使用re.findall在不带括号的数据框中创建新列

import re
import pandas as pd

data = {'text': ['This is a (sample) text', 'Another [example] text', 'No brackets here']}
df = pd.DataFrame(data)

def extract_text(row):
    pattern = r'\b\w+\b'  # 正则表达式模式，匹配单词
    text = row['text']
    matches = re.findall(pattern, text)
    return ' '.join(matches)  # 将匹配到的单词用空格连接起来

df['new_column'] = df.apply(extract_text, axis=1)