#!/usr/bin/env python

def _(string):
    """Placeholder for translation"""
    return unicode(string).decode('UTF-8')

def tupleslices(list, size):
    '''Generates a list of tuples of a specific size. For example:
    tupleslices([1,2,3,4], 2) returns [(1,2), (2,3), (3,4)]
    '''

    result = []

    for i in range(len(list) - size + 1):
        t = tuple(list[i:(i + size)])
        result.append(t)

    return result

if __name__ == '__main__':
    print "Unit testing"

    assert tupleslices(range(5), 2) == [(0,1), (1,2), (2,3), (3,4)]
    assert tupleslices(range(5), 4) == [(0,1,2,3), (1,2,3,4)]