CODEWITHSUNDEEP
python
Igor
Igor

Reputation: 6255

How to properly write the import statement

How do I properly write something like this:

from ../lib.model import mymodel

Here is the tree:

lib----->model---->mynodel.py
 |
 |----->myscript--->myscript.py

Upvotes: 0

Views: 177

Answers (3)

flornquake
flornquake

Reputation: 3366

If lib is a package, run myscript as a module and import mymodel like this:

from ..model import mymodel    # relative import

Or:

from lib.model import mymodel    # absolute import

To run myscript.py as a module in the lib package, do one of the following:

  • run a program in the folder containing lib that imports lib.myscript.myscript
  • run myscript.py as a module from the folder containing lib, using python -m lib.myscript.myscript

Upvotes: 1

dm03514
dm03514

Reputation: 55952

if your script is using lib you can create a setup.py using file for your project using setuptools

Using setuptools develop command will create a "development mode" version of your project and put it on your python path. It then becomes easy to use it like you would use any python package.

your setup.py can be as simple as:

from setuptools import setup, find_packages


setup(
    name = "lib",
    version = "0.1dev",
    packages = find_packages(),
)

Then you can develop on your project like

python setup.py develop

Now you can import your package into any script you want

from lib.model import model

Upvotes: 1

willeM_ Van Onsem
willeM_ Van Onsem

Reputation: 476574

Assuming you call from myscript.py.

Try this:

import sys
sys.path.insert(0, '../model/')
import mynodel

mynodel is probably mymodel, I think you made a typo in your post.

Never put the extension at the imprt statement.

sys.path is a list of paths where python will look for library files. You can simply add a relative path to the directory you want. By putting it at the front of the list, you ensure that python will first look for the file at the specified path (say for instance there is a library with the same name, your file will have priority).

Furthermore it could be useful to give the output of tree (a linux and cmd (Windows) command). This gives standardized output.

Upvotes: 0

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