import argparse
def _GetOptionsParser():
"""Get the options parser."""
parser = argparse.ArgumentParser(description='Process some integers.')
parser.add_argument(
'--greeting',
dest='greeting',
action='store',
help=('If specified, use this input instead of asking.')
)
return parser
args = _GetOptionsParser().parse_args()
greeting = args.greeting
print greeting
if not greeting:
greeting = raw_input("Give me the greeting. ")
print "The greeting is: ", greeting