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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 create_server(cloud, **kwargs):
 """ Create a new instance """

    if cloud == 'ec2':
        _create_server_ec2(**kwargs)
    elif cloud == 'rackspace':
        _create_server_rackspace(**kwargs)
    elif cloud == 'gce':
        _create_server_gce(**kwargs)
    else:
        raise ValueError("Unknown cloud type: {}".format(cloud))