Python 从列表列表到词典列表

Python 从列表列表到词典列表,python,list,dictionary,Python,List,Dictionary,如何将列表列表转换为词典列表 更具体地说,我该怎么做: [['a1', 'b1', 'c1', 'd1', 'e1', 'f1', 'g1', 'h1', 'i1'], ['a2', 'b2', 'c2', 'd2', 'e2', 'f2', 'g2', 'h2', 'i2'], ['a3', 'b3', 'c3', 'd3', 'e3', 'f3', 'g3', 'h3', 'i3'], ['a4', 'b4', 'c4', 'd4', 'e4', 'f4', 'g4', 'h4', 'i4'

如何将列表列表转换为词典列表

更具体地说,我该怎么做:

[['a1', 'b1', 'c1', 'd1', 'e1', 'f1', 'g1', 'h1', 'i1'], ['a2', 'b2', 'c2', 'd2', 'e2', 'f2', 'g2', 'h2', 'i2'], ['a3', 'b3', 'c3', 'd3', 'e3', 'f3', 'g3', 'h3', 'i3'], ['a4', 'b4', 'c4', 'd4', 'e4', 'f4', 'g4', 'h4', 'i4'], ['a5', 'b5', 'c5', 'd5', 'e5', 'f5', 'g5', 'h5', 'i5'], ['a6', 'b6', 'c6', 'd6', 'e6', 'f6', 'g6', 'h6', 'i6'], ['a7', 'b7', 'c7', 'd7', 'e7', 'f7', 'g7', 'h7', 'i7'], ['a8', 'b8', 'c8', 'd8', 'e8', 'f8', 'g8', 'h8', 'i8'], ['a9', 'b9', 'c9', 'd9', 'e9', 'f9', 'g9', 'h9', 'i9']]
为此:

[{'a1': None, 'b1': None, 'c1': None, 'd1': None, 'e1': None, 'f1': None, 'g1': None, 'h1': None, 'i1': None}, #etc
这将适用于任何iterable的iterable,而不仅仅是列表列表(当然,前提是第二级元素是可用的)

在Python 2中,上述代码返回一个列表

在Python3中,它返回一个iterable。如果需要列表,可以使用
list(map(dict.fromkeys,l))

尝试以下方法:

l = [['a1', 'b1', 'c1', 'd1', 'e1', 'f1', 'g1', 'h1', 'i1'], ['a2', 'b2', 'c2', 'd2', 'e2', 'f2', 'g2', 'h2', 'i2'], ['a3', 'b3', 'c3', 'd3', 'e3', 'f3', 'g3', 'h3', 'i3'], ['a4', 'b4', 'c4', 'd4', 'e4', 'f4', 'g4', 'h4', 'i4'], ['a5', 'b5', 'c5', 'd5', 'e5', 'f5', 'g5', 'h5', 'i5'], ['a6', 'b6', 'c6', 'd6', 'e6', 'f6', 'g6', 'h6', 'i6'], ['a7', 'b7', 'c7', 'd7', 'e7', 'f7', 'g7', 'h7', 'i7'], ['a8', 'b8', 'c8', 'd8', 'e8', 'f8', 'g8', 'h8', 'i8'], ['a9', 'b9', 'c9', 'd9', 'e9', 'f9', 'g9', 'h9', 'i9']]
res = []
for line in l:
    res.append(dict((k, None) for k in line))
或:


为您修复了标题。请原谅,因为我可能犯了一些非常基本的错误(因为这个答案有19位快乐的读者),但该代码似乎产生了错误:
。我做错了什么?@Lewis:听起来你在用python3。在这种情况下,使用
列表(map(dict.fromkeys,l))
。我会更新答案。
l = [['a1', 'b1', 'c1', 'd1', 'e1', 'f1', 'g1', 'h1', 'i1'], ['a2', 'b2', 'c2', 'd2', 'e2', 'f2', 'g2', 'h2', 'i2'], ['a3', 'b3', 'c3', 'd3', 'e3', 'f3', 'g3', 'h3', 'i3'], ['a4', 'b4', 'c4', 'd4', 'e4', 'f4', 'g4', 'h4', 'i4'], ['a5', 'b5', 'c5', 'd5', 'e5', 'f5', 'g5', 'h5', 'i5'], ['a6', 'b6', 'c6', 'd6', 'e6', 'f6', 'g6', 'h6', 'i6'], ['a7', 'b7', 'c7', 'd7', 'e7', 'f7', 'g7', 'h7', 'i7'], ['a8', 'b8', 'c8', 'd8', 'e8', 'f8', 'g8', 'h8', 'i8'], ['a9', 'b9', 'c9', 'd9', 'e9', 'f9', 'g9', 'h9', 'i9']]
res = []
for line in l:
    res.append(dict((k, None) for k in line))
res = [dict((k, None) for k in line) for line in l]