<p>PhD in Mathematics.</p>
<p>Self-taught Python since August 2022. And self-taught R since much longer.</p>
<p>Please, do not hesitate to comment on everything I write here on SO. I am always open to and accept constructive criticism, suggestions and better ways of doing things.</p>
<p>In case you downvote one answer of mine, please explain why, to let my learning to be improved. I do not <em>really</em> care about my StackOverflow reputation, since it is <em>inconsequential</em>, as I am very self-confident and have a good, exciting and permanent job -- my single goal is to <em>learn</em> and <em>help</em> others.</p>
<p>If my answers helped you, please ponder to <a href="https://www.buymeacoffee.com/ps1969" rel="nofollow noreferrer">buy me a coffee</a> </p>
<p>Thanks!</p>

PaulS