making addons externally help

i want to make add ons externally, but am under the understanding that i can only make them within blender. im not sure this is 100% true, i would like to take advantage of the autocomplete features of eclipse, but have access to the libraries of blender. is it possible to get a copy of the libraries of blender, import them into eclipse, and just copy and past the code into blenders console/text editor when im done?

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