import argparse
import subprocess
import os

commandLineArgumentParser = argparse.ArgumentParser()
commandLineArgumentParser.add_argument("-fname", "--fname",help="first name")
commandLineArgumentParser.add_argument("-lname","--lname", help="last name")
commandLineArgumentParser.add_argument("-age","--age", help="age")
commandLineArguments = commandLineArgumentParser.parse_args()

fname = commandLineArguments.fname
lname = commandLineArguments.lname
age = commandLineArguments.age

print "%sn%s" %(fname,lname,age)

python test.py -fname=abc -age=22 -lname='test a'
or
python test.py -fname="abc test" lname='val' -age=30
or
python test.py -age=45 -lname='abc aa' fname="abc"
or
python test.py -age=45 -lname="test"

-fname=abc -age=22 -lname='test a'

-fname="abc test" lname='val' -age=30