<div dir="ltr"><a href="https://library.oreilly.com/book/0636920042921/the-hitchhikers-guide-to-python/6.xhtml?ref=toc#subsection.virtualenv">https://library.oreilly.com/book/0636920042921/the-hitchhikers-guide-to-python/6.xhtml?ref=toc#subsection.virtualenv</a><br></div>