Python帮助在连字符后进行排序

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我正在从json请求获取数据.我在这里使用这些行来遍历我的json对象并删除重复项,然后按第一个字符对其进行排序：

 for x in resources:  
 roads.append( os.linesep + x["description"])   
 TrafficHome = list(set(roads))  
 TrafficHome.sort()  

运行这些文件后,我将得到如下输出：

[u'\r\nAt I-55 - Construction work.', u'\r\nAt Willow Ave - Accident.', u'\r\nAt Wolf Rd/Exit 16 - Accident.', u'\r\nBetween 55th St and Plainfield Rd - Roadwork.', u'\r\nBetween County Farm Rd and Windermere Dr - Roadwork.', u'\r\nBetween Geneva Rd and St Charles Rd - Roadwork.', u'\r\nBetween Jeans Rd and Knoll Wood Rd - Roadwork.', u'\r\nBetween Knoll Wood Rd and Jeans Rd - Roadwork.', u'\r\nBetween Lavergne Ave and Roy Ave - Construction work.', u'\r\nBetween Roy Ave and Lavergne Ave - Construction work.', u'\r\nBetween St Charles Rd and Geneva Rd - Roadwork.', u'\r\nBetween Windermere Dr and County Farm Rd - Roadwork.']

然后运行以下行：

TrafficHome = ' '.join(map(str, TrafficHome))

然后我有一个像这样的字符串：

At I-55 – Construction work.
At Willow Ave – Accident.
At Wolf Rd/Exit 16 – Accident.
Between 55th St and Plainfield Rd – Roadwork.
Between County Farm Rd and Windermere Dr – Roadwork.
Between Geneva Rd and St Charles Rd – Roadwork.
Between Jeans Rd and Knoll Wood Rd – Roadwork.
Between Knoll Wood Rd and Jeans Rd – Roadwork.
Between Lavergne Ave and Roy Ave – Construction work.
Between Roy Ave and Lavergne Ave – Construction work.
Between St Charles Rd and Geneva Rd – Roadwork.
Between Windermere Dr and County Farm Rd – Roadwork.

我想像这样在连字符后面按字母顺序对它进行排序：

At Willow Ave – Accident.
At Wolf Rd/Exit 16 – Accident.
At I-55 – Construction work.
Between Lavergne Ave and Roy Ave – Construction work.
Between Roy Ave and Lavergne Ave – Construction work.
Between 55th St and Plainfield Rd – Roadwork.
Between County Farm Rd and Windermere Dr – Roadwork.
Between Geneva Rd and St Charles Rd – Roadwork.
Between Jeans Rd and Knoll Wood Rd – Roadwork.
Between Knoll Wood Rd and Jeans Rd – Roadwork.
Between St Charles Rd and Geneva Rd – Roadwork.
Between Windermere Dr and County Farm Rd – Roadwork.

在某些情况下,可能会有2个连字符,例如：

At I-55 – Construction work.

因此,我需要考虑一下这一点,我不确定实现此目标的最佳方法.我不知道是否应该尝试操作字符串,或者在将其转换为字符串之前.我对python很陌生,并且将它用于Tasker任务,因为Javascript不适用于我.

任何帮助,指导或意见,我们将不胜感激！

解决方法:

使用lambda函数作为您sorted()中的键可以解决此问题.

sortedlist = sorted(list, lambda x: x.rsplit('-', 1)[-1])

在python 2.x上,您可能必须这样做：

sortedlist = sorted(list, key=lambda x: x.rsplit('-', 1)[-1])

rsplit(‘-‘,1)将您的列表分为2部分,从-的最后一个实例开始.只要您在字符串末尾的状态不包含连字符,就可以使用此方法.

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