我知道如何使用(简单的)key=function 自定义排序。但如果我需要一个更复杂的 key= 函数，该怎么做呢？我在将它们组合在一起时遇到问题。
这是片段: 在第一个示例中，我使用 key=locale.strxfrm，这足以满足此目的。第二个例子我使用另一个 key= 函数(itemgetter)。但我需要两者一起。
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？
最佳答案
听起来你可能想要
print(
sorted(
lastnames_firstnames_groups,
key=lambda t: (t[2], strxfrm(t[0]), strxfrm(t[1]))
)
)
关于python - 使用键和区域设置对列表进行排序(此处为 : german umlauts)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/25056907/