How to import variables in a different python file

Question

I am trying to import some variables from a different python file resides in the same directory from a another python file.

been trying this thing for hours and I still couldn't get the variables to use.

I have two files in the same directory as below:

const.py

test.py

This is how const.py looks like

FOO = 1234
NAMESPACE = "default"
DEPLOYMENT_NAME = "deployment-test"
DOCKER_IMAGE_NAME = "banukajananathjayarathna/bitesizetroubleshooter:v1"
SERVICE_CLUSTER = "deployment-test-clusterip"
SERVICE_NODEPORT = "deployment-test-nodeport"
INGRESS_NAME = "deployment-test-ingress"

and this is how my test.py looks like:

import os 
from . import constant

print(constant.FOO)

error I am getting:

ImportError: attempted relative import with no known parent package

Why is it so hard to do this with Python?

They are in the same directory. Both files are in the same directory. Why it doesn't work? Does this not work for `python 2.7.5` version? — Jananath Banuka, Dec 04 '19 at 13:29
i mean that your working directory is not always the directory in which your files are — luigigi, Dec 04 '19 at 13:32
how do you run the scripts? using an ide or directly using the shell? — luigigi, Dec 04 '19 at 13:33
I just found that this python is running in `pycharm` and in a virtuaenv. — Jananath Banuka, Dec 04 '19 at 13:53

score 1 · Answer 1 · answered Dec 04 '19 at 12:48

1

This is what test.py should look like:

from const import FOO

print(FOO)

answered Dec 04 '19 at 12:48

Marcel Kämper

304
5
16

Not working. I don't know why. Should I have to set python path or something? – Jananath Banuka Dec 04 '19 at 13:24

Guven Degirmenci · Answer 2 · 2019-12-04T13:28:19.917

1

If you want to get all variable statements as they are you should do:

from const import *

print(FOO)
print(NAMESPACE)

If you want to import variables under module name (file name), you should do:

import const

print(const.FOO)
print(const.NAMESPACE)

If you want to import variables under module name but want to access with constant:

import const as constant

print(constant.FOO)
print(constant.NAMESPACE)

The file name is the module name.

edited Dec 04 '19 at 13:28

answered Dec 04 '19 at 13:27

Guven Degirmenci

684
7
16

Anything mentioned here doesn't work. Should I have to set python path or something? – Jananath Banuka Dec 04 '19 at 13:28
If the const.py and test.py are in the same directory, there should be no problem. – Guven Degirmenci Dec 04 '19 at 13:29
They in the same folder/directory still doesn't work. Does this has anything to do with `python` version? I am using `python 2.7.5` – Jananath Banuka Dec 04 '19 at 13:29
I don't think it would matter but you can check current directory with this: `print(os.getcwd())` – Guven Degirmenci Dec 04 '19 at 13:32
I just found that this python is running in pycharm and in a `virtuaenv` – Jananath Banuka Dec 04 '19 at 13:53

How to import variables in a different python file

2 Answers2

Linked