Python:两个名称相同的软件包；您如何指定要加载的内容? [英] Python: Two packages with the same name; how do you specify which is loaded?

问题描述

我有两个软件包，它们以相同的名称安装不同的软件包.它们都是包"，因为它们具有在setup命令中指定package=['foo']的顶级setup.py文件.

I have two packages that install different packages with the same name. They are both "packages" in that they have top-level setup.py files which specify package=['foo'] in the setup command.

如果我使用distutils.core安装，最后安装的将覆盖前一个(但我认为除非.py文件都具有相同的名称，否则不会覆盖).如果我使用setuptools安装，则两个软件包将安装到不同的鸡蛋中.

If I install using distutils.core, the last to be installed overwrites the previous one (but I think wouldn't overwrite unless the .py files all had the same names?). If I install using setuptools, the two packages get installed into different eggs.

一种选择是在导入软件包名称之前显式设置sys.path；这似乎是非pythonic"的，而且很脏.

One option would be to explicitly set sys.path before importing the package name; this seems "un-pythonic" and rather dirty.

假设我在setuptools的不同eggs中安装了这两个名称相同的软件包，如何指定要导入的软件包?

Assuming I have these two identically named packages installed in different eggs from setuptools, how do I specify which is imported?

推荐答案

设置工具指南提到了-multi-version ( -m )开关，该开关从 sys.path 完全.您必须尽早在代码中使用 pkg_resources.require('package == version')来修复 sys.path .此建议是 easy_install 在使用 -m 时始终显示的内容.

Setuptools guide mentions --multi-version (-m) switch that removes package from sys.path completely. You have to use pkg_resources.require('package==version') in your code as early as possible to let it fix sys.path. This advice is what easy_install always prints when one uses -m.

但是您不能一次导入两个文件(除非它们被设计为使用

But you can't have both imported at once (unless they're designed to do so using namespace packages).

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