AWS IAM Policy body with Python and boto3

boto3_getpolicy.py

import boto3

iam = boto3.resource('iam')

def get_policy_body(arn, version_id=None):
    """ Return IAM Policy JSON body """
    if version_id:
        version = iam.PolicyVersion(arn, version_id)
    else:
        policy = iam.Policy(arn)
        version = policy.default_version
    return version.document

POLICY_ARN = "YOUR_POLICY_ARN"
body = get_policy_body(POLICY_ARN)  # already a dict

print("Policy body: %s" % body)