python - Pandas :替换字符串中的子字符串

Question

我想替换 df 列中的子字符串 icashier.alipay.com

url
icashier.alipay.com/catalog/2758186/detail.aspx
icashier.alipay.com/catalog/2758186/detail.aspx
icashier.alipay.com/catalog/2758186/detail.aspx
vk.com

到 aliexpress.com。

欲望输出

aliexpress.com/catalog/2758186/detail.aspx
aliexpress.com/catalog/2758186/detail.aspx
aliexpress.com/catalog/2758186/detail.aspx
vk.com

我尝试 df['url'].replace('icashier.alipay.com', 'aliexpress.com', 'inplace=True') 但它返回 空数据框.

Answer 1

使用 replace用 dict 替换和 regex=True:

df['url'] = df['url'].replace({'icashier.alipay.com': 'aliexpress.com'}, regex=True)
print (df)
                                          url
0  aliexpress.com/catalog/2758186/detail.aspx
1  aliexpress.com/catalog/2758186/detail.aspx
2  aliexpress.com/catalog/2758186/detail.aspx
3                                      vk.com