Python – In Python, is there a concise way to use a list comprehension with multiple iterators

iteratorlist-comprehensionpython

Basically, I would like to build a list comprehension over the "cartesian product" of two iterators. Think about the following Haskell code:

[(i,j) | i <- [1,2], j <- [1..4]]

which yields

[(1,1),(1,2),(1,3),(1,4),(2,1),(2,2),(2,3),(2,4)]

Can I obtain a similar behavior in Python in a concise way?

Are you asking about this?

[ (i,j) for i in range(1,3) for j in range(1,5) ]

One way is to use Kivy:

Open source Python library for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps.

Kivy runs on Linux, Windows, OS X, Android and iOS. You can run the same [python] code on all supported platforms.

Just use the --python (or short -p) option when creating your virtualenv instance to specify the Python executable you want to use, e.g.:

virtualenv --python=/usr/bin/python2.6 <path/to/new/virtualenv/>

N.B. For Python 3.3 or later, refer to The Aelfinn's answer below.