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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_iam_account(l, args, user_name):
 """Return the local Account for a user name, by fetching User and looking up the arn. """


    iam = get_resource(args, 'iam')
    user = iam.User(user_name)
    user.load()

    return l.find_or_new_account(user.arn)