python的包管理

获取现有项目有那些依赖

安装pipreqs
pip install pipreqs

在项目根目录执行
pipreqs . --encoding=utf8 --force --pypi-server=http://mirrors.aliyun.com/pypi/simple/
根据生成文件安装依赖
pip install -r requirements.txt

pipreqs命令选项

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.
    --no-pin              Omit version of output packages.