Python无法正确地从另一个文件夹导入

Question

I am trying to set up a python project from multiple directories to keep it clean. I have a parent folder project , and two sub-directories project/sub1 and project/sub2 .

In the sub1 folder, there is a file named Thing.py that is shown below. All that is in there is a class to hold some variables. I have also tried no class, just globals in the file. Both result in the same issue.

In the sub2 folder, there is a file that tries to import the class Thing from Thing.py . It seems importing is not an issue, but Thing has no attributes after it is imported, so I can't use anything from it.

I've tried looking up importing from other folders (with using the sys module, sys.path.append(import path)) , and also things about __init__.py files, but I cannot get this to work.

Also, if I copy the file to the sub2 folder, it imports fine. The print(dir()) function call prints some things, but nothing I made. Help would be appreciated.

Thanks.

project/sub1/Thing.py

class Thing:
    a = 1
    b = 2

project/sub2/Importing File

import sys
import tkinter as tk
from tkinter import ttk

sys.path.append(r"..\sub1")
import Thing
print(dir(Thing))

print(dir()) output

['__builtins__', '__cached__', '__doc__', '__file__', '__loader__', 
'__name__', '__package__', '__path__', '__spec__']

Answer 1

I have added init .py to the project dir as well as to both the subdirectories. I am using a mac machine so my paths are different you can change them appropriately as you are using a windows machine (I guess). I am running the importingfile.py file from sub2 dir (screenshot here) .