Python 类型错误：不支持 - 的操作数类型：'int' 和 'list'
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/14042291/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
TypeError: unsupported operand type(s) for -: 'int' and 'list'
提问by Esther28
I'm trying to create a program in python that will tell you the day of the week you were born using the Zeller algorithm http://en.wikipedia.org/wiki/Zeller%27s_congruencebut it's giving me this error
我正在尝试在 python 中创建一个程序，它会使用 Zeller 算法http://en.wikipedia.org/wiki/Zeller%27s_congruence告诉你你出生的那一天，但它给了我这个错误
TypeError: unsupported operand type(s) for -: 'int' and 'list'
类型错误：不支持 - 的操作数类型：'int' 和 'list'
Why is that?
这是为什么？
date = raw_input ("Introduce here the day, month and year you were born like this: DDMMYYYY")
if date.isdigit() and len(date) == 8:
day = date[0:2]
month = date[2:4]
year = date[4:8]
day = int(day)
month = int(month)
year = int(year)
result = (day + (month + 1) * 2.6, + year % 100 + (year % 100) / 4 - 2 * [year / 100]) % 7
(It's the first program I create by myself, so be nice please ;) )
（这是我自己创建的第一个程序，所以请保持礼貌；））
采纳答案by Jon Clements
What's happening in answer to your direct question has been answered by @mellamokb and comments...
@mellamokb 和评论已经回答了您直接问题的答案...
However, I would point out that Python already this builtin and would make it easier:
但是，我要指出 Python 已经是这个内置的，并且会更容易：
from datetime import datetime
d = datetime.strptime('1312981', '%d%m%Y')
# datetime(1981, 12, 13, 0, 0)
Then you can perform calculations more easily on an object that is actually a datetimerather than co-erced strings...
然后您可以更轻松地对实际上是一个datetime而不是强制字符串的对象执行计算......
回答by mellamokb
I think 2 * [year / 100]should be parentheses instead of brackets, otherwise it indicates you want to make a single-element list:
我认为2 * [year / 100]应该是圆括号而不是方括号，否则表示您要制作单元素列表：
(year % 100) / 4 - 2 * (year / 100))
^ ^ change [] to ()
