我想从数据帧中合并两列,其中Column1不等于ANY:
DataFrame:
COLUMN1 | COLUMN2
0 A | FOO
1 B | BAR
2 ANY | FOO
3 ANY | BAR
4 C | FOO
因此,我想要如下所示的数据框
COLUMN1 | COLUMN2
0 A | FOO_A
1 B | BAR_B
2 ANY | FOO
3 ANY | BAR
4 C | FOO_C
ANY是变量,可以表示Null,EmptyString,String,Number。
谢谢。
这里是代码:
variable = "ANY" #You could change this to any variable value
for idx,row in df.iterrows():
if row["COLUMN1"] != variable:
df.loc[idx,"COLUMN2"] = row["COLUMN2"] + "_" + row["COLUMN1"]
输出:
print(df)
COLUMN1 COLUMN2
0 A FOO_A
1 B BAR_B
2 ANY FOO
3 ANY BAR
4 C FOO_C
您可以做
df['COLUMN2']=df.apply(lambda row:row['COLUMN2']+'_'+row['COLUMN1'] if row['COLUMN1']!='ANY' else row['COLUMN2'],axis=1)