这种目录结构的绝对导入和相对导入是什么？

Question

I have a directory structure like this,

Assignments

├── Assignment1

│ ├── Assignment-1.pdf

│ └── assignment1.py

└── Methods

├── init .py

├── primality.py

I want to import functions from the primality.py file into the assignment1.py file.

What is my relative and absolute import line for this dirctory structure?

I also tried using this, from..Methods.primality import func

but it gives me an error,

ImportError: attempted relative import with no known parent package

Can anyone explain me what am I doing wrong here?

Answer 1

You should add the missing __init__.py as in:

├── Assignment1

│       ├── Assignment-1.pdf

│       ├── __init__.py # this

│       └── assignment1.py

└── Methods

│       ├── __init__.py

│       ├── primality.py

then go to the Assignments folder and from there run:

$ python3 -m Assignment1.assignment1 # note no py

Then python sees the directory structure as a package structure and Methods/Assignment1 are packages (and you should rename them to methods/assignment1)