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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 prod():
 """Option to do something on the production server."""

    common_conf()
    env.user = settings.LOGIN_USER_PROD
    env.machine = 'prod'
    env.host_string = settings.HOST_PROD
    env.hosts = [env.host_string, ]