I made myself a little module which I happen to use quite a lot. Whenever I need it I simply copy it to the folder in which I want to use it. Since I am lazy I wanted to install it so that I can call it from anywhere, even the interactive prompt. So I read a bit about installing here, and concluded I needed to copy the file over to /usr/local/lib/python2.7/site-packages. That however, doesn’t seem to do anything.
Does anybody know where I need to copy my module for it to work system wide?
You basically have to write a file
setup.py which tells distutils what to do. Then you can simply
python setup.py install
with root permissions to install your module systemwide. There are good and easy examples, plus it’s the cleanest way I can imagine.
The answer is: it’s all about permissions.
It’s not enough to place the file in the correct location, like, such instance: /usr/local/lib/python2.7/dist-packages, you also need to ensure that the file can be read by the process you’re running, in this case, python.
Be sure that “other” users have read access to the file.
Open the bash console and execute this:
sudo chmod o+r "yourmodule.py" [Introduce the password]
After this go again to python and try the import:
As long as the path where the .py file is located is present in PYTHONPATH + the file is readable then you should be allowed to import it.
In one of the directories listed when you type
sys.path in your Python prompt. You can also add the directory which contains your file by modifiying the
PYTHONPATH environment variable:
# ~/.bashrc file export PYTHONPATH+=:/some/dir
If you’re using Ubuntu, copy files to
Following command will show you where to copy.
python -c "from distutils.sysconfig import *; print(get_python_lib())"
If you are the only one use the module, copy files to
Couple of things.
First the module must, (I believe), be in a directory that matches the module name.
Put that module directory under one of the directories in the PYTHONPATH (I use /usr/lib/pymodules/pythonV.x/). You can find a suitable directory in the path using
import sys print(sys.path)
from the python prompt.
You could also have a folder that contains all your global modules e.g.
my_modules/ then localize the
site-packages/ folder of the Python version your are using (you will find it easily by using this command:
python -m site). Now,
cd to this folder and create a custom file with a
.pth extension. In this file, add the absolute path to the folder that contains all the modules you want to make available system wide and save it. Your module should be available now