[Python自学] requirements批量安装依赖

一、从开发环境导出依赖

在虚拟环境中运行命令：

(venv_1) [root@centos-venv-fb ~]# pip3 freeze > ~/requirements.txt

可以将当前虚拟环境的所有依赖包导入到requirements.txt文件中。

(venv_1) [root@centos-venv-fb ~]# cat requirements.txt 
Django==2.2.8
pytz==2019.3
sqlparse==0.3.0
beautifulsoup4==4.6.3
h5py==2.8.0
djangorestframework==3.11.0
redis==3.3.11
uWSGI==2.0.18

二、在发布环境安装所有依赖

进入发布虚拟环境：

[root@centos-venv-fb ~]# workon venv_fb
(venv_fb) [root@centos-venv-fb ~]# 

查看当前已安装依赖列表：

(venv_fb) [root@centos-venv-fb ~]# pip3 list
Package    Version
---------- -------
pip        20.0.2 
setuptools 45.1.0 
wheel      0.34.1 

安装requirements.txt中的依赖：

(venv_fb) [root@centos-venv-fb ~]# pip3 install -i https://pypi.douban.com/simple/ -r requirements.txt
Looking in indexes: https://pypi.douban.com/simple/
Collecting Django==2.2.8
  Using cached https://pypi.doubanio.com/packages/d3/d0/ef75c788627f4218a8d08dccdf4ebc91f5b83c48d09ec8f2a3db9610014b/Django-2.2.8-py3-none-any.whl (7.5 MB)
Collecting pytz==2019.3
  Downloading https://pypi.doubanio.com/packages/e7/f9/f0b53f88060247251bf481fa6ea62cd0d25bf1b11a87888e53ce5b7c8ad2/pytz-2019.3-py2.py3-none-any.whl (509 kB)
     |████████████████████████████████| 509 kB 1.7 MB/s 
Collecting sqlparse==0.3.0
  Downloading https://pypi.doubanio.com/packages/ef/53/900f7d2a54557c6a37886585a91336520e5539e3ae2423ff1102daf4f3a7/sqlparse-0.3.0-py2.py3-none-any.whl (39 kB)
Collecting beautifulsoup4==4.6.3
  Downloading https://pypi.doubanio.com/packages/21/0a/47fdf541c97fd9b6a610cb5fd518175308a7cc60569962e776ac52420387/beautifulsoup4-4.6.3-py3-none-any.whl (90 kB)
     |████████████████████████████████| 90 kB 2.7 MB/s 
Collecting h5py==2.8.0
  Using cached https://pypi.doubanio.com/packages/4f/3f/724834613239667a92d3b8b6b8fdef1c93d6f57d008cacc46e6b9ebdc486/h5py-2.8.0-cp37-cp37m-manylinux1_x86_64.whl (2.8 MB)
Collecting djangorestframework==3.11.0
  Downloading https://pypi.doubanio.com/packages/be/5b/9bbde4395a1074d528d6d9e0cc161d3b99bd9d0b2b558ca919ffaa2e0068/djangorestframework-3.11.0-py3-none-any.whl (911 kB)
     |████████████████████████████████| 911 kB 24.0 MB/s 
Collecting redis==3.3.11
  Downloading https://pypi.doubanio.com/packages/32/ae/28613a62eea0d53d3db3147f8715f90da07667e99baeedf1010eb400f8c0/redis-3.3.11-py2.py3-none-any.whl (66 kB)
     |████████████████████████████████| 66 kB 9.9 MB/s 
Processing ./.cache/pip/wheels/53/be/45/34e8f5c0fa3dafd17e4c34b2d048ffc82a5abc6910eed34929/uWSGI-2.0.18-cp37-cp37m-linux_x86_64.whl
Collecting six
  Downloading https://pypi.doubanio.com/packages/65/eb/1f97cb97bfc2390a276969c6fae16075da282f5058082d4cb10c6c5c1dba/six-1.14.0-py2.py3-none-any.whl (10 kB)
Collecting numpy>=1.7
  Downloading https://pypi.doubanio.com/packages/63/0c/0261693cc3ad8e2b66e66dc2d2676a2cc17d3efb1c58a70db73754320e47/numpy-1.18.1-cp37-cp37m-manylinux1_x86_64.whl (20.1 MB)
     |████████████████████████████████| 20.1 MB 4.4 MB/s 
Installing collected packages: pytz, sqlparse, Django, beautifulsoup4, six, numpy, h5py, djangorestframework, redis, uWSGI
Successfully installed Django-2.2.8 beautifulsoup4-4.6.3 djangorestframework-3.11.0 h5py-2.8.0 numpy-1.18.1 pytz-2019.3 redis-3.3.11 six-1.14.0 sqlparse-0.3.0 uWSGI-2.0.18

再次查看安装好的依赖：

(venv_fb) [root@centos-venv-fb ~]# pip3 list
Package             Version
------------------- -------
beautifulsoup4      4.6.3  
Django              2.2.8  
djangorestframework 3.11.0 
h5py                2.8.0  
numpy               1.18.1 
pip                 20.0.2 
pytz                2019.3 
redis               3.3.11 
setuptools          45.1.0 
six                 1.14.0 
sqlparse            0.3.0  
uWSGI               2.0.18 
wheel               0.34.1 

☿