为什么a1[0]就可以用.hour a1[i]就不可以

Question

a1=a["Duration (min:sec)"].values
a1
c1=a1[0].hour*60+a1[0].minute
a.loc[0,"Duration (min:sec)"]=c1
i=1
while i<220:

g1=a1[i].hour
e1=a1[i].minute
c1=g1*60+e1
a.loc[i,"Duration (min:sec)"]=c1

a

Answer 1

python里面是这样规则的，你可以先把a的值确定之后,使用for循环来写：
for one_data in a:
..