检查是否已在“可编辑"(egg-link)模式下安装了 python 包? [英] Check whether a python package has been installed in 'editable' (egg-link) mode or not?

问题描述

有没有什么办法可以检查Python包是否正常安装(pip install/setup.py install)或可编辑/egg-link模式(<代码>pip install -e/setup.py develop)?

Is there any way to check whether a Python package has been installed normally (pip install / setup.py install) or in editable/egg-link mode (pip install -e / setup.py develop)?

我知道我可以检查包的路径是否包含 site-packages 这很可能意味着它是一个不可编辑"的安装，但这感觉非常脏，我宁愿避免这种情况.

I know I could check whether the path to the package contains site-packages which would most likely mean it's a "non-editable" install, but this feels extremely dirty and I would rather avoid this.

我尝试检查的原因是我的应用程序正在检查各个位置的配置文件，例如 /etc/myapp.conf 和 ~/.myapp.conf.对于开发人员，我想签入 <pkgdir>/myapp.conf 但由于我显示了可能的位置列表，以防找不到配置，我真的不想包含 pkgdir包已安装到站点包时的选项(因为用户不应在其中创建配置文件).

The reason I'm trying to check this is that my application is checking for config files in various places, such as /etc/myapp.conf and ~/.myapp.conf. For developers I'd like to check in <pkgdir>/myapp.conf but since I show the list of possible locations in case no config was found, I really don't want to include the pkgdir option when the package has been installed to site-packages (since users should not create a config file in there).

推荐答案

pip 包含 code(它被 pip freeze 用来在行前加上 -e).由于pip的API不能保证稳定，所以最好把代码复制到自己的应用中，而不是从pip中导入:

pip contains code for this (it's used by pip freeze to prefix the line with -e). Since pip's API is not guaranteed to be stable, it's best to copy the code into the own application instead of importing it from pip:

def dist_is_editable(dist):
    """Is distribution an editable install?"""
    for path_item in sys.path:
        egg_link = os.path.join(path_item, dist.project_name + '.egg-link')
        if os.path.isfile(egg_link):
            return True
    return False

该代码已获得 MIT 许可，因此可以安全地复制和粘贴到几乎任何项目中.

The code is MIT-licensed so it should be safe to copy&paste into pretty much any project.

这篇关于检查是否已在“可编辑"(egg-link)模式下安装了 python 包?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！