最近寫完的自動化腳本，分享給同事的時候發現依賴包很難解決（使用的不是virtualenv環境）。想起來之前看開源接口平台項目的時候可以一鍵下載依賴包，於是就找到了第三方包pipreqs，可以自動幫助我們自動生成requirements.txt
- github原文介紹：pipreqs-根據任何項目的導入生成pip requirements.txt文件
- 鏈接:https://github.com/bndr/pipreqs
第一步：下載pipreqs工具包（pip install pipreqs）
Microsoft Windows [版本 10.0.17134.1069]
(c) 2018 Microsoft Corporation。保留所有權利。
C:\Users\wy.DESKTOP-KENPKKP\Desktop\Dingda\dingAPI>pip install pipreqs
Collecting pipreqs
Downloading https://files.pythonhosted.org/packages/f8/8d/2e7c15bc5fcab54f9c5b404b5668fdac65f5e3224b2116097fae1299fc98/pipreqs
-0.4.9-py2.py3-none-any.whl
Collecting docopt
Downloading https://files.pythonhosted.org/packages/a2/55/8f8cab2afd404cf578136ef2cc5dfb50baa1761b68c9da1fb1e4eed343c9/docopt-
0.6.2.tar.gz
Collecting yarg
Downloading https://files.pythonhosted.org/packages/8b/90/89a2ff242ccab6a24fbab18dbbabc67c51a6f0ed01f9a0f41689dc177419/yarg-0.
1.9-py2.py3-none-any.whl
Installing collected packages: docopt, yarg, pipreqs
Running setup.py install for docopt ... done
Successfully installed docopt-0.6.2 pipreqs-0.4.9 yarg-0.1.9
第二步：切換到項目路徑下，生成依賴包的txt文檔（pipreqs ./ --encoding=utf8）
期間遇到報錯：編碼錯誤（UnicodeDecodeError: 'gbk' codec can't decode byte 0x95 in position 40）
C:\Users\wy.DESKTOP-KENPKKP\Desktop\Dingda\dingAPI>pipreqs ./
Traceback (most recent call last):
File "c:\users\wy.desktop-kenpkkp\appdata\local\programs\python\python36\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
......
extra_ignore_dirs=extra_ignore_dirs)
File "c:\users\wy.desktop-kenpkkp\appdata\local\programs\python\python36\lib\site-packages\pipreqs\pipreqs.py", line 75, in ge
t_all_imports
contents = f.read()
UnicodeDecodeError: 'gbk' codec can't decode byte 0x95 in position 40: illegal multibyte sequence
找到原因是因為在Windows下需要制定編碼方式為：uft-8，操作如下
C:\Users\wy.DESKTOP-KENPKKP\Desktop\Dingda\dingAPI>pipreqs ./ --encoding=utf8
INFO: Successfully saved requirements file in ./requirements.txt
第三步：查看需要的依賴包（type requirements.txt）
C:\Users\wy.DESKTOP-KENPKKP\Desktop\Dingda\dingAPI>type requirements.txt
requests==2.18.4
xlutils==2.0.0
xmltodict==0.12.0
xlrd==1.2.0
dicttoxml==1.7.4
下載依賴包方法（pip install -r requriements.txt）
C:\Users\wy.DESKTOP-KENPKKP\Desktop\Dingda\dingAPI>pip install -r requirements.txt
Requirement already satisfied: requests==2.18.4 in c:\users\wy.desktop-kenpkkp\appdata\local\programs\python\python36\lib\site-p
ackages (from -r requirements.txt (line 1)) (2.18.4)
Requirement already satisfied: xlutils==2.0.0 in c:\users\wy.desktop-kenpkkp\appdata\local\programs\python\python36\lib\site-pac
kages (from -r requirements.txt (line 2)) (2.0.0)
Requirement already satisfied: xmltodict==0.12.0 in c:\users\wy.desktop-kenpkkp\appdata\local\programs\python\python36\lib\site-
packages (from -r requirements.txt (line 3)) (0.12.0)
Requirement already satisfied: xlrd==1.2.0 in
附帶pipreqs詳細用法
gitbug地址：https://github.com/bndr/pipreqs
- 用法：
-
pipreqs [選項] <路徑> - 選項：
- use-local僅使用本地軟件包信息，而不是查詢PyPI
- pypi-server
使用自定義PyPi服務器 - proxy
使用代理，參數將傳遞到請求庫。您也可以只設置終端中的environment參數： - $ export HTTP_PROXY =“ http://10.10.1.10:3128”
- $ export HTTPS_PROXY =“ https://10.10.1.10:1080”
- debug打印調試信息
- ignore <目錄> ...忽略多余的目錄
- encoding
使用encoding參數打開文件 - savepath <文件>將需求列表保存在給定文件中
- print在標准輸出中輸出需求列表
- force覆蓋現有的requirements.txt
- clean <文件>通過刪除項目中未導入的模塊來清理requirements.txt。