'Describe specified users.
**Required Permissions**: To use this action, an IAM user must
have an attached policy that explicitly grants permissions.
For more information on user permissions, see `Managing User
Permissions`_.
:type iam_user_arns: list
:param iam_user_arns: An array of IAM user ARNs that identify the users
to be described.'

def describe_user_profiles(self, iam_user_arns=None):

    params = {}
    if (iam_user_arns is not None):
        params['IamUserArns'] = iam_user_arns
    return self.make_request(action='DescribeUserProfiles', body=json.dumps(params))
