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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_usernames_like(username,**kwargs):
 """ Return a list of usernames like the given string. """

    checkname = "%%%s%%"%username
    rs = db.DBSession.query(User.username).filter(User.username.like(checkname)).all()
    return [r.username for r in rs]