snapshots-by-ec2-name.py

import boto3
ec2Client = boto3.client('ec2')
ec2Resource = boto3.resource('ec2')
for instance in ec2Resource.instances.all():
  for tag in instance.tags:
    if tag['Key'] == 'Name':
      list_of_snapshots = []
      check_value = []
      check_value.append(tag['Value'] + '*')
      snapshotsByTag = ec2Client.describe_snapshots(Filters=[{'Name':'tag:Name', 'Values': [check_value[0]]}])['Snapshots']
      snapshotsByDescription = ec2Client.describe_snapshots(Filters=[{'Name':'description', 'Values': [check_value[0]]}])['Snapshots']
      for tag in instance.tags:
        if tag['Key'] == 'Environment':
          for snapshot in snapshotsByTag:
            if snapshot:
              list_of_snapshots.append(snapshot['SnapshotId'])
              ec2Client.create_tags(Resources=[snapshot['SnapshotId']], Tags=[{'Key':'Environment', 'Value':tag['Value']}], DryRun=False)
          for snapshot in snapshotsByDescription:
            if snapshot:
              ec2Client.create_tags(Resources=[snapshot['SnapshotId']], Tags=[{'Key':'Environment', 'Value':tag['Value']}], DryRun=False)