# implicit-namespace-package (INP001)

Derived from the **flake8-no-pep420** linter.

### What it does
Checks for packages that are missing an `__init__.py` file.

### Why is this bad?
Python packages are directories that contain a file named `__init__.py`.
The existence of this file indicates that the directory is a Python
package, and so it can be imported the same way a module can be
imported.

Directories that lack an `__init__.py` file can still be imported, but
they're indicative of a special kind of package, known as a namespace
package (see: [PEP 420](https://www.python.org/dev/peps/pep-0420/)).

Namespace packages are a relatively new feature of Python, and they're
not widely used. So a package that lacks an `__init__.py` file is
typically meant to be a regular package, and the absence of the
`__init__.py` file is probably an oversight.