无法使用 Boto3 打印实例 ID

Question

I was trying to print the InstanceId followed by the VolumeID and state. I am able to print the 'VolumeID' and 'state' but I am getting an 'KeyError' while trying to print the 'InstanceID'. Not sure on what I am doing wrong here.

ec2 = boto3.client('ec2')
volumes = ec2.describe_volumes()

for i in volumes['Volumes']:
    print(i['InstanceId'])
    print(i['VolumeId'])
    print(i['State']) 

Answer 1

The InstanceId for the volume is on its attachments property , which is a list you can iterate through:

ec2 = boto3.client('ec2')
volumes = ec2.describe_volumes()

for i in volumes['Volumes']:
    for a in i.attachments:
        print(a['InstanceId'])
    print(i['VolumeId'])
    print(i['State'])