使用如下代码片段,我们可以捕获 AWS 异常:
from aws_utils import make_session
session = make_session()
cf = session.resource("iam")
role = cf.Role("foo")
try:
role.load()
except Exception as e:
print(type(e))
raise e
返回的错误类型为 botocore.errorfactory.NoSuchEntityException
。但是,当我尝试导入此异常时,我得到了:
>>> import botocore.errorfactory.NoSuchEntityException
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named NoSuchEntityException
我能找到的捕获此特定错误的最佳方法是:
from botocore.exceptions import ClientError
session = make_session()
cf = session.resource("iam")
role = cf.Role("foo")
try:
role.load()
except ClientError as e:
if e.response["Error"]["Code"] == "NoSuchEntity":
# ignore the target exception
pass
else:
# this is not the exception we are looking for
raise e
但这看起来很“hackish”。有没有办法在boto3中直接导入并捕获ClientError
的特定子类?
编辑:请注意,如果您以第二种方式捕获错误并打印类型,它将是 ClientError
。
最佳答案
如果您使用的是 client你可以像这样捕获异常:
import boto3
def exists(role_name):
client = boto3.client('iam')
try:
client.get_role(RoleName='foo')
return True
except client.exceptions.NoSuchEntityException:
return False
关于python - 捕获 boto3 ClientError 子类,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43354059/