sys argv code example

Example 1: python get command line arguments

import sys
print("This is the name of the script:", sys.argv[0])
print("Number of arguments:", len(sys.argv))
print("The arguments are:" , str(sys.argv))

#Example output
#This is the name of the script: sysargv.py
#Number of arguments in: 3
#The arguments are: ['sysargv.py', 'arg1', 'arg2']

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: python sys

import sys
print('Python version you are using')
print(sys.version)
print('Informantion')
print(sys.version_info)

Example 4: python sys.argv exception

try:
    filename = sys.argv[1]
except IndexError:
    print "You did not specify a file"
    sys.exit(1)

Example 5: how to take a list as input in python using sys.srgv

argv = sys.argv[1:]

Example 6: argc python

len(sys.argv)