AWS Cognito - Get token with ADMIN_NO_SRP_AUTH (Python)

try:
    return boto3.Session(profile_name=’[PROFILE_NAME]’)

.client('cognito-idp', [REGION]).admin_initiate_auth(
        UserPoolId=[USER_POOL_ID],
        ClientId=[CLIENT_ID],
        AuthFlow='ADMIN_NO_SRP_AUTH',
        AuthParameters={
            'USERNAME': [USER_NAME],
            'PASSWORD': [PASSWORD],
            'SECRET_HASH': get_secret_hash([UserName])
        }
    )
except botocore.exceptions.ClientError as e:
    return e.response

# creating secret hash

def get_secret_hash(self, username):
    message = username + self.client_id
    dig = hmac.new(bytes(self.client_secret, encoding='utf-8'), msg=message.encode('UTF-8'),
                   digestmod=hashlib.sha256).digest()
    hash_is = base64.b64encode(dig).decode()
    return hash_is