How to convert each value of a series to a list, then combine them to a list?-CodePudding

for example, I have a df like this:

       A
0   I like this
1   I like that

which was created by:

df = DataFrame({'A':['I like this','I like that']})

Now for df['A'], I want to convert this series to a list of lists, like this:

[['I like this'],['I like that']]

I searched about this but I only got suggestions like tolist(), which converts a series to a list, not what I look for

['I like this', 'I like that']

Can anyone help me with this? Thanks in advance! I use such df for gensim use.

CodePudding user response：

You need to apply the list operation on each row individually as well.

df.apply(list, axis=1).tolist()

If you just want this apply on a few columns in your DF, simply slice into the DF using:

df[['A']].apply(list, axis=1).tolist()

Output

[['I like this'], ['I like that']]

CodePudding user response：

You can try list comprehension, to convert a list into a list of lists

import pandas as pd
df = pd.DataFrame({'A':['I like this','I like that']})
my_list = list(df['A'])
[[i] for i in my_list]
#Output: [['I like this'], ['I like that']]

CodePudding user response：

As an alternative:

new_list =list(map(lambda x:[x], list(df.A.values)))
#[['I like this'], ['I like that']]