python command line input code example

Example 1: pass argument to a py file

import sys

def hello(a,b):
    print "hello and that's your sum:", a + b

if __name__ == "__main__":
    a = int(sys.argv[1])
    b = int(sys.argv[2])
    hello(a, b)
# If you type : py main.py 1 5
# It should give you "hello and that's your sum:6"

Example 2: python read arguments

#!/usr/bin/python

import sys

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

Example 3: input command in python shell

x = input("Input Your Name")
#lets say I input Bob
print(x)
#It should output Bob

Example 4: 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 5: input from terminal python

text = raw_input("prompt")  # Python 2
text = input("prompt")  # Python 3

Example 6: inpuit inf terfminal ppython

userInput = input("This is a prompt for the input")

print userInput