Easiest way to automatically download required modules in Python?

I would like to release a python module I wrote which depends on several packages. What's the easiest way to make it so these pa开发者_如何学Gockages are programmatically downloaded just in case they are not available on the system that's being run? Most of these modules should be available by easy_install or pip or something like that. I simply want to avoid having the user install each module separately.

thanks.

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pip uses requirements files, which have a very straightforward format.

For more Python packaging tooling recommendations, see the latest from the Python Packaging Authority (PyPA).

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See the setuptools docs on how to declare your dependencies -- this will allow easy_install to find, download and install all of them (and transitive closure thereof) if everything's available in PyPi, or otherwise if you specify the dependencies' URLs.