pyenv：沒有這樣的命令“virtualenv”

Question

我正在關注關於在 ubuntu 20.04 上設置 Torch 的教程，一行需要設置pyenv ，這就像 python 的 virtualenv，所以我可以運行多個版本的 python。 有點不必要，但這是一個學習過程，也是學習另一種我可能改天使用的新工具的好機會。

所以成功設置pyenv后這個命令失敗

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

所以為了涵蓋我的基礎知識，我已經安裝了 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

並安裝了 pyenv，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

這在您評論下的線程中進行了討論，但您需要 pyenv-virtualenv。

下載方式： https://github.com/pyenv/pyenv-virtualenv

簡單的方法是通過 mac 上的自制軟件brew install pyenv-virtualenv