在Python中从csv中提取关键字

import csv
import re

with open('file.csv', 'r') as file:
    reader = csv.reader(file)
    data = list(reader)

keywords = []
for row in data:
    for cell in row:
        words = re.findall(r'\b\w+\b', cell)
        keywords.extend(words)

keywords = list(set(keywords))

for keyword in keywords:
    print(keyword)