openstack
/
diskimage-builder
Code Issues Proposed changes
diskimage-builder/diskimage_builder/elements/dib-python
History
Dirk Mueller f58bf252de Drop support for Ubuntu precise 
Ubuntu 12.04 LTS reached its regular End of Life on April 28, 2017.

Depends-On: I5e145095a10db112bb27516bfe652d2cdc052a61
Change-Id: I64af4c5183d77a75dcd062895d19b0a1330c8da8
 		2017-05-31 14:36:30 +02:00
..
environment.d Drop support for Ubuntu precise 2017-05-31 14:36:30 +02:00
pre-install.d Release 1.25.2 2017-02-02 11:20:00 +11:00
README.rst Install pip with python interpreter 2017-04-11 18:59:09 +10:00

README.rst

dib-python

Adds a symlink to /usr/local/bin/dib-python which points at either a python2 or python3 executable as appropriate.

In-chroot scripts should use this as their interpreter (#!/usr/local/bin/dib-python) to make scripts that are compatible with both python2 and python3. We can not assume /usr/bin/python exists, as some platforms have started shipping with only Python 3.

DIB_PYTHON will be exported as the python interpreter. You should use this instead of python script.py (e.g. ${DIB_PYTHON} script.py). Note you can also call /usr/local/bin/dib-python script.py but in some circumstances, such as creating a virtualenv, it can create somewhat confusing references to dib-python that remain in the built image.

This does not install a python if one does not exist, and instead fails.

This also exports a variable DIB_PYTHON_VERSION which will either be '2' or '3' depending on the python version which dib-python points to.