Question

for循环有3次迭代（并且会更快）。是否可以在第二个循环之后为assign_organizer定义标准值？

    [...]
    name = ['Super Bowl 2018', 'Jon Summer 2019', 'Jon Summer 2020', ]
    slug = ['super-bowl-2018', 'jon-summer-2019', 'jon-summer-2020', ]
    first_organizer = Organizer.objects.all().first()
    last_organizer = Organizer.objects.all().last()
    assign_organizer = [first_organizer, last_organizer, ]

    for i in range(len(name)):
        Event.objects.create(
            organizer=assign_organizer[i],
            name=name[i],
            slug=slug[i],
            status='on_sale',
            short_description=lorem,
            additional_information=lorem_long,
            venue_name=lorem,
            venue_address=lorem,
            start_date='2018-05-26 18:12:58.556925+02',
            end_date='2018-05-26 18:12:58.556925+02',
            facebook_event_link=lorem,
            banner=lorem,
        )

__更新__：

我现在尝试了评论中提出的解决方案，但是，我没有得到预期的结果。（我现在没有违约，只是决定从头开始做起来更好。）

预期：

测试1：A 测试2：1 已分配：a1

测试1：B 测试2：2 已分配：a2

测试1：C 测试2：3 已分配：a1

实际结果： 但是，它会在第二次循环后停止。

test1 = ['A', 'B', 'C']
test2 = ['1', '2', '3']

assigned_raw = ['a1', 'a2']
assigned = itertools.chain(assigned_raw)

for a, b, c in zip(test1, test2, assigned):

    print("TEST 1: ", a)
    print("TEST 2: ", b)
    print("Assigned: ", c)

Python：for循环中的默认值

0 个答案: