Python - 没有命名的模块，但模块存在

Question

I have the next directory structure:

|-Server/
|-------OrderBook/
|       |--------message.py
|       |--------orderBookObject.py
|-------Rabbit/
|       |--------emisor.py
|       |--------receptor.py
|-------server.py
|-------processMessage.py

In server.py I have "from processMessage import A"

In processMessage.py I have "from OrderBook.orderBookObject import B"

and in orderBookObject.py I have "from Rabbit.emisor import C"

but I have the next error "ModuleNotFoundError: No module named 'Rabbit"

Why is this happening?

How can I fix it?

Edit: If I move Rabbit folder inside OrderBook folder, I have the same error.

Answer 1

create a file named __init__.py inside directory OrderBook and Rabbit

this will create package, and then you can import

https://docs.python.org/3/tutorial/modules.html#packages

so your directory structure will be looked like :

|-Server/
|-------OrderBook/
|       |--------__init__.py
|       |--------message.py
|       |--------orderBookObject.py
|-------Rabbit/
|       |--------__init__.py
|       |--------emisor.py
|       |--------receptor.py
|-------server.py
|-------processMessage.py