python - pyenv: 没有这样的命令 `virtualenv'

Question

我正在关注 tutorial在 ubuntu 20.04 上设置火炬时，一行需要设置 pyenv这就像 python 的 virtualenv，所以我可以运行多个版本的 python。有点不必要，但这是一个学习过程，也是学习另一天我可能会使用的另一种新工具的好机会。
所以这个命令在成功设置 pyenv 后失败了

sam@sam:~/torch$ pyenv virtualenv 3.8.2 torch
pyenv: no such command `virtualenv'

所以为了涵盖我的基础知识，我已经安装了 virtualenv，如下所示

sam@sam:~/torch$ virtualenv
usage: virtualenv [--version] [--with-traceback] [-v | -q] [--app-data APP_DATA] [--clear-app-data] [--discovery {builtin}] [-p py] [--creator {builtin,cpython3-posix,venv}] [--seeder {app-data,pip}] [--no-seed]
                [--activators comma_sep_list] [--clear] [--system-site-packages] [--symlinks | --copies] [--download | --no-download] [--extra-search-dir d [d ...]] [--progress version] [--retrying version] [--urllib3 version]
                [--pep517 version] [--colorama version] [--CacheControl version] [--certifi version] [--requests version] [--contextlib2 version] [--appdirs version] [--chardet version] [--pytoml version] [--html5lib version]
                [--lockfile version] [--six version] [--webencodings version] [--pyparsing version] [--setuptools version] [--packaging version] [--wheel version] [--ipaddr version] [--idna version] [--pip version] [--distro version]
                [--pkg_resources version] [--distlib version] [--msgpack version] [--no-progress] [--no-retrying] [--no-urllib3] [--no-pep517] [--no-colorama] [--no-CacheControl] [--no-certifi] [--no-requests] [--no-contextlib2]
                [--no-appdirs] [--no-chardet] [--no-pytoml] [--no-html5lib] [--no-lockfile] [--no-six] [--no-webencodings] [--no-pyparsing] [--no-setuptools] [--no-packaging] [--no-wheel] [--no-ipaddr] [--no-idna] [--no-pip] [--no-distro]
                [--no-pkg_resources] [--no-distlib] [--no-msgpack] [--symlink-app-data] [--prompt prompt] [-h]
                dest
virtualenv: error: the following arguments are required: dest

并且 pyenv 已安装，如下所示

sam@sam:~/torch$ pyenv
pyenv 1.2.19-1-gece59ca8
Usage: pyenv <command> [<args>]

Some useful pyenv commands are:
commands    List all available pyenv commands
exec        Run an executable with the selected Python version
global      Set or show the global Python version(s)
help        Display help for a command
hooks       List hook scripts for a given pyenv command
init        Configure the shell environment for pyenv
install     Install a Python version using python-build
local       Set or show the local application-specific Python version(s)
prefix      Display prefix for a Python version
rehash      Rehash pyenv shims (run this after installing executables)
root        Display the root directory where versions and shims are kept
shell       Set or show the shell-specific Python version
shims       List existing pyenv shims
uninstall   Uninstall a specific Python version
--version   Display the version of pyenv
version     Show the current Python version(s) and its origin
version-file   Detect the file that sets the current pyenv version
version-name   Show the current Python version
version-origin   Explain how the current Python version is set
versions    List all Python versions available to pyenv
whence      List all Python versions that contain the given executable
which       Display the full path to an executable

See `pyenv help <command>' for information on a specific command.
For full documentation, see: https://github.com/pyenv/pyenv#readme

Answer 1

这在您评论下的线程中进行了讨论，但您需要 pyenv-virtualenv。
下载方式:https://github.com/pyenv/pyenv-virtualenv
简单的方法是通过 Mac 上的自制软件 brew install pyenv-virtualenv