如何使用姓氏和名字对列表进行排序

Question

I have a list like L=['john fwtiou','nick dallas','kostas papadopoulos'] How do I sort it by the last names? the right should be first nick dallas then john fwtiou and then kostas papadopoulos

Answer 1

Simple solution using sorted() .

>>> sorted(l, key=lambda name: name.split()[1])
['nick dallas', 'john fwtiou', 'kostas papadopoulos']

Answer 2

Try the following:

 L = ['john fwtiou','nick dallas','kostas papadopoulos']
 L_sorted = sorted(L, key=lambda name: name[name.find(' ')+1])
 print(L_sorted)

Explanation: name[name.find(' ')+1] finds the first letter after the space. The sorted function then takes the list and sorts it with that as a custom key.