python(boto3)程序删除aws中的旧快照

Question

我已经编写了一个程序来删除旧快照。但是现在我的问题是如果快照附加了 ami 那么它不会被删除并且程序也会停止。它显示以下消息:

botocore.exceptions.ClientError: An error occurred (InvalidSnapshot.InUse) when calling the DeleteSnapshot operation: The snapshot snap-12345678 is currently in use by ami-12345

我希望程序单独跳过那些快照并继续删除其他快照。下面是我的代码:

import boto3
import datetime
client = boto3.client('ec2',region_name='us-west-1')
snapshots = client.describe_snapshots(OwnerIds=['12345678'])
for snapshot in snapshots['Snapshots']:
    a= snapshot['StartTime']
    b=a.date()
    c=datetime.datetime.now().date()
    d=c-b
    if d.days>10:
        id = snapshot['SnapshotId']
        client.delete_snapshot(SnapshotId=id)

Answer 1

我自己解决了。这是代码:

    import boto3
    import datetime
    client = boto3.client('ec2',region_name='us-west-1')
    snapshots = client.describe_snapshots(OwnerIds=['12345678'])
    for snapshot in snapshots['Snapshots']:
       a= snapshot['StartTime']
       b=a.date()
       c=datetime.datetime.now().date()
       d=c-b
       try:
        if d.days>10:
           id = snapshot['SnapshotId']
           client.delete_snapshot(SnapshotId=id)
       except Exception,e:
        if 'InvalidSnapshot.InUse' in e.message:
           print "skipping this snapshot"
           continue