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def usage2(argv):
    ss_env = ''
    ss_name = ''
    assume_yes = ''
    opts, args = getopt.getopt(argv, "he:s:a", ["environment", "system", "assume-yes"])
    
    for opt, arg in opts:
        if opt == '-h':
            usage()
        elif opt in ("-e", "--environment"):
            ss_env = arg
        elif opt in ("-s", "--system"):
            ss_name = arg
        elif opt in ("-a", "--assume-yes"):
            assume_yes = True
    print('Environment is', ss_env)
    print('System is', ss_name)
    print('assume_yes is', assume_yes)


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When I call it with: python script.py -e dev -s system1
I get:
Environment is dev
System is system1
assume_yes is

But when I call it with: python script --environment dev --system system1
I get:
Environment is 
System is 
assume_yes is