# Listing project policies (SDK)
You can use the [ListProjectPolicies](https://docs.aws.amazon.com/rekognition/latest/APIReference/API_ListProjectPolicies) operation to list the project policies that are attached to an Amazon Rekognition Custom Labels project.
**To list the project policies attached to a project (SDK)**
1. If you haven't already done so, install and configure the AWS CLI and the AWS SDKs. For more information, see [Step 4: Set up the AWS CLI and AWS SDKs](su-awscli-sdk.md).
1. Use the following code to list the project policies.
------
#### [ AWS CLI ]
Change `project-arn` to the Amazon Resource Name of the project for which you want to list the attached project policies.
```
aws rekognition list-project-policies \
--project-arn project-arn \
--profile custom-labels-access
```
------
#### [ Python ]
Use the following code. Supply the following command line parameters:
+ project\$1arn — the Amazon Resource Name of the project for which you want to list the attached project policies.
For example: `python list_project_policies.py project_arn `
```
# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
"""
Purpose
Amazon Rekognition Custom Labels model example used in the service documentation:
https://docs.aws.amazon.com/rekognition/latest/customlabels-dg/md-copy-model-sdk.html
Shows how to list the project policies in an Amazon Rekogntion Custom Labels project.
"""
import argparse
import logging
import boto3
from botocore.exceptions import ClientError
logger = logging.getLogger(__name__)
def display_project_policy(project_policy):
"""
Displays information about a Custom Labels project policy.
:param project_policy: The project policy (ProjectPolicy)
that you want to display information about.
"""
print(f"Policy name: {(project_policy['PolicyName'])}")
print(f"Project Arn: {project_policy['ProjectArn']}")
print(f"Document: {(project_policy['PolicyDocument'])}")
print(f"Revision ID: {(project_policy['PolicyRevisionId'])}")
print()
def list_project_policies(rek_client, project_arn):
"""
Describes an Amazon Rekognition Custom Labels project, or all projects.
:param rek_client: The Amazon Rekognition Custom Labels Boto3 client.
:param project_arn: The Amazon Resource Name of the project you want to use.
"""
try:
max_results = 5
pagination_token = ''
finished = False
logger.info("Listing project policies in: %s.", project_arn)
print('Projects\n--------')
while not finished:
response = rek_client.list_project_policies(
ProjectArn=project_arn, MaxResults=max_results, NextToken=pagination_token)
for project in response['ProjectPolicies']:
display_project_policy(project)
if 'NextToken' in response:
pagination_token = response['NextToken']
else:
finished = True
logger.info("Finished listing project policies.")
except ClientError as err:
logger.exception(
"Couldn't list policies for - %s: %s",
project_arn,err.response['Error']['Message'])
raise
def add_arguments(parser):
"""
Adds command line arguments to the parser.
:param parser: The command line parser.
"""
parser.add_argument(
"project_arn", help="The Amazon Resource Name of the project for which you want to list project policies."
)
def main():
logging.basicConfig(level=logging.INFO,
format="%(levelname)s: %(message)s")
try:
# get command line arguments
parser = argparse.ArgumentParser(usage=argparse.SUPPRESS)
add_arguments(parser)
args = parser.parse_args()
print(f"Listing project policies in: {args.project_arn}")
# List the project policies.
session = boto3.Session(profile_name='custom-labels-access')
rekognition_client = session.client("rekognition")
list_project_policies(rekognition_client,
args.project_arn)
except ClientError as err:
print(f"Problem list project_policies: {err}")
if __name__ == "__main__":
main()
```
------
#### [ Java V2 ]
Use the following code. Supply the following command line parameters:
+ project\$1arn — The ARN of the project that has the project polices you want to list.
```
/*
Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package com.example.rekognition;
import java.util.logging.Level;
import java.util.logging.Logger;
import software.amazon.awssdk.auth.credentials.ProfileCredentialsProvider;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.rekognition.RekognitionClient;
import software.amazon.awssdk.services.rekognition.model.ListProjectPoliciesRequest;
import software.amazon.awssdk.services.rekognition.model.ListProjectPoliciesResponse;
import software.amazon.awssdk.services.rekognition.model.ProjectPolicy;
import software.amazon.awssdk.services.rekognition.model.RekognitionException;
public class ListProjectPolicies {
public static final Logger logger = Logger.getLogger(ListProjectPolicies.class.getName());
public static void listMyProjectPolicies(RekognitionClient rekClient, String projectArn) {
try {
logger.log(Level.INFO, "Listing project policies for project: {0}", projectArn);
// List the project policies.
Boolean finished = false;
String nextToken = null;
while (Boolean.FALSE.equals(finished)) {
ListProjectPoliciesRequest listProjectPoliciesRequest = ListProjectPoliciesRequest.builder()
.maxResults(5)
.projectArn(projectArn)
.nextToken(nextToken)
.build();
ListProjectPoliciesResponse response = rekClient.listProjectPolicies(listProjectPoliciesRequest);
for (ProjectPolicy projectPolicy : response.projectPolicies()) {
System.out.println(String.format("Name: %s", projectPolicy.policyName()));
System.out.println(String.format("Revision ID: %s\n", projectPolicy.policyRevisionId()));
}
nextToken = response.nextToken();
if (nextToken == null) {
finished = true;
}
}
logger.log(Level.INFO, "Finished listing project policies for project: {0}", projectArn);
} catch (
RekognitionException e) {
logger.log(Level.SEVERE, "Client error occurred: {0}", e.getMessage());
throw e;
}
}
public static void main(String args[]) {
final String USAGE = "\n" + "Usage: " + " \n\n" + "Where:\n"
+ " project_arn - The ARN of the project with the project policies that you want to list.\n\n";
;
if (args.length != 1) {
System.out.println(USAGE);
System.exit(1);
}
String projectArn = args[0];
try {
RekognitionClient rekClient = RekognitionClient.builder()
.credentialsProvider(ProfileCredentialsProvider.create("custom-labels-access"))
.region(Region.US_WEST_2)
.build();
// List the project policies.
listMyProjectPolicies(rekClient, projectArn);
rekClient.close();
} catch (RekognitionException rekError) {
logger.log(Level.SEVERE, "Rekognition client error: {0}", rekError.getMessage());
System.exit(1);
}
}
}
```
------