問題：
I recently learned how to use virtualenv and virtualenvwrapper in my workflow but I've seen pyenv mentioned in a few guides but I can't seem to get an understanding of what pyenv is and how it is different/similar to virtualenv.我最近學習瞭如何在我的工作流程中使用 virtualenv 和 virtualenvwrapper，但我在一些指南中看到了 pyenv，但我似乎無法理解 pyenv 是什麼以及它與 virtualenv 有何不同/相似之處。 Is pyenv a better/newer replacement for virtualenv or a complimentary tool? pyenv 是 virtualenv 的更好/更新替代品還是免費工具？ If the latter what does it do differently and how do the two (and virtualenvwrapper if applicable) work together?如果後者有什麼不同，兩者（和 virtualenvwrapper，如果適用）如何協同工作？
解決方案：
參考一： https://en.stackoom.com/question/21fRM參考二： https://stackoom.com/question/21fRM