python - 根据值索引和字母顺序对python字典进行排序

Question

我正在尝试对 Python 字典进行排序，但遇到了一些问题。字典采用以下格式:{UID: Name, Type}。

dic1={"720155": ["CAT", "Software"], "356d05": ["ESF", "Software"], "3b3758": ["DBA", "Software"], "9649db": ["Fun", "Software"], "96493f": ["Eagle", "Software"], "99701d": ["Pas", "Software"], "964971": ["Debug", "Software"], "b6f315": ["Bap", "Software"], "a0a824": ["Server", "Software"], "1e00sa": ["Adobe", "Software"], "8c8dd2": ["EXIT", "Software"], "cc1dfg": ["email", "Software"]}

我使用 sorted(dic1.iteritems(), key=operator.itemgetter(1)) 但这允许“电子邮件”项目放在最后，而不是在“调试”名称之后。见下文:

[('1e00sa', ['Adobe', 'Software']), 
('b6f315', ['Bap', 'Software']), 
('720155',['CAT', 'Software']), 
('3b3758', ['DBA', 'Software']), 
('964971', ['Debug', 'Software']), 
('356d05', ['ESF', 'Software']), 
('8c8dd2', ['EXIT', 'Software']), 
('96493f', ['Eagle', 'Software']), 
('9649db', ['Fun', 'Software']), 
('99701d', ['Pas', 'Software']), 
('a0a824', ['Server', 'Software']), 
('cc1dfg', ['email', 'Software'])]

我尝试使用 sorted(sorted(dic1.iteritems(), key=operator.itemgetter(1)), key=str.lower)，但这给出了一个错误，一个元组是收到而不是字符串。

有什么想法吗？我不能改变字典的构成方式，它必须保持原样。

Answer 1

你需要一个更复杂的键函数:

sorted(dic1.iteritems(), key=lambda i: i[1][0].lower())

这对值的第一个元素进行排序，小写。

演示:

>>> from pprint import pprint
>>> dic1={"720155": ["CAT", "Software"], "356d05": ["ESF", "Software"], "3b3758": ["DBA", "Software"], "9649db": ["Fun", "Software"], "96493f": ["Eagle", "Software"], "99701d": ["Pas", "Software"], "964971": ["Debug", "Software"], "b6f315": ["Bap", "Software"], "a0a824": ["Server", "Software"], "1e00sa": ["Adobe", "Software"], "8c8dd2": ["EXIT", "Software"], "cc1dfg": ["email", "Software"]}
>>> pprint(sorted(dic1.iteritems(), key=lambda i: i[1][0].lower()))
[('1e00sa', ['Adobe', 'Software']),
 ('b6f315', ['Bap', 'Software']),
 ('720155', ['CAT', 'Software']),
 ('3b3758', ['DBA', 'Software']),
 ('964971', ['Debug', 'Software']),
 ('96493f', ['Eagle', 'Software']),
 ('cc1dfg', ['email', 'Software']),
 ('356d05', ['ESF', 'Software']),
 ('8c8dd2', ['EXIT', 'Software']),
 ('9649db', ['Fun', 'Software']),
 ('99701d', ['Pas', 'Software']),
 ('a0a824', ['Server', 'Software'])]