Max_consecutive_numbers.py

def get_max_consecutive_number(datas):
    """
    Retourne le nombre maximum de chiffres consécutifs 
    dans une listes. (Y'a t'il un built-in pour ça ? Itertool ?)

    >> suit = [2003, 2008, 2007, 2001, 2010]
    >> print get_max_consecutive_number(suit)
    >>>> 2

    >> suit = [2003, 2008, 2007, 2001, 2002, 2004]
    >> print get_max_consecutive_number(suit)
    >>>> 4

    """
    prev_num = None
    count = 0
    counts = []
    for d in sorted(list(set(datas))):

        if prev_num is None:
            count += 1
        else:
            nexts = (prev_num+1, prev_num-1)
            if d in nexts:
                count += 1
            else:
                count = 1

        prev_num = d
        counts.append(count)
    return sorted(counts, reverse=True)[0]