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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 login_exists(login, domain='', **kwargs):
    '''
    Find if a login exists in the MS SQL server.
    domain, if provided, will be prepended to login

    CLI Example:

    .. code-block:: bash

        salt minion mssql.login_exists 'LOGIN'
    '''
    if domain:
        login = '{0}\\{1}'.format(domain, login)
    try:
        # We should get one, and only one row
        return len(tsql_query(query="SELECT name FROM sys.syslogins WHERE name='{0}'".format(login), **kwargs)) == 1

    except Exception as e:
        return 'Could not find the login: {0}'.format(e)