如何删除此外层?
class BlogListView(ListView, CategoryMixin):
model = Event
template_name = 'pages/home.html'
def get_context_data(self, **kwargs):
ctx = super(BlogListView, self).get_context_data(**kwargs)
ctx['view_specific'] = 'something'
return ctx
...
有很多帖子详细说明如何拼合列表列表(基本上与删除外层相同),但我找不到列表列表的任何内容
谢谢!
答案 0 :(得分:0)
要删除一个图层,只需应用chain.from_iterable
:
>>> items = [
... [['SKU', 'DHF', 'KSD'], ['KUD', 'HFK', 'SDJ'], ['UDH', 'FKS', 'DJH']],
... [['KUG', 'UJY', 'FUY'], ['UGU', 'JYF', 'UYF'], ['GUJ', 'YFU', 'YFG']]
... ]
>>> from itertools import chain
>>> items2 = list(chain.from_iterable(items))
>>> items2
[['SKU', 'DHF', 'KSD'], ['KUD', 'HFK', 'SDJ'], ['UDH', 'FKS', 'DJH'], ['KUG', 'UJY', 'FUY'], ['UGU', 'JYF', 'UYF'], ['GUJ', 'YFU', 'YFG']]
>>> items3 = list(chain.from_iterable(items2))
>>> items3
['SKU', 'DHF', 'KSD', 'KUD', 'HFK', 'SDJ', 'UDH', 'FKS', 'DJH', 'KUG', 'UJY', 'FUY', 'UGU', 'JYF', 'UYF', 'GUJ', 'YFU', 'YFG']