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虚拟环境 ​

创建虚拟环境 ​

shell
python -m venv flask-env

指定python版本,比如 /usr/local/bin/python3 对应的版本是3.10.9

会出现一个名为flask-env的子目录，这里就是一个全新的虚拟环境，包含Python解释器

shell
wangxiaomin@wxmgcs-3 flask-env % tree -L 2
.
├── bin
│   ├── Activate.ps1
│   ├── activate
│   ├── activate.csh
│   ├── activate.fish
│   ├── pip
│   ├── pip3
│   ├── pip3.10
│   ├── python -> /Users/wangxiaomin/opt/anaconda3/envs/py310/bin/python
│   ├── python3 -> python
│   └── python3.10 -> python
├── include
├── lib
│   └── python3.10
└── pyvenv.cfg

4 directories, 11 files

查看虚拟环境配置 ​

% cat pyvenv.cfg
home = /Users/wangxiaomin/opt/anaconda3/envs/py310/bin
include-system-site-packages = false
version = 3.10.16

进入虚拟环境 ​

shell
source flask-env/bin/activate

退出环境 ​

shell
deactivate

删除虚拟环境 ​

shell
rm -rf flask-env

安装Flask ​

shell
pip install flask

查看安装包 ​

shell
(flask-env) (base) wangxiaomin@wxmgcs-3 flask-env % pip freeze
blinker==1.9.0
click==8.1.8
Flask==3.1.0
itsdangerous==2.2.0
Jinja2==3.1.5
MarkupSafe==3.0.2
Werkzeug==3.1.3
(flask-env) (base) wangxiaomin@wxmgcs-3 flask-env % pip list
Package      Version
------------ -------
blinker      1.9.0
click        8.1.8
Flask        3.1.0
itsdangerous 2.2.0
Jinja2       3.1.5
MarkupSafe   3.0.2
pip          23.0.1
setuptools   65.5.0
Werkzeug     3.1.3

[notice] A new release of pip is available: 23.0.1 -> 24.3.1
[notice] To update, run: pip install --upgrade pip