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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 upgrade_packages():
 """ apt-get update and apt-get upgrade """

    if env.verbosity:
        print env.host, "apt-get UPDATING and UPGRADING SERVER PACKAGES"
        print " * running apt-get update "
    sudo('apt-get -qqy update')
    if env.verbosity:
        print " * running apt-get upgrade"
        print " NOTE: apt-get upgrade has been known in rare cases to require user input."
        print "If apt-get upgrade does not complete within 15 minutes"
        print "see troubleshooting docs *before* aborting the process to avoid package management corruption."
    sudo('apt-get -qqy upgrade')