python name error：NameError：name’Jewels’未定义

python name error: NameError: name 'Jewels' is not defined

下面的代码有什么错误？在哪里定义列表变量jewels？

1 2	for jew in range(0,Total_Jewels): Jewels[jew]=int(raw_input("Please Enter approx price for Jewel#"+str(jew+1)))

错误

Please Enter approx price for Jewel#111
--------------------------------------------------------------------------- NameError Traceback (most recent call
last) in ()
1 for jew in range(0,Total_Jewels):
----> 2 Jewels[jew]=int(raw_input("Please Enter approx price for Jewel#"+str(jew+1)))

NameError: name 'Jewels' is not defined

相关讨论

你不能这样填清单。因为您从一个空列表开始，Jewels = []，所以您试图分配给Jewels[0]将导致IndexError。您可以使用list.append方法

1
2
3

jewels = []
for i in range(total_jewels):
jewels.append(raw_input('Please Enter approx price for Jewel #{}: '.format(i)))

或列表理解

1	jewels = [raw_input('Please Enter approx price for Jewel #{}: '.format(i)) for i in range(total_jewels)]