如何在 MacOS 上正确安装和 运行 virtualenv
How to install and run virtualenv on MacOS correctly
你好我是python的初学者,我不记得我什么时候以及如何在我的Macbook air上安装python3.8,只知道安装路径:
% which python
/usr/bin/python
% which python3
/usr/local/bin/python3
找不到pip命令,但是pip3是可以的。今天我要安装virtaulenv:
% sudo -H pip3 install virtualenv
WARNING: Ignoring invalid distribution - (/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages)
Successfully installed virtualenv-20.6.0
我可以使用“pip3 show virtualenv”来了解信息:
% pip3 show virtualenv
Name: virtualenv
Version: 20.6.0
Summary: Virtual Python Environment builder
Home-page: https://virtualenv.pypa.io/
Author: Bernat Gabor
Author-email: gaborjbernat@gmail.com
License: MIT
Location: /Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages
Requires: six, platformdirs, backports.entry-points-selectable, distlib, filelock
Required-by:
但是当我使用“virtualenv”时,我收到命令未找到消息,然后我“pip3 卸载”它。我搜索了这个并得到了使用“easy_install”安装 virtualenv 的提示。安装后我可以执行命令,但收到一些错误消息:
% virtualenv
Traceback (most recent call last):
File "/usr/local/bin/virtualenv", line 6, in <module>
from pkg_resources import load_entry_point
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 3241, in <module>
@_call_aside
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 3225, in _call_aside
f(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 3254, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 583, in _build_master
ws.require(__requires__)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 900, in require
needed = self.resolve(parse_requirements(requirements))
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 786, in resolve
raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'importlib-resources>=1.0' distribution was not found and is required by virtualenv
好像不行,我尝试“sudo pip3 uninstall virtualenv”卸载成功,但似乎并没有真正被删除:
% which virtualenv
/usr/local/bin/virtualenv
我不知道这个,你能帮我吗?我只想正常 运行 virtualenv 并创建 flask 项目 ...
PS。我可以“sudo pip3 install flask”和“pip3 show flask”,但仍然无法 运行 flask cammand(未找到命令),我该怎么办?
非常感谢!
尝试在您正在使用的 python 版本中明确说明并使用 -m pip
安装
python3 -m pip install virtualenv
python3 -m virtualenv venv # create a new venv in ./venv
source ./venv/bin/activate # activate your new venv
通常 pip/pip3 并没有指向您认为正在使用的 python 版本...通过使用此技术,您肯定会使用正确的 python和 pip
你好我是python的初学者,我不记得我什么时候以及如何在我的Macbook air上安装python3.8,只知道安装路径:
% which python
/usr/bin/python
% which python3
/usr/local/bin/python3
找不到pip命令,但是pip3是可以的。今天我要安装virtaulenv:
% sudo -H pip3 install virtualenv
WARNING: Ignoring invalid distribution - (/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages)
Successfully installed virtualenv-20.6.0
我可以使用“pip3 show virtualenv”来了解信息:
% pip3 show virtualenv
Name: virtualenv
Version: 20.6.0
Summary: Virtual Python Environment builder
Home-page: https://virtualenv.pypa.io/
Author: Bernat Gabor
Author-email: gaborjbernat@gmail.com
License: MIT
Location: /Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages
Requires: six, platformdirs, backports.entry-points-selectable, distlib, filelock
Required-by:
但是当我使用“virtualenv”时,我收到命令未找到消息,然后我“pip3 卸载”它。我搜索了这个并得到了使用“easy_install”安装 virtualenv 的提示。安装后我可以执行命令,但收到一些错误消息:
% virtualenv
Traceback (most recent call last):
File "/usr/local/bin/virtualenv", line 6, in <module>
from pkg_resources import load_entry_point
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 3241, in <module>
@_call_aside
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 3225, in _call_aside
f(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 3254, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 583, in _build_master
ws.require(__requires__)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 900, in require
needed = self.resolve(parse_requirements(requirements))
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 786, in resolve
raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'importlib-resources>=1.0' distribution was not found and is required by virtualenv
好像不行,我尝试“sudo pip3 uninstall virtualenv”卸载成功,但似乎并没有真正被删除:
% which virtualenv
/usr/local/bin/virtualenv
我不知道这个,你能帮我吗?我只想正常 运行 virtualenv 并创建 flask 项目 ...
PS。我可以“sudo pip3 install flask”和“pip3 show flask”,但仍然无法 运行 flask cammand(未找到命令),我该怎么办?
非常感谢!
尝试在您正在使用的 python 版本中明确说明并使用 -m pip
安装
python3 -m pip install virtualenv
python3 -m virtualenv venv # create a new venv in ./venv
source ./venv/bin/activate # activate your new venv
通常 pip/pip3 并没有指向您认为正在使用的 python 版本...通过使用此技术,您肯定会使用正确的 python和 pip