from . import x using import?

Question

How do I achieve from . import x (import module x from the current package), using __import__?

Here are some attempts that failed:

>>> __import__('.', fromlist=['x'])
ValueError: Empty module name

>>> __import__('.x')
ValueError: Empty module name

How is this done using __import__?

zwol · Accepted Answer · 2011-12-07 00:36:04Z

3

The __import__ built-in's semantics are dovetailed with the bytecode that the interpreter generates from import statements, and are not especially convenient for manual use. If I understand what you are going for correctly, this does what you want:

name = 'x'
mod = getattr(__import__('', fromlist=[name], level=1), name)

In versions of Python that have importlib, you might also be able to persuade importlib.import_module to do what you want with less ugliness, but I am not sure it is possible to get "from ." semantics that way.

edited Dec 7, 2011 at 0:36

answered Dec 7, 2011 at 0:27

zwol

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Comments

user719958 · Accepted Answer · 2011-12-06 23:29:55Z

2

__import__(__name__, fromlist=['x'])

That should get you what you need.

answered Dec 6, 2011 at 23:29

user719958

2 Comments

zwol Over a year ago

This does an absolute import of x, which is not what was asked for; also, you need to do something with the return value.

Lennart Regebro Over a year ago

@Zack: Yes, but since the absolute import uses the dynamically set name, you get the same result. But I'm not sure it works in a submodule.

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