically mirror the value of the reference. Supported references include class/instance Parameter objects, functions/methods decorated with <code class="docutils literal notranslate"><span class="pre">param.depends</span></code>, reactive functions and expressions, asynchronous generators and custom objects transformed into a valid reference with a hook registered with <code class="docutils literal notranslate"><span class="pre">param.parameterized.register_reference_transform</span></code>. <code class="docutils literal notranslate"><span class="pre">nested_refs</span></code> indicate whether references should be resolved even when they are nested inside a container (<a class="reference external" href="https://github.com/holoviz/param/pull/843">#843</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/845">#845</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/849">#849</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/865">#865</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/862">#862</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/876">#876</a>)</p></li>
<li><p>Experimental new <code class="docutils literal notranslate"><span class="pre">rx</span></code> reactive expressions: Param is widely used for building web apps in the HoloViz ecosystem, where packages have added various mechanisms for dynamic updates (e.g. <code class="docutils literal notranslate"><span class="pre">pn.bind</span></code> and <code class="docutils literal notranslate"><span class="pre">pn.depends</span></code> in Panel, and <code class="docutils literal notranslate"><span class="pre">.interactive</span></code> in hvPlot). These mechanisms were already built on Param and can be used far more widely than just in those packages, so that functionality has now been generalized, streamlined, and moved into Param. Nearly any Python expression can now be made reactive with <code class="docutils literal notranslate"><span class="pre">param.rx()</span></code>, at which point it will collect and be able to replay any operations (e.g. method calls) performed on them. This reactive programming approach lets you take just about any existing Python workflow and replace attributes with widgets or other reactive values, creating an app with fine-grained user control without having to design callbacks, event handlers, or any other complex logic! <code class="docutils literal notranslate"><span class="pre">rx</span></code> support is still experimental while we get feedback about the API, packaging, and documentation, but it’s fully ready to try out and give us suggestions!
(<a class="reference external" href="https://github.com/holoviz/param/pull/460">#460</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/842">#842</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/841">#841</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/844">#844</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/846">#846</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/847">#847</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/850">#850</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/851">#851</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/856">#856</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/860">#860</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/854">#854</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/859">#859</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/858">#858</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/873">#873</a>)</p></li>
</ul>
</section>
<section id="enhancements">
<h3>Enhancements<a class="headerlink" href="#enhancements" title="Permalink to this heading">#</a></h3>
<ul class="simple">
<li><p>Parameter slot values that are set to mutable containers (e.g. <code class="docutils literal notranslate"><span class="pre">Selector(objects=a_list)</span></code>) will now be shallow-copied on instantiation, so that the container is no longer confusingly shared between the class and its subclasses and instances (<a class="reference external" href="https://github.com/holoviz/param/pull/826">#826</a>)</p></li>
<li><p>To further clean up the Parameterized namespace (first started in version 1.7.0), the remaining private attributes haven been collected under two private namespaces <code class="docutils literal notranslate"><span class="pre">_param__private</span></code> and <code class="docutils literal notranslate"><span class="pre">_param__parameters</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/766">#766</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/790">#790</a>)</p></li>
<li><p>You can now use <code class="docutils literal notranslate"><span class="pre">.param.update</span></code> as a context manager for applying temporary updates (<a class="reference external" href="https://github.com/holoviz/param/pull/779">#779</a>)</p></li>
<li><p>The <code class="docutils literal notranslate"><span class="pre">name</span></code> Parameter has always had special behavior dating to its use in labeling objects in a GUI context, but this behavior is now able to be overriden at the class and instance level (<a class="reference external" href="https://github.com/holoviz/param/pull/740">#740</a>)</p></li>
<li><p>Improved Parameter signatures for static and dynamic code analysis (<a class="reference external" href="https://github.com/holoviz/param/pull/742">#742</a>)</p></li>
<li><p>Removed inferred Parameterized docstring signature and add basic <code class="docutils literal notranslate"><span class="pre">__signature__</span></code> support (<a class="reference external" href="https://github.com/holoviz/param/pull/802">#802</a>)</p></li>
<li><p>For speed, only generate the Parameter docstring in an IPython context (<a class="reference external" href="https://github.com/holoviz/param/pull/774">#774</a>)</p></li>
<li><p>Improve Parameter validation error messages (<a class="reference external" href="https://github.com/holoviz/param/pull/808">#808</a>)</p></li>
<li><p>Support for deserialization of file types into <code class="docutils literal notranslate"><span class="pre">Array</span></code> and <code class="docutils literal notranslate"><span class="pre">DataFrame</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/482">#482</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Integer</span></code> now accepts <code class="docutils literal notranslate"><span class="pre">numpy.integer</span></code> values (<a class="reference external" href="https://github.com/holoviz/param/pull/735">#735</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Range</span></code> now does stricter validation of the slot values (<a class="reference external" href="https://github.com/holoviz/param/pull/725">#725</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/824">#824</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Path</span></code> now has <code class="docutils literal notranslate"><span class="pre">check_exists</span></code> attribute, leading it to raise an error if <code class="docutils literal notranslate"><span class="pre">path</span></code> is not found on parameter instantiation (<a class="reference external" href="https://github.com/holoviz/param/pull/800">#800</a>)</p></li>
<li><p>Add top-level <code class="docutils literal notranslate"><span class="pre">__all__</span></code> and move Parameter classes to <code class="docutils literal notranslate"><span class="pre">parameters.py</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/853">#853</a>)</p></li>
</ul>
</section>
<section id="bug-fixes">
<h3>Bug fixes<a class="headerlink" href="#bug-fixes" title="Permalink to this heading">#</a></h3>
<ul class="simple">
<li><p>Allow type change for <code class="docutils literal notranslate"><span class="pre">DateRange</span></code> and <code class="docutils literal notranslate"><span class="pre">Date</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/733">#733</a>)</p></li>
<li><p>Ensure class watchers are not inherited by instance parameter (<a class="reference external" href="https://github.com/holoviz/param/pull/833">#833</a>)</p></li>
<li><p>Fix multi-level indirection in Parameters access (<a class="reference external" href="https://github.com/holoviz/param/pull/840">#840</a>)</p></li>
<li><p>Ensure non-function types are not resolved as empty function declarations (<a class="reference external" href="https://github.com/holoviz/param/pull/753">#753</a>)</p></li>
<li><p>Fix watchers support when the Parameterized instance is falsy (<a class="reference external" href="https://github.com/holoviz/param/pull/769">#769</a>)</p></li>
<li><p>Fix depending on the method of a sub-parameter object (<a class="reference external" href="https://github.com/holoviz/param/pull/765">#765</a>)</p></li>
<li><p>Raise an error on bad non-watched references (<a class="reference external" href="https://github.com/holoviz/param/pull/777">#777</a>)</p></li>
<li><p>Ensure that the root dependency can be resolved, and error otherwise (<a class="reference external" href="https://github.com/holoviz/param/pull/813">#813</a>)</p></li>
<li><p>Fix basic pickling (<a class="reference external" href="https://github.com/holoviz/param/pull/783">#783</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/792">#792</a>)</p></li>
<li><p>Validate that <code class="docutils literal notranslate"><span class="pre">self</span></code> is present in the <code class="docutils literal notranslate"><span class="pre">__init__</span></code> signature of a Parameterized class (<a class="reference external" href="https://github.com/holoviz/param/pull/786">#786</a>)</p></li>
<li><p>No longer force <code class="docutils literal notranslate"><span class="pre">instantiate</span></code> to True when <code class="docutils literal notranslate"><span class="pre">constant</span></code> is True (<a class="reference external" href="https://github.com/holoviz/param/pull/776">#776</a>)</p></li>
<li><p>Instantiate default Parameter values based on all the Parameters available (<a class="reference external" href="https://github.com/holoviz/param/pull/798">#798</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Array</span></code>: fix <code class="docutils literal notranslate"><span class="pre">param.pprint</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/795">#795</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Array</span></code>: don’t hard-code <code class="docutils literal notranslate"><span class="pre">allow_None</span></code> to <code class="docutils literal notranslate"><span class="pre">True</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/726">#726</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Boolean</span></code>: validate the default type (<a class="reference external" href="https://github.com/holoviz/param/pull/722">#722</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">FileSelector</span></code>: made more consistent with <code class="docutils literal notranslate"><span class="pre">Selector</span></code> by defaulting to the first globbed path (<a class="reference external" href="https://github.com/holoviz/param/pull/801">#801</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">FileSelector</span></code>: ensure path separators are consistent on Windows (<a class="reference external" href="https://github.com/holoviz/param/pull/805">#805</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Path</span></code>: raise a <code class="docutils literal notranslate"><span class="pre">ValueError</span></code> if set to <code class="docutils literal notranslate"><span class="pre">None</span></code> while not allowed (<a class="reference external" href="https://github.com/holoviz/param/pull/799">#799</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Selector</span></code>: populate <code class="docutils literal notranslate"><span class="pre">objects</span></code> when <code class="docutils literal notranslate"><span class="pre">check_on_set</span></code> is False and <code class="docutils literal notranslate"><span class="pre">default</span></code> is not in <code class="docutils literal notranslate"><span class="pre">objects</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/794">#794</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/817">#817</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">File/MultiFileSelector</span></code>: updating <code class="docutils literal notranslate"><span class="pre">path</span></code> updates <code class="docutils literal notranslate"><span class="pre">objects</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/814">#814</a>)</p></li>
</ul>
</section>
<section id="documentation">
<h3>Documentation<a class="headerlink" href="#documentation" title="Permalink to this heading">#</a></h3>
<ul class="simple">
<li><p>Build the site with <code class="docutils literal notranslate"><span class="pre">sphinx</span></code> directly and refactor the API reference (<a class="reference external" href="https://github.com/holoviz/param/pull/810">#810</a>)</p></li>
<li><p>Update to the latest version of <code class="docutils literal notranslate"><span class="pre">pydata-sphinx-theme</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/752">#752</a>)</p></li>
<li><p>Update to Google Analytics 4 (<a class="reference external" href="https://github.com/holoviz/param/pull/758">#758</a>)</p></li>
<li><p>Fix minor errors in the Getting Started (<a class="reference external" href="https://github.com/holoviz/param/pull/787">#787</a>)</p></li>
<li><p>Add OpenCollective sponsor link on the repository page (<a class="reference external" href="https://github.com/holoviz/param/pull/811">#811</a>)</p></li>
</ul>
</section>
<section id="infrastructure">
<h3>Infrastructure<a class="headerlink" href="#infrastructure" title="Permalink to this heading">#</a></h3>
<ul class="simple">
<li><p>Increase the test suite coverage (<a class="reference external" href="https://github.com/holoviz/param/pull/716">#716</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/717">#717</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/719">#719</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/720">#720</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/739">#739</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/775">#775</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/778">#778</a>)</p></li>
<li><p>Turn warnings into exceptions in the test suite (<a class="reference external" href="https://github.com/holoviz/param/pull/738">#738</a>)</p></li>
<li><p>Add notebook smoke tests (<a class="reference external" href="https://github.com/holoviz/param/pull/750">#750</a>)</p></li>
<li><p>Upgrades to leverage <code class="docutils literal notranslate"><span class="pre">hatch</span></code>, <code class="docutils literal notranslate"><span class="pre">pyproject.toml</span></code> and <code class="docutils literal notranslate"><span class="pre">pre-commit</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/749">#749</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/772">#772</a>)</p></li>
<li><p>Add basic benchmark suite using <code class="docutils literal notranslate"><span class="pre">asv</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/788">#788</a>)</p></li>
<li><p>Reduce the number of tested Python versions (<a class="reference external" href="https://github.com/holoviz/param/pull/732">#732</a>)</p></li>
<li><p>Run the tests with Python 3.12 (<a class="reference external" href="https://github.com/holoviz/param/pull/863">#863</a>)</p></li>
</ul>
</section>
<section id="compatibility">
<h3>Compatibility<a class="headerlink" href="#compatibility" title="Permalink to this heading">#</a></h3>
<ul class="simple">
<li><p>Drop support for Python 2.7, 3.6, and 3.7 and upgrade the code base accordingly (<a class="reference external" href="https://github.com/holoviz/param/pull/741">#741</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/784">#784</a>)</p></li>
</ul>
</section>
<section id="breaking-changes">
<h3>Breaking changes<a class="headerlink" href="#breaking-changes" title="Permalink to this heading">#</a></h3>
<ul class="simple">
<li><p>While it’s a major improvement to the definition of Parameters, properly inheriting Parameter slots can result in some Parameter slot values being different in Param 2, because Param 1 was sometimes silently not inheriting slot values.</p></li>
<li><p>User-defined <code class="docutils literal notranslate"><span class="pre">Parameter</span></code> classes should be updated to use <code class="docutils literal notranslate"><span class="pre">Undefined</span></code> as the formal default for any new slots, with the actual default defined on the new <code class="docutils literal notranslate"><span class="pre">_slot_defaults</span></code> dictionary. Otherwise, any new slot will fail to support inheritance, even if it was set to <code class="docutils literal notranslate"><span class="pre">None</span></code>, which would previously support inheritance.</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Parameterized</span></code> methods that were deprecated since Param 1.7.0 have finally been removed. These are now mostly available on the <code class="docutils literal notranslate"><span class="pre">.param</span></code> namespace (<a class="reference external" href="https://github.com/holoviz/param/pull/592">#592</a>)</p></li>
<li><p>No longer supports setting non-Parameter class attributes during initialization, and no longer warns when setting non-Parameter class attributes directly (<a class="reference external" href="https://github.com/holoviz/param/pull/729">#729</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">instance.param.watchers</span></code> no longer returns the transient dict of watchers but instead returns the instance watchers, as the now deprecated <code class="docutils literal notranslate"><span class="pre">instance._param_watchers</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/797">#797</a>)</p></li>
<li><p>Removed deprecated <code class="docutils literal notranslate"><span class="pre">Parameterized.pprint</span></code>, <code class="docutils literal notranslate"><span class="pre">Parameterized._pprint</span></code>, <code class="docutils literal notranslate"><span class="pre">Parameterized.script_repr</span></code>, <code class="docutils literal notranslate"><span class="pre">ParameterizedFunction.script_repr</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/767">#767</a>)</p></li>
<li><p>Removed <code class="docutils literal notranslate"><span class="pre">Time.next</span></code> method needed only for Python 2, and moved <code class="docutils literal notranslate"><span class="pre">Parameterized.state_pop</span></code> and <code class="docutils literal notranslate"><span class="pre">Parameterized.state_push</span></code> to the <code class="docutils literal notranslate"><span class="pre">.param</span></code> namespace (<a class="reference external" href="https://github.com/holoviz/param/pull/767">#767</a>)</p></li>
<li><p>Some removals were considered harmless and thus implemented immediately without a deprecation period:</p>
<ul>
<li><p>Removed unused <code class="docutils literal notranslate"><span class="pre">bounds</span></code> slot from <code class="docutils literal notranslate"><span class="pre">Boolean</span></code> and <code class="docutils literal notranslate"><span class="pre">Event</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/744">#744</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/755">#755</a>)</p></li>
<li><p>Removed private Parameter <code class="docutils literal notranslate"><span class="pre">_internal_name</span></code> slot (<a class="reference external" href="https://github.com/holoviz/param/pull/796">#796</a>)</p></li>
</ul>
</li>
</ul>
</section>
<section id="deprecations">
<h3>Deprecations<a class="headerlink" href="#deprecations" title="Permalink to this heading">#</a></h3>
<p>This section lists functionality that is expected to be removed sometime in the next couple of 2.x releases, so if you use Param 2, please take care of these warnings as soon as you encounter them, and certainly before you upgrade to the next release!</p>
<p>Param 2.0 adds a validation step of the <em>default</em> value of a Parameter after the inheritance mechanism has completed if its type has changed (e.g. <code class="docutils literal notranslate"><span class="pre">x</span></code> in class <code class="docutils literal notranslate"><span class="pre">A</span></code> is a <code class="docutils literal notranslate"><span class="pre">Number</span></code> and in class <code class="docutils literal notranslate"><span class="pre">B(A)</span></code> is an <code class="docutils literal notranslate"><span class="pre">Integer</span></code>) or one of its slot values has changed (<a class="reference external" href="https://github.com/holoviz/param/pull/812">#812</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/820">#820</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/857">#857</a>). We have decided to only emit a warning when this validation fails to make your life easier when upgrading your code from Param 1 to 2, as the validation is performed on class creation which means that any validation error breaks importing your code. You should definitely take care of these warnings, they indicate a Parameter is in an invalid state!</p>
<p>We continue to clean up Param’s API (<a class="reference external" href="https://github.com/holoviz/param/pull/734">#734</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/751">#751</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/768">#768</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/797">#797</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/834">#834</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/838">#838</a>) but have decided to do it in a gentle way, emitting deprecation warnings for a period of time before proceeding with removals. You will find below the complete list of deprecation warnings added in Param 2.0.</p>
<ul class="simple">
<li><p>Parameter signature:</p>
<ul>
<li><p>Instantiating most parameters with positional arguments beyond <code class="docutils literal notranslate"><span class="pre">default</span></code> is deprecated:</p>
<ul>
<li><p><code class="docutils literal notranslate"><span class="pre">String('prefix-test',</span> <span class="pre">'^prefix')</span></code>: deprecated!</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">String('prefix-test',</span> <span class="pre">regex='^prefix')</span></code>: OK</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">String(default='prefix-test',</span> <span class="pre">regex='^prefix')</span></code>: OK</p></li>
</ul>
</li>
<li><p>For <code class="docutils literal notranslate"><span class="pre">Selector</span></code> parameters that accept <code class="docutils literal notranslate"><span class="pre">objects</span></code> as first positional argument, and <code class="docutils literal notranslate"><span class="pre">ClassSelector</span></code> parameters that accept <code class="docutils literal notranslate"><span class="pre">class_</span></code> as first positional argument, passing any argument by position is deprecated:</p>
<ul>
<li><p><code class="docutils literal notranslate"><span class="pre">Selector([1,</span> <span class="pre">2])</span></code>: deprecated!</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Selector(objects=[1,</span> <span class="pre">2])</span></code>: OK</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">ClassSelector((str,</span> <span class="pre">int))</span></code>: deprecated!</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">ClassSelector(class_=(str,</span> <span class="pre">int))</span></code>: OK</p></li>
<li><p>It’s possible that in the future the signature of these two parameters will be aligned with the other parameters to accept <code class="docutils literal notranslate"><span class="pre">default</span></code> as first and only positional argument, but for now please use an explicit keyword so that your code will be compatible with all versions.</p></li>
</ul>
</li>
</ul>
</li>
<li><p>Parameter slots:</p>
<ul>
<li><p><code class="docutils literal notranslate"><span class="pre">List._class</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">item_type</span></code>.</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Number.set_hook</span></code>: no replacement</p></li>
</ul>
</li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.__init__</span></code> module:</p>
<ul>
<li><p><code class="docutils literal notranslate"><span class="pre">param.produce_value</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.as_unicode</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.is_ordered_dict</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.is_ordered_dict</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.hashable</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.named_objs</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.normalize_path</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.abbreviate_paths</span></code>: no replacement</p></li>
</ul>
</li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.parameterized</span></code> module:</p>
<ul>
<li><p><code class="docutils literal notranslate"><span class="pre">param.parameterized.all_equal</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.parameterized.add_metaclass</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.parameterized.batch_watch</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">batch_call_watchers</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.parameterized.recursive_repr</span></code>: no replacement</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">param.parameterized.overridable_property</span></code>: no replacement</p></li>
</ul>
</li>
<li><p>Parameterized <code class="docutils literal notranslate"><span class="pre">.param</span></code> namespace; many of these methods have been deprecated since version 1.12.0, however, this was just announced in the release notes and we realised many users missed them, sometimes even us included! They now all emit deprecation warnings when executed and are clearly marked as deprecated in the API reference:</p>
<ul>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.set_default</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">for</span> <span class="pre">k,v</span> <span class="pre">in</span> <span class="pre">p.param.objects().items():</span> <span class="pre">print(f"{p.__class__.name}.{k}={repr(v.default)}")</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param._add_parameter</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">.param.add_parameter</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.params</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">.param.values()</span></code> or <code class="docutils literal notranslate"><span class="pre">.param['param']</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.set_param</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">.param.update</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.get_param_values</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">.param.values().items()</span></code> (or <code class="docutils literal notranslate"><span class="pre">.param.values()</span></code> for the common case of <code class="docutils literal notranslate"><span class="pre">dict(....param.get_param_values())</span></code>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.params_depended_on</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">.param.method_dependencies</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.defaults</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">{k:v.default</span> <span class="pre">for</span> <span class="pre">k,v</span> <span class="pre">in</span> <span class="pre">p.param.objects().items()}</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.print_param_defaults</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">for</span> <span class="pre">k,v</span> <span class="pre">in</span> <span class="pre">p.param.objects().items():</span> <span class="pre">print(f"{p.__class__.name}.{k}={repr(v.default)}")</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.print_param_values</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">for</span> <span class="pre">k,v</span> <span class="pre">in</span> <span class="pre">p.param.objects().items():</span> <span class="pre">print(f"{p.__class__.name}.{k}={repr(v.default)}")</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.message</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">.param.log(param.MESSAGE,</span> <span class="pre">...)</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.verbose</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">.param.log(param.VERBOSE,</span> <span class="pre">...)</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">.param.debug</span></code>: use instead <code class="docutils literal notranslate"><span class="pre">.param.log(param.DEBUG,</span> <span class="pre">...)</span></code></p></li>
</ul>
</li>
<li><p>Running unsafe operations <strong>during Parameterized instance initialization</strong>, instead run these operations after having called <code class="docutils literal notranslate"><span class="pre">super().__init__(**params)</span></code>:</p>
<ul>
<li><p><code class="docutils literal notranslate"><span class="pre">instance.param.objects(instance=True)</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">instance.param.trigger("<param_name>")</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">instance.param.watch(callback,</span> <span class="pre">"<param_name>")</span></code></p></li>
</ul>
</li>
<li><p>Parameterized namespace:</p>
<ul>
<li><p><code class="docutils literal notranslate"><span class="pre">instance._param_watchers</span></code> (getter and setter): use instead the property <code class="docutils literal notranslate"><span class="pre">inst.param.watchers</span></code></p></li>
</ul>
</li>
</ul>
<p><a class="reference external" href="https://github.com/holoviz/param/compare/v1.13.0...v2.0.0"><em>Full Changelog</em></a></p>
</section>
</section>
<section id="version-1-13-0">
<h2>Version 1.13.0<a class="headerlink" href="#version-1-13-0" title="Permalink to this heading">#</a></h2>
<p>Date: 2023-03-14</p>
<p>The <code class="docutils literal notranslate"><span class="pre">1.13.0</span></code> is the last release of Param before the 2.0 release. However, Param 1.13 is meant to receive long-term support; security patches and fixes to critical bugs are planned to be backported to the 1.13.x series.</p>
<p>This release includes a new <code class="docutils literal notranslate"><span class="pre">Bytes</span></code> <em>Parameter</em> and a few important bug fixes. This release is also marked by the adoption of a formal project governance, ensuring Param’s future as a healthy open-source project. Many thanks to @ovidner and @droumis for their first contributions! And to @maximlt, @Hoxbro, @jlstevens, @philippjfr and @jbednar for their continuing support to fixing and improving Param.</p>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Fix copying when having watchers on e.g. bounds on inherited Parameter types (<a class="reference external" href="https://github.com/holoviz/param/pull/675">#675</a>)</p></li>
<li><p>Allow JSON serialization to work with <code class="docutils literal notranslate"><span class="pre">json.dumps</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/655">#655</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">ListSelector</span></code> restricted to <code class="docutils literal notranslate"><span class="pre">list</span></code> type objects (<a class="reference external" href="https://github.com/holoviz/param/pull/531">#531</a>)</p></li>
<li><p>Fix <code class="docutils literal notranslate"><span class="pre">depends</span></code> async wrapper (<a class="reference external" href="https://github.com/holoviz/param/pull/684">#684</a>)</p></li>
<li><p>Allow named colors to be any case (<a class="reference external" href="https://github.com/holoviz/param/pull/711">#711</a>)</p></li>
</ul>
<p>New features:</p>
<ul class="simple">
<li><p>Add Bytes parameter (<a class="reference external" href="https://github.com/holoviz/param/pull/542">#542</a>)</p></li>
</ul>
<p>Documentation:</p>
<ul class="simple">
<li><p>Fix param module link (<a class="reference external" href="https://github.com/holoviz/param/pull/682">#682</a>)</p></li>
</ul>
<p>Project governance:</p>
<ul class="simple">
<li><p>Create initial project governance docs (<a class="reference external" href="https://github.com/holoviz/param/pull/674">#674</a>)</p></li>
</ul>
<p>Maintenance:</p>
<ul class="simple">
<li><p>Rename <code class="docutils literal notranslate"><span class="pre">master</span></code> branch to <code class="docutils literal notranslate"><span class="pre">main</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/672">#672</a>)</p></li>
<li><p>Add more tests (<a class="reference external" href="https://github.com/holoviz/param/pull/710">#710</a>)</p></li>
<li><p>Various CI related fixes (<a class="reference external" href="https://github.com/holoviz/param/pull/680">#680</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/683">#683</a> and <a class="reference external" href="https://github.com/holoviz/param/pull/709">#709</a>)</p></li>
</ul>
</section>
<section id="version-1-12-3">
<h2>Version 1.12.3<a class="headerlink" href="#version-1-12-3" title="Permalink to this heading">#</a></h2>
<p>Date: 2022-12-06</p>
<p>The <code class="docutils literal notranslate"><span class="pre">1.12.3</span></code> release adds support for Python 3.11. Many thanks to @musicinmybrain (first contribution!) and @maximlt for contributing to this release.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Preserve existing Random seed behavior in Python 3.11 (<a class="reference external" href="https://github.com/holoviz/param/pull/638">#638</a>)</p></li>
<li><p>Add support for Python 3.11 (<a class="reference external" href="https://github.com/holoviz/param/pull/658">#658</a>)</p></li>
</ul>
</section>
<section id="version-1-12-2">
<h2>Version 1.12.2<a class="headerlink" href="#version-1-12-2" title="Permalink to this heading">#</a></h2>
<p>Date: 2022-06-14</p>
<p>The <code class="docutils literal notranslate"><span class="pre">1.12.2</span></code> release fixes a number of bugs and adds support again for Python 2.7, which was unfortunately no longer supported in the last release. Note however that Param 2.0 will still drop support of Python 2.7 as already announced. Many thanks to @Hoxbro and the maintainers @jbednar, @jlstevens, @maximlt and @philippjfr for contributing to this release.</p>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Match against complete spec name when determining dynamic watchers (<a class="reference external" href="https://github.com/holoviz/param/pull/615">#615</a>)</p></li>
<li><p>Ensure async functionality does not cause python2 syntax errors (<a class="reference external" href="https://github.com/holoviz/param/pull/624">#624</a>)</p></li>
<li><p>Allow (de)serializing <code class="docutils literal notranslate"><span class="pre">CalendarRange</span></code> and <code class="docutils literal notranslate"><span class="pre">DateRange</span></code> <code class="docutils literal notranslate"><span class="pre">Parameters</span></code> (<a class="reference external" href="https://github.com/holoviz/param/pull/625">#625</a>)</p></li>
<li><p>Improve <code class="docutils literal notranslate"><span class="pre">DateRange</span></code> validation (<a class="reference external" href="https://github.com/holoviz/param/pull/627">#627</a>)</p></li>
<li><p>Fix regression in <code class="docutils literal notranslate"><span class="pre">@param.depends</span></code> execution ordering (<a class="reference external" href="https://github.com/holoviz/param/pull/628">#628</a>)</p></li>
<li><p>Ensure <code class="docutils literal notranslate"><span class="pre">named_objs</span></code> does not fail on unhashable objects (<a class="reference external" href="https://github.com/holoviz/param/pull/632">#632</a>)</p></li>
<li><p>Support comparing date-like objects (<a class="reference external" href="https://github.com/holoviz/param/pull/629">#629</a>)</p></li>
<li><p>Fixed <code class="docutils literal notranslate"><span class="pre">BinaryPower</span></code> example in the docs to use the correct name <code class="docutils literal notranslate"><span class="pre">EvenInteger</span></code>(<a class="reference external" href="https://github.com/holoviz/param/pull/634">#634</a>)</p></li>
</ul>
</section>
<section id="version-1-12-1">
<h2>Version 1.12.1<a class="headerlink" href="#version-1-12-1" title="Permalink to this heading">#</a></h2>
<p>The 1.12.1 release fixes a number of bugs related to async callback handling when using <code class="docutils literal notranslate"><span class="pre">param.depends</span></code> and <code class="docutils literal notranslate"><span class="pre">.param.watch</span></code> and a number of documentation and error messages. Many thanks to @HoxBro and the maintainers @jbednar, @jlstevens, @maximlt and @philippjfr for contributing to this release.</p>
<p>Error handling and documentation:</p>
<ul class="simple">
<li><p>Fixed description of shared_parameters (<a class="reference external" href="https://github.com/holoviz/param/pull/568">#568</a>)</p></li>
<li><p>Improve the error messages of Date and DateRange (<a class="reference external" href="https://github.com/holoviz/param/pull/579">#579</a>)</p></li>
<li><p>Clarified step error messages and other docs and links (<a class="reference external" href="https://github.com/holoviz/param/pull/604">#604</a>)</p></li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Make iscoroutinefunction more robust (<a class="reference external" href="https://github.com/holoviz/param/pull/572">#572</a>)</p></li>
<li><p>Fix for handling misspelled parameter (<a class="reference external" href="https://github.com/holoviz/param/pull/575">#575</a>)</p></li>
<li><p>Handle None serialization for Date, CalendarDate, Tuple, Array, and DataFrame (<a class="reference external" href="https://github.com/holoviz/param/pull/582">#582</a>)</p></li>
<li><p>Support async coroutines in param.depends (<a class="reference external" href="https://github.com/holoviz/param/pull/591">#591</a>)</p></li>
<li><p>Handle async functions in depends with watch=True (<a class="reference external" href="https://github.com/holoviz/param/pull/611">#611</a>)</p></li>
<li><p>Avoid equality check on Watcher (<a class="reference external" href="https://github.com/holoviz/param/pull/612">#612</a>)</p></li>
</ul>
<p>Documentation:</p>
<ul class="simple">
<li><p>Fix binder (<a class="reference external" href="https://github.com/holoviz/param/pull/564">#564</a>)</p></li>
<li><p>Fixed description of shared_parameters (<a class="reference external" href="https://github.com/holoviz/param/pull/568">#568</a>)</p></li>
</ul>
</section>
<section id="version-1-12-0">
<h2>Version 1.12.0<a class="headerlink" href="#version-1-12-0" title="Permalink to this heading">#</a></h2>
<p>Version 1.12.0 introduces a complete user manual and website (for the first time since 2003!) along with extensive API improvements gearing up for the 2.0 release (which will be Python3 only).</p>
<p>The pre-2.0 API is still being preserved and no new warnings are added in this release, so the older API can continue to be used with this release, but the next 1.x release is expected to enable warnings for deprecated API. If you have older code using the deprecated Param features below, please update your API calls as described below to be compatible with the 2.0 release when it comes out (or pin to param<2 if you don’t need any new Param features). For new users, just use the API documented on the website, and you should be ready to go for either 1.12+ or 2.0+.</p>
<p>Thanks to James A. Bednar for the user guide and 2.0 API support, to Philipp Rudiger for improvements and new capabilities for handling dependencies on subobjects, and to Maxime Liquet and Philipp Rudiger for extensive improvements to the website/docs/package-building/testing.</p>
<p>New features:</p>
<ul class="simple">
<li><p>Added future-facing API for certain Parameterized().param methods (see Compatibility below; <a class="reference external" href="https://github.com/holoviz/param/pull/556">#556</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/558">#558</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/559">#559</a>)</p></li>
<li><p>New option <code class="docutils literal notranslate"><span class="pre">on_init=True</span></code> for <code class="docutils literal notranslate"><span class="pre">@depends</span></code> decorator, to run the method in the constructor to ensure initial state is consistent when appropriate (<a class="reference external" href="https://github.com/holoviz/param/pull/540">#540</a>)</p></li>
<li><p>Now resolves subobject dependencies dynamically, allowing dependencies on internal parameters of subobjects to resolve appropriately as those objects are replaced. (<a class="reference external" href="https://github.com/holoviz/param/pull/552">#552</a>)</p></li>
<li><p>Added prettyprinting for numbergen expressions (<a class="reference external" href="https://github.com/holoviz/param/pull/525">#525</a>)</p></li>
<li><p>Improved JSON schema generation (<a class="reference external" href="https://github.com/holoviz/param/pull/458">#458</a>)</p></li>
<li><p>Added more-usable script_repr command, availabie in param namespace, with default values, and showing imports (<a class="reference external" href="https://github.com/holoviz/param/pull/522">#522</a>)</p></li>
<li><p>Added Parameterized.param.pprint(); underlying implementation of script_repr but with defaults suitable for interactive usage rather than generating a .py script. (<a class="reference external" href="https://github.com/holoviz/param/pull/522">#522</a>)</p></li>
<li><p>Watchers can now declare precedence so that events are triggered in the desired order (<a class="reference external" href="https://github.com/holoviz/param/pull/552">#552</a>, <a class="reference external" href="https://github.com/holoviz/param/pull/557">#557</a>)</p></li>
</ul>
<p>Bug fixes:</p>