python terminal give options code example

Example 1: read argument from terminal

#!/usr/bin/python

import sys

print 'Number of arguments:', len(sys.argv), 'arguments.'
print 'Argument List:', str(sys.argv)

#Terminal
# $ python test.py arg1 arg2 arg3

#print
#Number of arguments: 4 arguments.
#Argument List: ['test.py', 'arg1', 'arg2', 'arg3']

Example 2: run python with options

import argparse
import sys

parser = argparse.ArgumentParser(description="Does some awesome things.")
parser.add_argument('message', type=str, help="pass a message into the script")

if __name__ == '__main__':
    args = parser.parse_args(sys.argv[1:])
    print args.message