如何转换的字符串列表，列出清单

Question

在Python的我怎么转换：

list a = [ 'i am going to America', 'i will come by tomorrow evening' ] 

    into 

list b = [ [i am going to America], [i will come by tomorrow evening] ] 

Answer 1

使用列表理解。

>>> a = [ 'i am going to America', 'i will come by tomorrow evening' ] 
>>> [[x] for x in a] 
[['i am going to America'], ['i will come by tomorrow evening']] 

Answer 2

您可以使用列表综合并产生另一个列表

list_a = [ 'i am going to America', 'i will come by tomorrow evening' ] 
print(list_a) # ['i am going to America', 'i will come by tomorrow evening'] 

list_b = [[x] for x in list_a] 
print(list_b) # [['i am going to America'], ['i will come by tomorrow evening']] 

Answer 3

需要声明的每个条目的列表，然后将其追加到main_list

list = ['i am going'] 
main_list.append(list) 

试试这个：

list = ['iam g', 'here'] 
main_list = [] 
main_list.append(list) 
print main_list 
output: [['iam g', 'here']] 
main_list.append(list) 
print main_list 
output: [['iam g', 'here'], ['iam g', 'here']]