为什么我无法通过手动 *python setup.py install* 获得 *pip install* 的确切结果? [英] How come I can't get the exactly result to *pip install* by manually *python setup.py install*?

问题描述

我喜欢通过 setuptools 来了解 Python 命名空间包背后的神话，这是我所做的测试.

I like to figure out the myth behind Python's namespace packages by setuptools, and here is what I did test.

• 通过virtualenv创建虚拟环境.
• 在 PyPI 上查找命名空间包.
• 通过 pip install 安装该软件包.
• 检查已安装的文件层次结构.

• Make a virtual environment by virtualenv.
• Find a namespaced package on PyPI.
• Install that package by pip install.
• Check the installed file hierarchy.

我使用的包是 zope.interface 并且它在以下方面运行良好我的 virtualenv 上的文件层次结构:

The package I played with is zope.interface and it worked well with the following file hierarchy on my virtualenv:

~virenv/.../site-packages/zope.interface-3.8.0-py2.6-nspkg.pth
                         /zope.interface-3.8.0-py2.6.egg-info/
                         /zope/
                              /interface/
                                        /...

一切看起来都很好，我喜欢 zope.interface 作为真正的命名空间包安装的方式(在文件夹 zope 下).

Everything looked fine and I love the way zope.interface got installed as a real namespaced package (under folder zope).

然后，我又做了一个测试，这就是我想请教的问题.我下载了去皮的 zope.interface 源文件.又喜欢手动玩

Then, I did another test and that's the question I would like to ask for your help. I downloaded the tared zope.interface source file. I liked to play it manually again

• 通过virtualenv创建虚拟环境.
• 将 zope.interface 解压到某个地方.
• 通过python setup.py install安装包.
• 去检查 site-packages 中发生了什么.

• Make a virtual environment by virtualenv.
• Untar the zope.interface into somewhere.
• Install the package by python setup.py install.
• Go check what happened in site-packages.

站点包如下所示:

~virenv/../site-packages/zope.interface-...egg/
                                              /zope/
                                                   /__init__.py
                                                   /interface/
                                              /EGG-INFO/

问.为什么我无法通过手动 python setup.py install 获得 pip install 的确切结果?

Q. How come I can't get the exactly result to pip install by manually python setup.py install?

推荐答案

pip 在内部使用 setup.py.它只是将附加选项传递给它.要重现 pip 正在做什么，请执行

pip uses setup.py internally. It just passes additional option to it. To reproduce what pip is doing, execute

python setup.py install --single-version-externally-managed

您还可以运行 pip -vv 以查看运行的确切命令.

You can also run pip -vv to see exactly which commands are run.

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