使用 Python 替换 csv 文件列中的模式

Question

我在 python 中寻求有关编辑 CSV 的帮助。我有一个格式如下的文件

Account	InstanceId	InstanceName	InstanceType	Platform	Status	AvailabilityZone	PrivateIpAddress	publicIpAdress	Owner
12345678901	i-0abcdef1234567890	Test123	t3a.micro	windows	stopped	ap-southeast-2a	10.0.0.100		arn:aws:sts::12345678901:user/test-user
98765432109	i-0987654321abcdefg	test345	t2.nano	Linux	running	ap-southeast-2b	10.0.0.200	99.99.99.100	arn:aws:sts::98765432109:assumed-role/testrole/user@example.com
98765432109	i-abcdefghij01234899	test987	t2.nano	windows	running	ap-southeast-2b	10.0.0.201

我想就地编辑此文件，并使生成的文件格式如下

Account	InstanceId	InstanceName	InstanceType	Platform	Status	AvailabilityZone	PrivateIpAddress	publicIpAdress	Owner
12345678901	i-0abcdef1234567890	Test123	t3a.micro	windows	stopped	ap-southeast-2a	10.0.0.100		test-user
98765432109	i-0987654321abcdefg	test345	t2.nano	Linux	running	ap-southeast-2b	10.0.0.200	99.99.99.100	user@example.com
98765432109	i-abcdefghij01234899	test987	t2.nano	windows	running	ap-southeast-2b	10.0.0.201

我尝试了一些事情但没有成功，如果你能帮助我，我将不胜感激。提前致谢。

Answer 1

使用：

df['Owner'] = df['Owner'].str.split('/').str[-1]

示范：

df = pd.DataFrame({'Owner': ['arn:aws:sts::12345678901:user/test-user']})
df['Owner'].str.split('/').str[-1]

输出：

Replace a pattern in column of a csv file using Python