<p dir="auto">The SciPy documentation <a href="https://docs.scipy.org/doc/" rel="nofollow">site</a> does not load securely (in Google Chrome) due to mixed content (HTTPS vs HTTP). This seems to have been resolved in the Sphinx repo in this <a href="https://github.com/sphinx-doc/sphinx/commit/f9250e198b5dab4ab9ff9a489ffdf723d873451c#diff-efa15804d6baa4dbab13c1d4788865c1">commit</a> and in the SciPy Sphinx Theme repo in this <a href="https://github.com/scipy/scipy-sphinx-theme/commit/0eaef7ac75f6181c5b8d6f6608a46688fcf202ed#diff-d92810ca57a19738154e282c2426f6f1">commit</a>. However, it doesn't appear that the doc site has been updated with these changes.</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/714528/41494082-6a9ff910-70c3-11e8-97a4-88dc0cb7facf.png"><img src="https://user-images.githubusercontent.com/714528/41494082-6a9ff910-70c3-11e8-97a4-88dc0cb7facf.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto">I couldn't find another issue with this, but if I overlooked it, feel free to refer me to the duplicate. Thanks.</p>
<h3 dir="auto">Is your feature request related to a problem? Please describe.</h3>
<p dir="auto"><em>No response</em></p>
<h3 dir="auto">Describe the solution you'd like.</h3>
<p dir="auto">I would like to be able to access the objective function value at each iteration of the differential_evolution algorithm provided in scipy.optimize. This is currently not available in the callback method.</p>
<h3 dir="auto">Describe alternatives you've considered.</h3>
<p dir="auto">I have considered evaluating the function given the parameters value xk (which is available in the callback method). Unfortunately, this means I need to reevaluate the objective function, which in my case is prohibitive because the objective is very expensive to evaluate.</p>
<h3 dir="auto">Additional context (e.g. screenshots, GIFs)</h3>
<p dir="auto"><em>No response</em></p>