Python有很多依赖项 [英] Python any of many dependencies

问题描述

我不时遇到一种情况，即我有一个可以依赖于A或B软件包的软件包。

From time to time I come across a situation where I have a package that can depend on either package A or B.

例如，我的项目取决于a名为 spam 的软件包，如果将此项目重命名为 pyspam ，则我的项目可以依赖于垃圾邮件或 pyspam 。

For example, my project depends on a package called spam, if this project is renamed to pyspam, my project can either depend on spam or pyspam.

我不知道（或找不到）我会怎么做在setup.py中定义此类依赖项。

I cannot figure out (or find) how I would define such dependencies in setup.py. What is a commonly accepted way to solve this?

编辑：我想在 setup.py 。像这样的东西：

I would like to define the dependencies in setup.py. Something like this:

from setuptools import setup

setup(
    name='myproject',
    install_requires=[
        'spam || pyspam'
    ]
)

推荐答案

您可以检查该软件包是否可用，并根据该软件包决定使用哪个软件包。 （我希望我能正确理解您的问题。）

You can check to see if the package is available, and decide which to use based on that. (I hope I understood your question correctly).

from setuptools import setup

imp_spam = "spam"
try:
    import spam
except:
    imp_spam = "pyspam"

setup(
    name='myproject',
    install_requires=[imp_spam]
)

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