如何获取单词之后和字符之前的列表

Question

我现在有这个字符串，我想把名字提取出来，例如，Garet Hayes，Ronald Allen等。

Executives
Garet Hayes - Director, Public Relations
Ronald Allen - Chief Executive Officer
Gilbert Danielson - Executive Vice President and Chief Financial Officer
Steven Michaels - President
John Robinson - Executive Vice President and President and Chief Executive Officer, Progressive Finance Holdings LLC

我可以通过下面的代码提取名字，Garet Hayes：

def partiesExtractor(doc):
    executives = []
    executives.append(doc[doc.lower().index('executives') + len('executives') + 1 : doc.index(' -')])
    return executives

但我觉得应该有一种更有效的方法，即使只是获得第一个名字，更不用说第二个或名单的其余部分了。我该怎么做呢？

Answer 1

你需要将你的内容分成几行，然后对每一行用破折号拆分，并保留第一部分

def partiesExtractor(doc):
    executives = []
    for line in doc.splitlines()[1:]:
        executives.append(line.split("-")[0].strip())
    return executives
    # return [line.split("-")[0].strip() for line in doc.splitlines()[1:]] # list-comprenhension


text = """Executives
Garet Hayes - Director, Public Relations
Ronald Allen - Chief Executive Officer
Gilbert Danielson - Executive Vice President and Chief Financial Officer
Steven Michaels - President
John Robinson - Executive Vice President and President and Chief Executive 
Officer, Progressive Finance Holdings LLC"""

print(partiesExtractor(text))  # ['Garet Hayes', 'Ronald Allen', 'Gilbert Danielson', 'Steven Michaels', 'John Robinson']

您也可以使用regex

def partiesExtractor(doc):
    return re.findall("^[A-Z][a-z]+ [A-Z][a-z]+", doc, flags=re.MULTILINE)

Answer 2

与使用列表理解的@azro类似的解决方案：

def partiesExtractor(doc):
  return [line.split(" - ")[0] for line in doc.split("\n")[1:]]

Answer 3

使用正则表达式：

import re

s = '''Executives
Garet Hayes - Director, Public Relations
Ronald Allen - Chief Executive Officer
Gilbert Danielson - Executive Vice President and Chief Financial Officer
Steven Michaels - President
John Robinson - Executive Vice President and President and Chief Executive Officer, Progressive Finance Holdings LLC'''

reg = '(\w+\s\w+)\s-\s'

names = re.findall(reg,s)
print(names)

['Garet Hayes', 'Ronald Allen', 'Gilbert Danielson', 'Steven Michaels', 'John Robinson']