《可爱的python》解答代码在python自带的IDLE中有语法错误！

[Michael He]

大作《可爱的python》刚收到，迫不及待开始学习python。

 

Python version: 3.1

Tk version: 8.5

IDLE version: 3.1

 

codes：

   1 #coding:utf-8
   2 '''cdays-5-exercise-1.py 判断今年是否是闰年
   3     @note: 使用了import, time模块, 逻辑分支, 字串格式化等
   4 '''
   5
   6 import time                             #导入time模块
   7 thisyear = time.localtime()[0]             #获取当前年份
   8 if thisyear % 400 == 0 or thisyear % 4 ==0 and thisyear % 100 <> 0: #判断闰年条件, 满足模400为0, 或者模4为0但模100不为0
   9     print 'this year %s is a leap year' % thisyear
  10 else:
  11     print 'this year %s is not a leap year' % thisyear

 

请回复一个初学者的疑问：

为什么输入

if thisyear % 400 == 0 or thisyear % 4 ==0 and thisyear % 100 <> 0:

这一行之后回车就出错呢？

谢谢！

 

[@@]

In [12]: import time

In [13]: thisyear = time.localtime()[0]

In [14]: if thisyear % 400 == 0 or thisyear % 4 ==0 and thisyear % 100 <> 0:
....: print 'this year %s is a leap year' % thisyear
....: else:
....: print 'this year %s is not a leap year' % thisyear
....:
this year 2009 is not a leap year


没错阿

2009/11/6 Michael He <heyanpi...@gmail.com>:

[Hu.Ziming]

> 请回复一个初学者的疑问：
> 为什么输入
> if thisyear % 400 == 0 or thisyear % 4 ==0 and thisyear % 100 <> 0:
> 这一行之后回车就出错呢？

报的什么错？

> 谢谢！
>
>
> >
>

[Jiahua Huang]

妳好歹得将错误信息贴出来吧，

不然神也不知道妳在说些什么

2009/11/6 Michael He <heyanpi...@gmail.com>

[Michael He]

Thank you for your reply!
The problem only happened in Windows. <> can not use in Windows? I
replaced <> with !=, then the problem is solved.
Now I study Python in Ubuntu.
The <> can use now.
Thank you again. I love your book.

On 11月7日, 下午5时53分, Jiahua Huang <jhuangjia...@gmail.com> wrote:
> 妳好歹得将错误信息贴出来吧，
>
> 不然神也不知道妳在说些什么
>

> 2009/11/6 Michael He <heyanpingli...@gmail.com>

[Hu.Ziming]

2009/11/9 Michael He <heyanpi...@gmail.com>:

> Thank you for your reply!
> The problem only happened in Windows. <> can not use in Windows? I
> replaced <> with !=, then the problem is solved.
> Now I study Python in Ubuntu.
> The <> can use now.
> Thank you again. I love your book.

windows下两个都不出错啊：
>>> thisyear = 2000
>>> if thisyear % 400 == 0 or thisyear % 4 ==0 and thisyear % 100 <> 0: print thisyear
...
2000
>>> if thisyear % 400 == 0 or thisyear % 4 ==0 and thisyear % 100 != 0: print thisyear
...
2000

Python 2.6.3 (r263rc1:75186, Oct 2 2009, 20:40:30) [MSC v.1500 32 bit
(Intel)] on win32

[小人物小人物]

<>跟!=是一样的,我经常混着用

2009/11/9 Hu.Ziming <hzma...@gmail.com>

[Leo Jay]

2009/11/9 Michael He <heyanpi...@gmail.com>:

> Thank you for your reply!
> The problem only happened in Windows. <> can not use in Windows? I
> replaced <> with !=, then the problem is solved.
> Now I study Python in Ubuntu.
> The <> can use now.
> Thank you again. I love your book.
>

你在windows下的版本是3.1, <>这个操作符在3.0版本里去掉了:
http://docs.python.org/3.1/whatsnew/3.0.html#removed-syntax

以后只能使用!=了

--
Best Regards,
Leo Jay

[winy wind]

2009/11/9 Leo Jay <python...@gmail.com>