我如何拆分列表并将其转换为二维列表？

Question

我有一个列表：lst = [1,2,3,4,'-',5,6,7,'-',8,9,10]
遇到'-'字符时需要拆分。并变成这样的二维列表：
[[1,2,3,4],[5,6,7],[8,9,10]]
到目前为止我有这个，它所做的就是去掉“-”字符：

l=[]
for item in lst:
   if item != '-':
      l.append(item)

return l

我正在学习如何编码，因此非常感谢您的帮助

Answer 1

new_list = [] #final result
l=[] #current nested list to add
for item in lst:
    if item != '-':
        l.append(item) # not a '-', so add to current nested list
    else: #if item is not not '-', then must be '-'
        new_list.append(l) # nested list is complete, add to new_list
        l = [] # reset nested list
print(new_list)

Answer 2

import numpy as np
import more_itertools as mit

lst = np.array([1, 2, 3, 4, '-', 5, 6, 7, '-', 8, 9, 10])
aaa = list(mit.split_at(lst, pred=lambda x: set(x) & {'-'}))
bbb = [list(map(int, i)) for i in aaa]

输出bbb

[[1, 2, 3, 4], [5, 6, 7], [8, 9, 10]]

我如何拆分列表并将其转换为二维列表？

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