• 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。

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