python - 用大写单词拆分一串单词

Question

我有一组名字，其中姓氏大写，名字和中间名是正常的，例如

OBAMA Barack
DEL MONTE Alfredo

我想把这些分成

"OBAMA", "Barack"
"DEL MONTE", "Alfredo"

实现这一目标的pythonic方法是什么？

Answer 1

>>> import itertools
>>> [
...    ' '.join(items)
...    for _, items in itertools.groupby('DEL MONTE Alfredo'.split(), str.isupper)
... ]
['DEL MONTE', 'Alfredo']

Answer 2

def split_names(names):
    for s in names:
        last_names = []
        name_parts = s.split()
        while name_parts and name_parts[0].isupper():
            last_names.append(name_parts.pop(0))
        yield ' '.join(last_names), ' '.join(name_parts)


names = ["OBAMA Barack", "DEL MONTE Alfredo"]
for last_name, first_name in split_names(names):
    print last_name
    print first_name
    print

印刷：

OBAMA
Barack

DEL MONTE
Alfredo

Answer 3

您可以使用一个简单的正则表达式：

import re

a = "DEL MONTE Alfredo"
first, last = re.match(r'([A-Z ]+)\s+(.+)', a).groups()

或遍历单词列表并过滤掉全部大写的单词：

first = ' '.join(w for w in a.split() if w.isupper())
last =  ' '.join(w for w in a.split() if not w.isupper())

在我个人看来，“最pythonic”===“最简单”。

Answer 4

试试这个：

(?![A-Z][a-z])([A-Z ]+) ([A-Z][a-z]+)