Les Fées Spéciales

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Let's say you have a library that may be called from python 2.x or 3.x, but you don't know which one yet. You have a directory structure thus laid out:
<code>.
+--libs2x
|   +-- mylib
|      +-- __init__.py
+--libs3x
|   +-- mylib
|      +-- __init__.py
+--my_module
|   +-- __init__.py
</code>

In ''%%./my_module/__init__.py%%'', you can use the following Python code to import the right lib depending on the Python version:
<code python>from __future__ import print_function

import sys, os

if sys.version_info.major == 3:
	dir_name = "libs_3x"
elif sys.version_info.major == 2:
	dir_name = "libs_2x"
else:
	print("WTF?!")

lib_path = os.path.dirname(__file__) # Start from the file and
lib_path = os.path.dirname(__path__) # go up two dirs. Do whatever you have to do to get to the libs path.
lib_path = os.path.join(lib_path, dir_name) # Go into the folder corresponding to the right version

sys.path.append(lib_path)

import mylib


# DO SOMETHING</code>

You can then import mylib from python 2 or 3.

Les Fées Spéciales

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