CODEWITHSUNDEEP
pythonpython-3.x
Florian
Florian

Reputation: 115

Python relative Imports with test folder

I know there are probably thousands of posts like this and i nearly read them all and still i could not fix my issue.

I have the following project structure:

project
│
├── main.py           
├── module1
│   ├── __init__.py    
│   ├── b.py    
│   └── c.py
│
├── tests   
│   └── tests_module1.py

in tests_module1.py i want to import functions b.py and c.py to test their functionality. I already tried the following imports:

I also tried adding init.py files to the project as well as the test folder with no succsess. It only works when i move the test_module1.py into the project folder and import with :

I am using Python 3.9

Upvotes: 1

Views: 1752

Answers (3)

maij
maij

Reputation: 4218

See this post. Python does not know the package structure if you run python3 tests_module1.py from within the tests directory.

Try the following b.py:

# module1/b.py

def hello():
    print("Hello world!")

Import it in tests_module1.py:

from module1 import b
b.hello()

Run it from the project directory with the -m (run as module) switch:

python3 -m tests.tests_module1

Upvotes: 1

rauberdaniel
rauberdaniel

Reputation: 1033

Have a look at modifying the python search path: https://docs.python.org/3.9/install/index.html#modifying-python-s-search-path

Modifying Python’s Search Path

When the Python interpreter executes an import statement, it searches for both Python code and extension modules along a search path. A default value for the path is configured into the Python binary when the interpreter is built. You can determine the path by importing the sys module and printing the value of sys.path...

The expected convention for locally installed packages is to put them in the …/site-packages/ directory, but you may want to install Python modules into some arbitrary directory... There are several different ways to add the directory.

The most convenient way is to add a path configuration file to a directory that’s already on Python’s path, usually to the .../site-packages/ directory. Path configuration files have an extension of .pth, and each line must contain a single path that will be appended to sys.path...

<<snip several other options>>

Finally, sys.path is just a regular Python list, so any Python application can modify it by adding or removing entries.

See also

Upvotes: 0

Rajat Soni
Rajat Soni

Reputation: 151

instead of from .. import b you must try

from ...module1 import *

Upvotes: 0

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