CODEWITHSUNDEEP
pythonamazon-web-servicesboto3
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Reputation: 5117

AWS - Does not recognise access key ID and secret access key

I am using AWS, boto3 and Pycharm to write a very simple program on python that compare one faces from one face image to another face from another face image. I written the following simple source code:

import boto3

s3 = boto3.resource('s3',
                    aws_access_key_id = "xxx",
                    aws_secret_access_key = "yyy")

BUCKET = "eyeglasses-images"
KEY_SOURCE = "Foucault.jpg"
KEY_TARGET = "Ricoeur.jpg"


def compare_faces(bucket, key, bucket_target, key_target, threshold=80, region="eu-west-1"):
    rekognition = boto3.client("rekognition", region)
    response = rekognition.compare_faces(
        SourceImage={
            "S3Object": {
                "Bucket": bucket,
                "Name": key,
            }
        },
        TargetImage={
            "S3Object": {
                "Bucket": bucket_target,
                "Name": key_target,
            }
        },
        SimilarityThreshold=threshold,
    )
    return response['SourceImageFace'], response['FaceMatches']


source_face, matches = compare_faces(BUCKET, KEY_SOURCE, BUCKET, KEY_TARGET)

# the main source face
print
"Source Face ({Confidence}%)".format(**source_face)

# one match for each target face
for match in matches:
    print
    "Target Face ({Confidence}%)".format(**match['Face'])
    print
    "  Similarity : {}%".format(match['Similarity'])

However I get the following error:

raise NoCredentialsError
botocore.exceptions.NoCredentialsError: Unable to locate credentials

(Obviously in the place of xxx and yyy I am using the real keys)

What is the problem and how can I fix this?

Upvotes: 0

Views: 1364

Answers (2)

krishna_mee2004
krishna_mee2004

Reputation: 7356

The issue is in the line: rekognition = boto3.client("rekognition", region)

Because you did not specify the keys here, boto3 is trying to find the credentials file in ~/.aws. Update this to use the session object as mentioned by Aniket. Your code should change to:

session = boto3.session.Session(
    aws_access_key_id=ACCESS_KEY,
    aws_secret_access_key=SECRET_KEY
)
rekognition = session.client("rekognition", region)

Upvotes: 0

Aniket Thakur
Aniket Thakur

Reputation: 68905

You can use session first. Eg.

session = boto3.Session(
    aws_access_key_id=ACCESS_KEY,
    aws_secret_access_key=SECRET_KEY,
    aws_session_token=SESSION_TOKEN,
)

and then get your resource

s3 = session.resource('s3')

Note that aws_session_token is optional and will be used if you use STS to get temp sessions.

Just saying

s3 = boto3.client('s3')
s3 = boto3.resource('s3')

will use default creds in ~/.aws/credentials file. So it cannot be used in your case.

It would be good if you can directly use -

s3 = boto3.client(
    's3',
    # Hard coded strings as credentials, not recommended.
    aws_access_key_id='xx',
    aws_secret_access_key='yy'
)

For more details refer - boto3 configuration documentation

Upvotes: 1

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