數據框DataFrame和列表List相互轉換

DataFrame →List

 

 

import numpy as np
import pandas as pd
test = pd.DataFrame({ 'IDCARD' :['ID1','ID1','ID1','ID2','ID2'],
                     'TIME' :['2019/11/21','2019/11/29','2019/11/30','2019/1/28','2019/2/13']})
train_data = np.array(test) #先將數據框轉換為數組
train_data_list = train_data.tolist()  #其次轉換為列表
print(np.array(train_data_list))  #以數組形式打出來方便看

 

 

 輸出結果：

 

 List→DataFrame

 

from pandas.core.frame import DataFrame
data_set = ['A','B','C']
data = DataFrame(data_set)  
#data = pd.DataFrame(data_set)
print(data)

 

輸出結果：