python 列数据框（字符串）转换为列表列表

Question

i have a dataframe with rows of str. i selected a column and i want to convert it to lists of list.

tokens

[wXvP3enu, wXvHXzUS, wXvPHXVe, wXvPHRs3, wXvH3kX4, wXvPHMpZ, wXvHX3oR, wXv_kemV]    
[wXujANbk, wXurAJsf, wXufwlh1, wXtr_4tD, wXujgvJA, wXuTQ-mP, wXuTA-zh, wXuPAEDJ]    
[wXvHbNqU, wXvDrof9, wXv_aXHk, wXvDrSIa, wXv_apaj, wXv_aM0Q, wXv7aWTK, wXv3aQrM]        
[wXvb7cpv, wXvH3hL0, wXvjmDaE, wXvT0sOS, wXv_jgB_, wXMD-zp5, wXvLUyAh, wXvXQ3Fg]    

tokens is a column of my dataframe and the infomation in it, is string. i want to convert these lists of strings to lists of list.

I tried it but it didn't work. I tried json too, but it didn't work!!!

token_load = load_df.loc[ : , "tokens"]

token_list = list()

for i in range(len(token_load)):

    token_list[i] =ast.literal_eval(token_load[i]) 

Answer 1

Try using list.append :

token_load = load_df.loc[ : , "tokens"]

token_list = list()

for i in range(len(token_load)):

    token_list.append(ast.literal_eval(token_load[i]))