Python fold Beispiele

Beispiel #1

Datei: test_reductions.py Projekt: DeanWay/petl

def test_fold():

    t1 = (('id', 'count'), (1, 3), (1, 5), (2, 4), (2, 8))
    t2 = fold(t1, 'id', operator.add, 'count', presorted=True)
    expect = (('key', 'value'), (1, 8), (2, 12))
    ieq(expect, t2)
    ieq(expect, t2)

Beispiel #2

def test_fold():

    t1 = (('id', 'count'), (1, 3), (1, 5), (2, 4), (2, 8))
    t2 = fold(t1, 'id', operator.add, 'count', presorted=True)
    expect = (('key', 'value'), (1, 8), (2, 12))
    ieq(expect, t2)
    ieq(expect, t2)