Pandas將字典dict轉為Dataframe的3種方法總結
https://blog.csdn.net/sinat_26811377/article/details/100065580
輸入:my_dict = {'i': 1, 'love': 2, 'you': 3}
期望輸出:my_df
0
i 1
love 2
you 3
如果字典裡key和value是一一對應的,那麼直接輸入my_df = pd.DataFrame(my_dict)會報錯“ValueError: If using all scalar values, you must pass an index”。
解決方法如下:
1、使用DataFrame函式時指定字典的索引index
import pandas as pd
my_dict = {'i': 1, 'love': 2, 'you': 3}
my_df = pd.DataFrame(my_dict,index=[0]).T
print(my_df)
2、把字典dict轉為list後傳入DataFrame
import pandas as pd
my_dict = {'i': 1, 'love': 2, 'you': 3}
my_list = [my_dict]
my_df = pd.DataFrame(my_list).T
print(my_df)
3、 使用DataFrame.from_dict函式
具體引數可以參考官網:https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.from_dict.html
import pandas as pd
my_dict = {'i': 1, 'love': 2, 'you': 3}
my_df = pd.DataFrame.from_dict(my_dict, orient='index')
print(my_df)
輸出結果
0
i 1
love 2
you 3