Python Boto3 script to find the number of minutes an instance has been running.

GetEC2RunTime.py

##
#  Python Boto3 script to find the number of minutes an instance has been running.
## Output
# i-00asdf5xxx50c96aa 84 days, 13:17:51.468559
# i-0260a1fxxx27ec894 6 days, 13:48:04.468643
# i-0acxxx6c630af322 13 days, 12:13:00.468659
# i-069bxxxd41bf975eb 19:42:08.468670

import boto3
from datetime import datetime, timezone

ec2 = boto3.client('ec2')

response = ec2.describe_instances (Filters=[
	{
		'Name': 'instance-state-name',
		'Values': ['running']
	}
])

for r in response['Reservations']:
	for instance in r['Instances']:
		diff_time = datetime.now(timezone.utc) - instance['LaunchTime'] 
		print (instance['InstanceId'],diff_time)