python之pip

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查看当前环境已经安装了哪些包：pip list

获取指定包的所有可用版本

生成requirements.txt

(test_venv) [work@igoodful tmp]$ pip list 
Package            Version
------------------ --------
asgiref            3.7.2
backports.zoneinfo 0.2.1
beautifulsoup4     4.9.3
bs4                0.0.1
certifi            2023.5.7
chardet            3.0.4
click              7.1.2
colorama           0.4.6
commonmark         0.9.1
Django             4.2.3
idna               2.8
pip                23.1.2
pip-search         0.0.12
pipq               0.0.2
Pygments           2.15.1
requests           2.22.0
rich               10.2.2
setuptools         56.0.0
soupsieve          2.4.1
sqlparse           0.4.4
typer              0.3.2
typing_extensions  4.7.1
urllib3            1.25.11


(test_venv) [work@igoodful tmp]$ pip freeze > requirements.txt 
(test_venv) [work@igoodful tmp]$ cat requirements.txt 
asgiref==3.7.2
backports.zoneinfo==0.2.1
beautifulsoup4==4.9.3
bs4==0.0.1
certifi==2023.5.7
chardet==3.0.4
click==7.1.2
colorama==0.4.6
commonmark==0.9.1
Django==4.2.3
idna==2.8
pip-search==0.0.12
pipq==0.0.2
Pygments==2.15.1
requests==2.22.0
rich==10.2.2
soupsieve==2.4.1
sqlparse==0.4.4
typer==0.3.2
typing_extensions==4.7.1
urllib3==1.25.11