How do I install python software using pyenv?

[hoodedvul]

Also see:
pyenv help
How do I install the python multiple version management tool pyenv?

pyenv is used to manage multiple versions of python.

Install version 2.7.18 of python. If the -v is omitted, it is like quiet mode.

$ pyenv install -v 2.7.18
/tmp/python-build.20201007085833.4389 ~/demo_env
Downloading Python-2.7.18.tar.xz...
-> https://www.python.org/ftp/python/2.7.18/Python-2.7.18.tar.xz
...
...
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