Version agnotstic checking if a variable is an integer?

Question

In python 2.6 and 2.7 you use

isinstance(variable, (int, long))

In python 3x ints and longs are merged. So you simply do

isinstance(variable, int)

Is there a clean version agnostic way of testing if a variable is an integer in python?

Answer 1

From 2.6 you can use numbers.Integral:

if isinstance(var, numbers.Integral):
    pass # whatever