使用python pandas将列中的动态超链接替换为null

import pandas as pd
import re

df = pd.read_csv('data.csv')

def replace_dynamic_links(value):
    if pd.isnull(value):
        return value
    else:
        return re.sub('<a.*?>.*?</a>', 'null', value)

df['column_name'] = df['column_name'].apply(replace_dynamic_links)

import pandas as pd
import re

def replace_dynamic_links(value):
    if pd.isnull(value):
        return value
    else:
        return re.sub('<a.*?>.*?</a>', 'null', value)

df = pd.read_csv('data.csv')
df['column_name'] = df['column_name'].apply(replace_dynamic_links)