Pandas 熊猫-根据特定关键字提取所有内容

我试图从数据框中提取所有内容，直到出现一个特定的单词。我试图提取整个内容，直到出现以下文字：

高、中、低

数据框中文本的示例视图：

text
Ticket creation dropped in last 24 hours medium range for cust_a
Calls dropped in last 3 months high range for cust_x

text, new_text
Ticket creation dropped in last 24 hours medium range for cust_a, Ticket creation dropped in last 24 hours
Calls dropped in last 3 months high range for cust_x, Calls dropped in last 3 months

预期输出：

text
Ticket creation dropped in last 24 hours medium range for cust_a
Calls dropped in last 3 months high range for cust_x

text, new_text
Ticket creation dropped in last 24 hours medium range for cust_a, Ticket creation dropped in last 24 hours
Calls dropped in last 3 months high range for cust_x, Calls dropped in last 3 months

---

IIUC，您需要

replace

和

regex

这样做的目的是匹配列表中的任何单词，然后替换它和后面的任何单词

我们使用

*

匹配任何内容，直到字符串结束

words = 'high, medium, low'
match_words = '|'.join(words.split(', '))
#'high|medium|low'

df['new_text'] = df['text'].str.replace(f"({match_words}).*",'',regex=True)


print(df['text_new'])

0    Ticket creation dropped in last 24 hours 
1              Calls dropped in last 3 months 
Name: text, dtype: object