如何跨项目导入python包

Question

I want to have a generic project in python which has packages and modules that can be used in multiple other projects. I want to know how can I import generic projects packages and modules in other projects. Say

A Generic Project which has re-usable/common code that can be used in multiple project

generic_project/
    package1/
        __init__.py
        module1/
    package2
        __init__.py
        module2/

and a Specific Project

project_1
    package3/
        __init__.py
        module3/
    package4/
        __init__.py
        module4/

How can I import module1(of generic project) in module3 (project1) ?
Just want to let you know that Generic project and Project 1 are two independent projects packaged and distributed separetly.

I have gone through similar questions but all of them mostly talk about referring packages with in a project.

Answer 1

1. Both generic_project and project_1 (and the moduleX s) have to include a __init__.py file to be considered (and treated) as packages.
2. generic_project needs to be installed (or simply present) as a package in either package3 (near module3 ) or [python installation path]\\Lib , so the python interpreter will consider looking for the following expression.
3. You access it like every python package - from generic_project.package1 import module1 or import generic_project.package1.module1 .