import error in python on ubuntu

Question

I have created my first python module on ubuntu. When I'm trying to import the module in python using :

import brian

it is giving error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named brian

I have brian in /home/noamaan and python is in /usr/bin.

Are you running python in the same directory as the module file? Is the file called `brain.py`? — Martijn Pieters, Jan 10 '13 at 10:00
Open a terminal window; type `cd` and hit enter, now type `python` and hit enter, and type `import brian` at the Python prompt `>>>` and hit enter; do you get an error? — Burhan Khalid, Jan 10 '13 at 11:13

Mikhail Karavashkin · Answer 1 · 2014-06-19T15:54:43.033

3

If you launch python from the directory that contains brian module, everything will work as it is now.

To import custom module from anywhere you want you should read attentively something on the import mechanism in python to learn where the imported modules are searched for, etc.

But to make your code work right now, I can recommend you the following:

Either extend your PYTHONPATH variable before running python, to include the directory of your module

Or append it right in the code by using sys module in this way.

import sys

sys.path.append("path/to/module/dir")

import brian

Also, see info on site module

edited Jun 19 '14 at 15:54

answered Jan 10 '13 at 11:10

Mikhail Karavashkin

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Or you can just run `python` from the directory containing the file. – Burhan Khalid Jan 10 '13 at 11:13
Surely, but I didn't regard is a solution. Added to my answer, thank you. – Mikhail Karavashkin Jan 14 '13 at 15:43

score 1 · Answer 2 · edited Jun 20 '20 at 09:12

1

by default Python import modules from Python path var. You can view these paths so:

import sys

print sys.path

edited Jun 20 '20 at 09:12

Community

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answered Jan 10 '13 at 10:32

Dmitry Dubovitsky

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import error in python on ubuntu

2 Answers2