How to import a Python module from a sibling folder?
PythonImportModuleRelative PathPython Problem Overview
I have gone through many Python relative import questions but I can't understand the issue/get it to work.
My directory structure is:
Driver.py
A/
Account.py
__init__.py
B/
Test.py
__init__.py
Driver.py
from B import Test
Account.py
class Account:
def __init__(self):
self.money = 0
Test.py
from ..A import Account
When I try to run:
python Driver.py
I get the error
Traceback (most recent call last):
from B import Test
File "B/Test.py", line 1, in <module> from ..A import Account
ValueError: Attempted relative import beyond toplevel package
Python Solutions
Solution 1 - Python
This is happening because A and B are independent, unrelated, packages as far as Python is concerned.
Create a __init__.py in the same directory as Driver.py and everything should work as expected.
Solution 2 - Python
In my case adding __init__.py was not enough. You also have to append the path of the parent directory if you get module not found error.
root :
|
|__SiblingA:
| \__A.py
|
|__SiblingB:
| \_ __init__.py
| \__B.py
|
To import B.py from A.py, you have to do the following
import sys
# append the path of the parent directory
sys.path.append("..")
from SiblingB import B
print("B is successfully imported!")
Solution 3 - Python
The reason for
ValueError: Attempted relative import beyond toplevel package
is that A is the same directory level as Driver.py. Hence, ..A in from ..A import Account is beyond top-level package.
You can solve this by create a new folder named AandB together with __init__py in this new folder, and then move A and B folders into AandB folder. The directory structure is as following：
Correspondingly, the content in Driver.py should be modified as from AandB.B import Test.