how to use argv in python code example

Example 1: python read arguments

#!/usr/bin/python

import sys

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

Example 2: python sys.argv

def add(a, b):
  return a + b

"""
You need to execute the script add.py as follows:
'python add.py 5 2'
The 'sys.argv[0]' is the name of your script,
so you need to get the second and the third one.
"""

print(add(int(sys.argv[1]), int(sys.argv[2])))

"""
With the command: 'python add.py 5 2',
this python script will returns 7
"""

Example 3: argv in python

#argv in python


import sys

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

#command in cmd :
$ python test.py arg1 arg2 arg3

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

Example 4: argv python function

# arguments
def test_var_args(f_arg, *argv):
    print("first normal arg:", f_arg)
    for arg in argv:
        print("another arg through *argv :", arg)

test_var_args('yasoob','python','eggs','test')

# keywork arguments
def test_var_kwargs(f_arg, **kwargs):
  	print(f_arg)
    for (key, item) in kwargs.items():
      	print("Keyword: ", key)
        print("Value: ", item)

test_var_kwargs('yasoob', x = 12)