如何找到对python包的反向依赖 [英] How to find reverse dependency on python package

问题描述

我有一个虚拟环境，其中安装了 elasticsearch python软件包。

I have one virtual environment, where elasticsearch python package was installed.

我要查找的哪个软件包依赖 elasticsearch 并在虚拟环境中进行了安装。

I want to find, which package has dependency on elasticsearch and did installation in virtual environment.

(.venv)root@test:~# pip freeze | grep elast
elasticsearch==1.4.0.dev0

我尝试了显示带有pip的反向依赖项吗？但不起作用

(.venv)root@test:~# python
Python 2.7.8 (default, Oct 18 2014, 12:50:18)
[GCC 4.9.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pip
>>> package_name = 'elasticsearch'
>>> rev_dep = [pkg.project_name for pkg in pip.get_installed_distributions() if package_name in [requirement.project_name for requirement in pkg.requires()]]
>>> rev_dep
[]
>>>

模块返回虚拟环境路径的路径。

Path of module return virtual env path.

(.venv)root@test:~# python -c 'import elasticsearch; print elasticsearch.__path__'
['/opt/venvs/.venv/local/lib/python2.7/site-packages/elasticsearch']

我怀疑 elasticsearch debian软件包是否可以安装此python软件包，但不确定。

I have doubt that elasticsearch debian package might be installed this python package, but not sure.

(.venv)root@test:~# dpkg -l | grep elast
ii  elasticsearch                        1.2.0                           all          Open Source, Distributed, RESTful Search Engine

推荐答案

步骤1.找到您的virtualenv的站点软件包目录：

请注意我的shell提示符显示 venv38

Step 1. find your site-packages directory for your virtualenv:

Note my shell prompt showing venv38 and the egrep at the end.

（venv38）myuser @ foo $ python -m site | egrep venv38

site.py模块包含各种有趣的信息，但我们只对venv的站点包感兴趣。

The site.py module has all sorts of interesting info, but we are only interested in the venv's site-package.

'/Users/myuser/kds2/py2/venv38/lib/python3.8/site-packages',

步骤2。在 * dist-info / METADATA 文件

更改为您在上面找到的site-packages目录。

Step 2. look for dependencies in the *dist-info/METADATA files

change to the site-packages directory you found above.

我正在寻找谁正在使用漂白剂而不是 elasticsearch

I am looking for who is using bleach rather than elasticsearch

cd /Users/myuser/kds2/py2/venv38/lib/python3.8/site-packages

find . -name METADATA -exec grep -H -i bleach {} \; | grep Requires-Dist

注意：尽管这里不必担心，但<$ c包名称中的$ c>-或 _ 可能会影响grep的编写方式。

Note: although it's not necessary to worry about it here, characters like - or _ in the package name may affect how the grep should be written.

./readme_renderer-24.0.dist-info/METADATA:Requires-Dist: bleach (>=2.1.0)

因此， readme_renderer 是这种依赖性的源头。

So, the readme_renderer is what is pulling in this dependency.

请注意使用 find。 -name METADATA -exec grep -H要求-Dist {} \; | grep bleach ，即在Requires-Dist和您搜索的包之间交换grep序列的效果不佳，因为在我的情况下，它显示了很多 bleach 自己的依赖项。

Note using find . -name METADATA -exec grep -H Requires-Dist {} \; | grep bleach i.e. interchanging the grep sequence between Requires-Dist and your searched-for package doesn't work as well, as, in my case, it showed a lot of bleachs own dependencies.

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