[英]Convert pandas df cells to say column name
I have a df like this:我有一个这样的 df:
0 1 2 3 4 5
abc 0 1 0 0 1
bcd 0 0 1 0 0
def 0 0 0 1 0
How can I convert the dataframe cells to be the column name if there's a 1 in the cell?如果单元格中有 1,如何将数据框单元格转换为列名? Looks like this:看起来像这样:
0 1 2 3 4 5
abc 0 2 0 0 5
bcd 0 0 3 0 0
def 0 0 0 4 0
Let us try让我们试试
df.loc[:,'1':] = df.loc[:,'1':] * df.columns[1:].astype(int)
df
Out[468]:
0 1 2 3 4 5
0 abc 0 2 0 0 5
1 bcd 0 0 3 0 0
2 def 0 0 0 4 0
I'd suggest you simply do the logic for each column, where the value is 1
in the given column, set the value as the column name我建议您简单地为每一列执行逻辑,其中给定列中的值为1
,将该值设置为列名
for col in df.columns:
df.loc[df[col] == 1, col] = col
We can use np.where
over the whole dataframe:我们可以在整个数据帧上使用np.where
:
values = np.where(df.eq(1), df.columns, df)
df = pd.DataFrame(values, columns=df.columns)
0 1 2 3 4 5
0 abc 0 2 0 0 5
1 bcd 0 0 3 0 0
2 def 0 0 0 4 0
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