How to solve: attempted relative import with no known parent package

Question

I have a project structure with mostly empty python files:

-project
  --work1
      --__init__.py
      --app.py
      --momo.py

momo.py

import numpy as np
def plus(x):
    return x

app.py

from . import momo
a = momo.plus(6)

Running app.py directly results in this error:

from . import momo
ImportError: attempted relative import with no known parent package

I have tried change to "from plus import momo" but this yields the same error.

Python version 3.8

Any hints would be much appreciated.

Does this answer your question? [ImportError: attempted relative import with no known parent package :(](https://stackoverflow.com/questions/63312692/importerror-attempted-relative-import-with-no-known-parent-package) — theProcrastinator, Mar 16 '21 at 06:24

score 0 · Answer 1 · answered Mar 16 '21 at 04:16

0

You shouldn't import like you said.

you can just try this:

import momo

it should add momo to your current file.

and for using functions which has been declared in momo, you should call the function name after momo.. for example:

a = momo.plus(12)

if you just want to import plus`` from momo``` file, you can try

from momo import plus

then you just need to call function name, instead of the whole file and functions together. e.g :

a = plus(12)

answered Mar 16 '21 at 04:16

TheFaultInOurStars

3,464
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I can't just import momo or from momo import plus. It can't include in main.py – Tawan Mar 16 '21 at 13:23
But what error are you getting or why are you unable to do `import momo` inside `app.py`, plus I don't see any `main.py` – theProcrastinator Mar 16 '21 at 13:54
@Tawan where is the ```main.py``` file? can you add the main directory in the post? – TheFaultInOurStars Mar 17 '21 at 11:58

madbird · Answer 2 · 2021-03-16T04:40:00.323

0

Try running it from project directory as module (-m flag):

$ cd project
$ python -m work1.app

because when you're starting app directly like python app.py, is doesn't know that current folder is actually a package with __init__.py but dot in from . import * is a shortcut for a current package.

edited Mar 16 '21 at 04:40

answered Mar 16 '21 at 04:23

madbird

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How to solve: attempted relative import with no known parent package

2 Answers2