从子文件夹导入python模块

Question

I would like to import modules from within the following folder structure by referencing the sub-module app .

├── src
│   ├── __init__.py
│   └── app
│       ├── __init__.py
│       ├── getters
│       │   ├── company_1.py
│       │   └── company_2.py
│       ├── parsers
│       │   ├── company_1.py
│       │   └── company_2.py
│       └── writers
│           ├── company_1.py
│           └── company_2.py

Here is an example of what I want to do:

# src/app/writers/company_1.py

import app.parsers.company_1 as parser_1


def write_data(event, context):
    ...

but I get the error ModuleNotFoundError: No module named 'app' . I don't understand why this shouldn't work.

NOTE

Why am I including the seemingly redundant sub-folder app ? The side story here is that the functions writers/company_*.py will be implemented as Lambda functions on AWS, and in order to get all the necessary dependencies, I need to upload the contents of the src folder to AWS but need to have a top-level folder with a known name so that I can use it for absolute imports. Without app the contents of src are uploaded to a folder with an autogenerated name which I cannot reference.

I first tried relative imports, but received an attempted relative import with no known parent package error, so now I am going for absolute imports, inspo from here .

Answer 1

You can add this in the code ,

import os, sys
sys.path.append(os.path.join(os.path.dirname(__file__), "source"))

Just replace source with the folder where you have saved your modules. In this case replace source with app

Answer 2

Did you try having in __init__.py inside your app folder ?

module
|
|--module
|  |
|  |--__init__.py
|  |--module.py