点冻结和依赖顺序 [英] pip freeze and order of dependencies

问题描述

`pip freeze > requirements.txt` 

自动按照明显的字母顺序写我的依赖项，如下所示:-

automatically writes my dependencies in an apparently alphabetically order, like this:-

matplotlib==1.2.0
numpy==1.6.2
pandas==0.9.1

此问题是pip install -r requirements.txt(当我部署其代码在requirements.txt中列出的依赖项时)将最终失败，因为matplotlib首先需要安装numpy.

The problem with this is that pip install -r requirements.txt (when I deploy my code with its dependencies listed in requirements.txt) will end up failing because matplotlib needs numpy to be installed first.

当我pip freeze时，如何确保matplotlib在requirements.txt文件中的后 numpy中列出?

How can I ensure that matplotlib is listed after numpy in the requirements.txt file when I pip freeze it?

推荐答案

对于您而言，这并不重要，因为pip会构建每个需求(针对每个需求调用python setup.py egg_info)，然后全部安装它们.对于您的具体情况，这无关紧要，因为在构建matplotlib时当前需要安装numpy.

For your case it does not matter, because pip builds every requirements (calling python setup.py egg_info for each) and then install them all. For your specific case, it does not matter, because numpy is currently required to be installed while building matplotlib.

这是matplotlib的问题，他们创建了一个解决方案: https ://github.com/matplotlib/matplotlib/wiki/MEP11

It is a problem with matplotlib, and they created a proposal to fix it: https://github.com/matplotlib/matplotlib/wiki/MEP11

请在pip问题跟踪器中查看有关此问题的评论: https://github.com/pypa /pip/issues/25

See comments from this issue at pip issue tracker: https://github.com/pypa/pip/issues/25

此问题与在virtualenv中安装pip的Matplotlib要求重复

This question is a duplicate of Matplotlib requirements with pip install in virtualenv.

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