Python 熊猫:获取假人

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时间:2020-08-19 17:41:10  来源:igfitidea点击:

Pandas: Get Dummies

pythonpandasdummy-variable

提问by Michael Perdue

I have the following dataframe:

我有以下数据框:

   amount  catcode    cid      cycle      date     di  feccandid    type
0   1000    E1600   N00029285   2014    2014-05-15  D   H8TX22107   24K
1   5000    G4600   N00026722   2014    2013-10-22  D   H4TX28046   24K
2      4    C2100   N00030676   2014    2014-03-26  D   H0MO07113   24Z

I want to make dummy variables for the values in column type. There about 15. I have tried this:

我想为 column 中的值创建虚拟变量type。大约有 15 个。我试过这个:

pd.get_dummies(df['type'])

pd.get_dummies(df['type'])

And it returns this:

它返回这个:

           24A  24C  24E  24F  24K  24N  24P  24R  24Z
date                                    
2014-05-15  0    0    0    0    1    0    0    0    0
2013-10-22  0    0    0    0    1    0    0    0    0
2014-03-26  0    0    0    0    0    0    0    0    1

What I would like is to have a dummy variable column for each unique value in Type

我想要的是为每个唯一值设置一个虚拟变量列 Type

回答by Till

You can try :

你可以试试 :

df = pd.get_dummies(df, columns=['type'])