pipreqs导出当前项目的所有组件及其版本

pipreqs介绍

最近写完的自动化脚本,分享给同事的时候发现依赖包很难解决(使用的不是virtualenv环境)。想起来之前看开源接口平台项目的时候可以一键下载依赖包,于是就找到了第三方包pipreqs,可以自动帮助我们自动生成requirements.txt

这是个很受欢迎的用于管理项目中依赖库的工具,可以用“pip install pipreqs”命令来安装。它的主要特点有:

  • 搜索依赖库的范围是基于目录的方式,很有针对性
  • 搜索的依据是脚本中所 import 的内容
  • 可以在未安装依赖库的环境上生成依赖文件
  • 查找软件包信息时,可以指定查询方式(只在本地查询、在 PyPi 查询、或者在自定义的 PyPi 服务)

第一步:

下载pipreqs工具包(pip install pipreqs)

Microsoft Windows [版本 10.0.17134.1069]
(c) 2018 Microsoft Corporation。保留所有权利。
C:Userswy.DESKTOP-KENPKKPDesktopDingdadingAPI>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:

切换到项目路径下,生成依赖包的txt文档(pipreqs ./ --encoding=utf8)

期间遇到报错:编码错误(UnicodeDecodeError: 'gbk' codec can't decode byte 0x95 in position 40)

C:Userswy.DESKTOP-KENPKKPDesktopDingdadingAPI>pipreqs ./
Traceback (most recent call last):
File "c:userswy.desktop-kenpkkpappdatalocalprogramspythonpython36lib
unpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
......
extra_ignore_dirs=extra_ignore_dirs)
File "c:userswy.desktop-kenpkkpappdatalocalprogramspythonpython36libsite-packagespipreqspipreqs.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

找到原因是因为在Windows下需要制定编码方式为:uft-8,操作如下

C:Userswy.DESKTOP-KENPKKPDesktopDingdadingAPI>pipreqs ./ --encoding=utf8
INFO: Successfully saved requirements file in ./requirements.txt

第三步:

查看需要的依赖包(type requirements.txt)

C:Userswy.DESKTOP-KENPKKPDesktopDingdadingAPI>type  requirements.txt
requests==2.18.4
xlutils==2.0.0
xmltodict==0.12.0
xlrd==1.2.0
dicttoxml==1.7.4

下载依赖包方法(pip install -r requriements.txt)

C:Userswy.DESKTOP-KENPKKPDesktopDingdadingAPI>pip install -r  requirements.txt
Requirement already satisfied: requests==2.18.4 in c:userswy.desktop-kenpkkpappdatalocalprogramspythonpython36libsite-p
ackages (from -r requirements.txt (line 1)) (2.18.4)
Requirement already satisfied: xlutils==2.0.0 in c:userswy.desktop-kenpkkpappdatalocalprogramspythonpython36libsite-pac
kages (from -r requirements.txt (line 2)) (2.0.0)
Requirement already satisfied: xmltodict==0.12.0 in c:userswy.desktop-kenpkkpappdatalocalprogramspythonpython36libsite-
packages (from -r requirements.txt (line 3)) (0.12.0)
Requirement already satisfied: xlrd==1.2.0 in

基本的命令选项如下:

Usage:
    pipreqs [options] <path>

Options:
    --use-local           Use ONLY local package info instead of querying PyPI
    --pypi-server <url>   Use custom PyPi server
    --proxy <url>         Use Proxy, parameter will be passed to requests library. You can also just set the
                          environments parameter in your terminal:
                          $ export HTTP_PROXY="http://10.10.1.10:3128"
                          $ export HTTPS_PROXY="https://10.10.1.10:1080"
    --debug               Print debug information
    --ignore <dirs>...    Ignore extra directories
    --encoding <charset>  Use encoding parameter for file open
    --savepath <file>     Save the list of requirements in the given file
    --print               Output the list of requirements in the standard output
    --force               Overwrite existing requirements.txt
    --diff <file>         Compare modules in requirements.txt to project imports.
    --clean <file>        Clean up requirements.txt by removing modules that are not imported in project.

其中需注意,很可能遇到编码错误:UnicodeDecodeError: 'gbk' codec can't decode byte 0xae in 。需要指定编码格式“--encoding=utf8”。

在已生成依赖文件“requirements.txt”的情况下,它可以强行覆盖、比对差异以及清除不再使用的依赖项。

原文地址:https://www.cnblogs.com/tu240302975/p/13524313.html