Managing Python installations

There are many versions of Python, and it becomes difficult to manage them all.

Often I need to install one module into 3 different versions of开发者_运维知识库 Python.

Is there a tool which can simplify things?

I'm on Windows.

Thanks.

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Are you using virtualenv? If not, you definitely want to check that out: http://pypi.python.org/pypi/virtualenv

It helps you by managing and switching between several virtual Python environments, with different versions of Python if you want to.

There are loads of tutorials of how to set it up, all over dem interweb.

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What Legogris said: use virtualenv.

I just answered a question on pip, virtualenv, and virtualenvwrapper applicable here. I highly recommend this combination of tools for maintaining isolated python environments.

As a further point, I strong recommend using the no-site-packages option so that each virtualenv has all its requirements in one place.

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Because some modules contain binary code which is linked agains a specific Python version, it will not be possible to instal a module only once. You will always have to install it for each installed version. But if you use pip, you should have a look at pip: dealing with multiple Python versions? Just create a batch file which calls pip for each installed version. That should at least simplify your life.

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I'm not aware of any Python facility for doing that, that's really the OS's job. Debian/Ubuntu, for example, has support for installing multiple versions of Python and installing libraries into each version. I doubt there's any such support in Windows.