old_contents: import boto3
  import botocore
  import time
  
  ec2 = boto3.resource('ec2', region_name='us-east-1')
  client = boto3.client('ec2')
  
  # Create a security group
  try:
      sg = ec2.create_security_group(GroupName='jupyter', Description='EC2 for Jupyter Notebook')
      response = client.authorize_security_group_ingress(GroupName='jupyter', IpPermissions=[{'PrefixListIds': [], 'UserIdGroupPairs': [], 'IpRanges': [{'CidrIp': '0.0.0.0/0'}], 'IpProtocol': 'tcp', 'Ipv6Ranges': [{'CidrIpv6': '::/0'}], 'ToPort': 8888, 'FromPort': 8888}])
      print("create a security group")
  except botocore.exceptions.ClientError as e:
      sg = client.describe_security_groups(GroupNames=['jupyter'])
      print("the security group exist")
  
  o = ec2.create_instances(ImageId='ami-e36637f5', MinCount=1, MaxCount=1, InstanceType='i3.xlarge', SecurityGroups=['jupyter'])
  print_res = False
  while (not print_res):
      time.sleep(1)
      for i in ec2.instances.filter(InstanceIds=[o[0].id]):
          if i.public_ip_address is not None:
              print("The public IP address: " + str(i.public_ip_address))
              print_res = True
  
new_contents: import boto3
  import botocore
  import time
  
  ec2 = boto3.resource('ec2', region_name='us-east-1')
  client = boto3.client('ec2')
  
  # Create a security group
  try:
      sg = ec2.create_security_group(GroupName='jupyter', Description='EC2 for Jupyter Notebook')
      response = client.authorize_security_group_ingress(GroupName='jupyter', IpPermissions=[{'PrefixListIds': [], 'UserIdGroupPairs': [], 'IpRanges': [{'CidrIp': '0.0.0.0/0'}], 'IpProtocol': 'tcp', 'Ipv6Ranges': [{'CidrIpv6': '::/0'}], 'ToPort': 8888, 'FromPort': 8888}])
      print("create a security group")
  except botocore.exceptions.ClientError as e:
      sg = client.describe_security_groups(GroupNames=['jupyter'])
      print("the security group exist")
  
  o = ec2.create_instances(ImageId='ami-622a0119', MinCount=1, MaxCount=1, InstanceType='i3.8xlarge', SecurityGroups=['jupyter'])
  print_res = False
  while (not print_res):
      time.sleep(1)
      for i in ec2.instances.filter(InstanceIds=[o[0].id]):
          if i.public_ip_address is not None:
              print("The public IP address: " + str(i.public_ip_address))
              print_res = True
  
subject: Update the script to create EC2 instance.