为什么n不是整数？

Question

months=["Jan","Feb","March","April"]
temp =[]

for n in months:
    temp = int(input("please enter a number for ",months[n]))

这会出错：

  

TypeError：list indices必须是整数，而不是str

我不明白这一点。请帮忙。

Answer 1

您正在迭代字符串列表months，因此n已经是一个字符串。在for循环的每次迭代中，n等于months中的下一个项目。

months=["Jan","Feb","March","April"]
temp =[]

for month in months:
    temp.append(int(input("please enter a number for " + month)))

Answer 2

 @AlanRobinson upto my knowledge it should not be  



temp = int(input("please enter a number for ",month)) 
as you r trying to type cast an array of type string to int but in unmanered way