import boto3
def common_patterns():
# Create a client
client = boto3.client('s3', region_name='us-west-2')
# Create a reusable Paginator
paginator = client.get_paginator('list_objects_v2')
# Create a PageIterator from the Paginator
page_iterator = paginator.paginate(Bucket='amzn-s3-demo-bucket')
for page in page_iterator:
print(page['Contents'])
paginator = client.get_paginator('list_objects_v2')
page_iterator = paginator.paginate(Bucket='amzn-s3-demo-bucket',
PaginationConfig={'MaxItems': 10})
def unknown_client(ec2_client):
# the argument could be an EC2 client like. But this is known only
# to the caller
# ec2_client = boto3.client('ec2')
# Get the paginator for the 'describe_instances' operation
paginator = ec2_client.get_paginator('describe_instances')
# Define any filters you want to apply (optional)
# For example, to filter by running instances:
filters = [
{
'Name': 'instance-state-name',
'Values': ['running']
}
]
# Use the paginator to iterate through pages of results
# You can also pass additional parameters to paginate(), such as MaxResults
page_iterator = paginator.paginate(Filters=filters)
# Iterate through each page and then through each reservation and instance
for page in page_iterator:
for reservation in page['Reservations']:
for instance in reservation['Instances']:
print(f"Instance ID: {instance['InstanceId']}")
print(f"Instance Type: {instance['InstanceType']}")
print(f"Launch Time: {instance['LaunchTime']}")
print(f"State: {instance['State']['Name']}")
print("-" * 20)
