我知道如何用(简单)键=函数自定义排序。但是如果我需要一个更复杂的key=函数,怎么做呢。我很难把它组装起来。在
以下是片段: 在第一个示例中,我使用key=语言环境.strxfrm这就足够了。第二个示例使用另一个key=函数(itemgetter)。但我需要两者都在一起。在
import locale
import operator
locale.setlocale(locale.LC_ALL, "")
# on my computer: German_Germany.1252
lastnames = ["Bange", "Änger", "Amman", "Änger", "Zelch", "Ösbach"]
print(sorted(lastnames, key=locale.strxfrm)) # sorted correct
# alphabetically for Germany
print()
lastnames_firstnames_groups =[
["Bange", "Michael", 2],
["Änger", "Ämma", 2],
["Amman", "Anton", 1],
["Änger", "Chris", 2],
["Zelch", "Sven", 1],
["Ösbach", "Carl", 1]
]
print(sorted(lastnames_firstnames_groups, key=operator.itemgetter(2,0,1)))
# The result is sorted as I expected (the german umlaute are NOT sorted
# the correct way). Is there a way to "add" the string tranformation strxfrm
# as in the first example to this.
有什么提示吗?在
对连续键、转换键和有序键使用strxfrm:
听起来你可能想要
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