ImportError: attempted relative import with no known parent package

How to fix ImportError: attempted relative import with no known parent package

You ran a file that uses relative imports (from . import x) directly as a script, so Python does not know its package. Run it as a module from the project root: python -m package.module instead of python package/module.py. Or convert the relative imports to absolute ones.

The exact error

ImportError: attempted relative import with no known parent package

Fix it

1. From the project root (where the top package dir lives), run python -m package.module. Expected: relative imports resolve

2. Alternative: rewrite from .helpers import f as from package.helpers import f. Expected: works however it is launched

3. Check every package dir has an init.py (namespace packages aside). Expected: package structure recognized

When this applies

running a module file directly that contains from . / from .. imports

When this does NOT apply

absolute imports failing (that is ModuleNotFoundError, different fix)

Versions

any Python 3

Why it happens

Relative imports need the module's package context; direct script execution leaves package unset.

Edge cases

python -m adds the CWD to sys.path; running from the wrong directory still fails.