df = age;"job";"marital";"education";"default";"housing";"loan";"contact";"month";"day_of_week";"duration";"campaign";"pdays";"previous";"poutcome";"emp.var.rate";"cons.price.idx";"cons.conf.idx";"euribor3m";"nr.employed";"y"
0 30;"blue-collar";"married";"basic.9y";"no";"ye...
1 39;"services";"single";"high.school";"no";"no"...
2 25;"services";"married";"high.school";"no";"ye...
3 38;"services";"married";"basic.9y";"no";"unkno...
4 47;"admin.";"married";"university.degree";"no"...
5 32;"services";"single";"university.degree";"no...
6 32;"admin.";"single";"university.degree";"no";...
7 41;"entrepreneur";"married";"university.degree...
8 31;"services";"divorced";"professional.course"...
9 35;"blue-collar";"married";"basic.9y";"unknown...
有21个属性，我想将一列拆分为21列。
df['1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21'].apply(lambda x: pd.Series(x.split(';')))
然后它返回：
KeyError：'1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20'
有什么问题？