title: Specific reasons to favor pip vs. conda when installing Python packages
body: <p>I use miniconda as my default python installation. What is the current (2019) wisdom regarding when to install something with conda vs. pip?</p>
  
  <p>My usual behavior is to install everything with pip, and only using conda if a package is not available through pip or the pip version doesn't work correctly.</p>
  
  <p>Are there advantages to always favoring <code>conda install</code>? Are there issues associated with mixing the two installers? What factors should I be considering?</p>
  
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  <p><em>OBJECTIVITY:</em> This is not an opinion-based question! My question is when I have the option to install a python package with <code>pip</code> or <code>conda</code>, how do I make an informed decision? Not "tell me which is better, but <strong>"<em>Why</em> would I use one over the other, and will oscillating back &amp; forth cause problems / inefficiencies?"</strong></p>